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Transcript of File name extensions
Alphabetical list of file formats
Symbols
Ext. Description Used by### Temporary file program-dependent format#24 Printer data file for
24 pin matrix printer
LocoScript
#IB Printer data file LocoScript#nn Part of file image Long#SC Printer data file LocoScript#ST Standard mode
printer definitionsLocoScript
$$$ OS/2 archive file (i.e. archives.$$$, keys.$$$)
OS/2
$$$ Temporary file$? ZX Spectrum file in
HOBETA format$00 Pipe file DOS$DB Temporary file dBASE IV$ED Editor temporary
fileMS C
$O1 Pipe file DOS$VM Virtual manager
temporary fileWindows 3.x
)2( LHA archiver temporary file
LHA
??$ Backup file P-CAD ??_ Microsoft packed
fileExpand
?DK
Disk image Loaddskf.exe
?UT Nonpacked FTN mail (? - flavor)
FidoNet
!ut Unfinished µTorrent download
µTorrent
___ Adinf table AdinfEX_ Compressed
executable fileNote: EX could be any first two characters in a file extension (e.g. BM_ for compressed bitmap (BMP), DL_ for compressed library, etc.) Files compressed using this method have been in use on Microsoft software CDs and floppies since around 1995.
?Q? Squeeze CP/M and MS-DOS~$~ Temporary file 1st Reader
~?? Old Backup files (.MNU to .~MN)
Resource Workshop (Borland Delphi)
~H Cardfile heap AZZ Cardfileμ Metrowerks
Codewarrior projectΠ THINK C project
Numbers
Ext. Description Used by0 Compressed harddisk data DoubleSpace
0B Printer font with lineDraw extended character set PageMaker001,
002, ...Split parts of a single whole file FFSJ, HJSplit, JJSplit,
split (Unix) (when using numeric suffixes)
1 Fax Many1 Roff/nroff/troff/groff source for manual page cawf2.zip
123 Spreadsheet Lotus 1-2-3 version 9 and version 97
15U Printer font with PI font set PageMaker16 SYSLINUX Splash Screen Graphic SYSLINUX, XnView
1ST Usually README.1ST text file1TX 1toX Logipole file2GR 286 Grabber File Win301 Fax Super FAX 2000 - Fax-
Mail 96386 Intel 80386 processor driver Windows 3.x386 Windows virtual device driver Win
3DMF QuickDraw 3D Metafile QuickDraw3DS 3D Studio Graphics format 3D Studio3DT Database in which the meta-data of a 3D
Topicscape is held3D Topicscape
3DV 3-D wireframe graphics by Oscar Garcia 3dv wireframe viewer3FX Effect CorelChart3GA Mobile Phone Audio (Samsung)3GP Mobile Phone Video3GR 386 Grabber File Win3T4 Binary file converter to ASCII Util34C$ Datafile 4Cast/24MD Musical file4SW 4DOS Swap File 4DOS4TH FORTH source code file ForthCMP - LMI Forth555 16 bit per pixel image file format (5bit per
component)Sierra Entertainment
602 Text (fairly simple format, plain text with binary control commands embedded within text lines and special formatting commands on dedicated lines)
Text602 text processor by Software602
668 Music (the mixing is always at 12048 Hz)669 Music (8 channels) The 669 Composer
6CM Music (6 Channel Module) Triton FastTracker75 75×75 dpi display font Ventura Publisher7z A compressed archive file format that supports
several different data compression, encryption and pre-processing algorithms
7-Zip
8 A86 assembler source code file85 85×85 dpi display font Ventura Publisher
8BF Adobe Photoshop compatibile filters/plugins890 ScanTitling subtitle files
8CM Music (8 Channel Module) Triton FastTracker8M Printer font with Math 8 extended character set PageMaker8U Printer font with Roman 8 extended character set PageMaker83p Executable program for TI-83 Plus Graphing
CalculatorTI Connect
89p Executable program for TI-89/89 Titanium Graphing Calculator
TI Connect
8xp Executable program for TI-83/84 Plus Graphing Calculator
TI Connect
91 91×91 dpi display font Ventura Publisher96 96×96 dpi display font Ventura Publisher
A[]
Ext. Description Used byA ADA source code fileA Library Unix
A## AlZip Compressed Files' piecesA11 Graphics AIIM image fileA80 Assembler language source for 8080AA,
AB, ...Split parts of a single whole file split (Unix)
AAC Advanced Audio Coding, a standardized, lossy compression and encoding scheme for digital audio
AAF AutoPatcher fileAAF Advanced Authoring Format, an advanced
media wrapper file for professional applicationsAAS Animation Play Script AAPlayAB6 Datafile ABStatAB8 Datafile ABStatABC Alembic - 3D geometry / models Many Computer Graphics
tools, see Alembic (Computer Graphics) for a list.
ABC Document ABC FlowCharter 1.0ABP Data ABComp compressed
ABP AVS Barcode Profile AVS Barcode SourceABF Adobe Binary Screen Font Adobe Systems SoftwareABK Automatic backup file CorelDRAWABM Image PALS album fileABM Album file (various programs)ABR Adobe Brush file for PhotoShop PhotoShopABS Abstracts (info file)ABS Data file AbscissaAC Project backup Audit Command Language
(ACL)ACA Project Project Manager WorkbenchACB Archive ACBACB see ACMBACC Program (DR-DOS - ViewMax) GEM / resident
ACCDA Data Microsoft Access Database Wizard (Open XML)
ACCDB Data Microsoft Access Database (Open XML)
ACCDE Data Microsoft Access Database Wizard (Open XML)
ACCDT Data Microsoft Access Database Template (Open XML)
ACCDU Data Microsoft Access Database Wizard (Open XML)
ACE Archive ACEACF Adobe Custom Filter for PhotoShop PhotoShopACL Project Audit Command Language
(ACL)ACL AutoCorrect List Microsoft OfficeACM Audio Compression Module add-on Win
ACMB Graphics fileACO Adobe Color Palette AdobeACT ACTOR source code file ACTORACT Animations Works Actor (Graphics cell) Animation WorksACT FoxDoc Action Diagrams FoxProACT Presentation Action!AD AfterDark screensaver module AfterDarkAD2 ADPCM 2-bit compressed voice file ZFAXAD3 ADPCM 3-bit compressed voice file ZFAXADA Ada source code fileADB Ada Package BodyADC Bitmap graphics (16 colors) ScanstudioADC Dictionary LingvoADD OS/2 adapter device driverADF Amiga Disk File unADF, UAE, WinUAE etc...ADG Data ADG 3D SceneADI Graphics file AutoCAD
ADI Database Index File Advantage Database ServerADICHT LabChart data acquisition file ADInstruments
ADL MCA adapter description library QEMMADM After Dark support file AfterDarkADM ADEM file format ADEMADI Database Memo File Advantage Database ServerADN Add-in Lotus 1-2-3ADR After Dark support file AfterDarkADS Ada Package SpecificationADT WoW geographical map location file Blizzard Entertainment games
(various)ADT Datafile for cardfile application HP NewWaveADT Abrechnungsdatentransfer, an xDT application Healthcare providers in
GermanyADT Dictionary LingvoADT Fax AdTechADI Database Table Advantage Database ServerADV GUS device driver Gf166.comADX Document Archetype DesignerADZ Amiga Disk Zipped (See Amiga Disk File) GZipAEP After Effects Project File Adobe After EffectsAES File encrypted using the Advanced Encryption
Standard (AES)AES Crypt (Windows, Mac, Linux, Java) and Crypt4All (Android)
AF2 Flowchart ABC FlowCharter 2.0AF3 Flowchart ABC FlowCharter 3.0AFI Truevision bitmap graphicsAFL Font file (for Always) Lotus 1-2-3AFM Datafile for cardfile application HP NewWaveAFM Type 1 font metric ASCII data for font installer ATM - manyAFP Shape palette ABC FlowCharterAFT Template ABC FlowCharter 3.0AFW Workplace ABC FlowCharter 3.0AGR ArcView ASCII gridAHK AutoHotkey script file AutoHotkey
AI Adobe Illustrator Artwork Adobe IllustratorAIF see AIFF
AIFC Audio Interchange File Format with Compression
AIFF Audio Interchange File Format Convert (c) VillenaAiM Asm Text Mode Image File The Ultimate DrawAIN Archive AINAIN Job schedule AutoInternAIO APL programming language file transfer
format fileAIR Adobe AIR installation package The Adobe AIR runtime
environment
AIS Array of Intensity Samples graphics file XeroxAIX Datafile for cardfile application HP NewWave
AKM "Akai Multitimbral" sample information file Akai S5000 and S6000 hardware samplers (MS-DOS-based) and compatible software samplers
AKP "Akai Program" sample information file Akai S5000 and S6000 hardware samplers (MS-DOS-based) and compatible software samplers
ALC Molecular coordinates Alchemy, RasMolALG Activity Log ARCSOLOALE Avid Log Exchange (used in film & video ) AvidALL Arts & Letters symbol and font files Arts & LettersALL Filelist w/ all files FRQViewALL Format file for working pages AlwaysALL General printer information WordPerfect for WinALO Almanac support fileALT Menu file WordPerfect LibraryALZ AlZip Compressed FilesAMD Maxum chromatograph offline database Siemens Maxum
ChromatographAMF Music (Advanced Module Format) DMPAMG Archive AMGCAMG System image file ACTORAML AutomationML AutomationML GroupAMR Audio format for mobile phones (Nokia,
SonyEricsson)AMS Adobe Monitor Setup calibration file PhotoShopAMS Music formatANI Animation cursors for Win Win95 - WinNTANI Animation IconAuthor
ANM Animation Deluxe Paint AnimatorANIM Trainz Animation specification file, for
example a steam locomotive's connecting rod movements, or water movement on a river or lake motion. (Obsolescent)
Trainz/Auran JET files
ANN Help Annotations Windows 3.xAnn Multi volume ARJ archive ARJANS ANSI character graphics (animation) file ANSViewANS ASCII text ANSI character set NewWave WriteAOL America On-line for Windows DLL WinAOS Add-On Software Nokia 9000AP Archive WHAPAP Datafile Datalex EntryPoint 90
APC Printer driver Lotus 1-2-3APD Printer driver Lotus 1-2-3
APE Monkey's Audio (Lossless) audio media playersAPF Printer driver Lotus 1-2-3API Adobe Printer Ink file for PhotoShop PhotoShopAPI Passed parameter file 1st ReaderAPI Printer driver Lotus 1-2-3APK Android Application AndroidAPL APL work space format fileAPL Support module used by Manugraphics APL
productsAPL EV-Dos Application FileAPM Authorware Macintosh AuthorwareAPP Add-in application file SymphonyAPP Application object file dBASE Application GeneratorAPP Application FoxProAPP Application and Application Bundle Mac OS XAPP Executable workflow / macro file AutomatorAPP Executable application file DR-DOS - NeXTstep - AtariAPP Generated application FoxProAPR Employee performance review Employee AppraiserAPW Authorware Windows AuthorwareAPX Appexpert database file Borland C++ 4.5AQF Analyzer Queries and Filters ActixAR Argon - for 3D Modeling Ashlar-VellumAR7 Archive AR7ARC Archive ARC - PKARC/PKXARC -
PKPAS - PKUNPAK - QUARK
ARC Archive SQUASHARC Nintendo proprietary archive format Various Nintendo gamesARD Map Holux - AlanARF Automatic Response FileARH Archivers definitions file DNARI Archive ARIARJ Archive ARJ - ARJZARK ARC archive CP/M port of ARC file
archiverARK Archive QUARKARK Managing your Money Archive FileARR Arrangement Atari CubaseART Gerber artwork Cadence AllegroART First Publisher, Designworks, Greenstreet
Draw graphic fileAll GST/Greenstreet Draw products
ART Graphics (scrapbook) Art ImportART Graphics format (Another Ray Tracer) PFS:1st publisher - Art Import
ARTX file format ArtisteerARTX file format belightsoft Text ArtARX Archive ARX
ASC ASCII text fileASC Transport armor file PGPASD Autosave file Microsoft WordASD Presentation AstoundASD Screen driver Lotus 1-2-3ASD Spectral Data Set ASD Inc. RS3 spectral
acquisition programASE Velvet Studio Sample AWAVEASE ASCII Scene Export 3D StudioASF Datafile (APL Shared File) STATGRAPHICS
(APL*Plus/PC)ASF Screen font Lotus 1-2-3ASF Advanced Streaming Format (Compressed
Windows audio/video)Microsoft Corporation
ASK SYSGEN answer file RT-11ASH Assembly language header file TASM 3.0ASI ASIC language source ASICASI Assembler include file Turbo C - Borland C++
ASM Assembler language source TASM, MASM, NASM, Yasm, FASM
ASMX ASP.NET Web Service Microsoft CorporationASO Assembler object (object-oriented) file Turbo AssemblerASP ASPECT source code file Procomm PlusASP Association of Shareware Professionals
OMBUDSMN.ASP noticeASP Active Server Pages of Microsoft.Net Microsoft Corporation
ASPX ActiveX Server Pages of Microsoft.Net Microsoft CorporationASS Amalgam Scene Specification Halo 2 Map EditorASS Advanced SubStation Alpha (Subtitles)AST Adobe Color Separation table for PhotoShop PhotoShopAST Nintendo proprietary music streaming format Various Nintendo gamesASV Autosave File MATLABASW Authorware Star AuthorwareASX Advanced Stream Redirector file, redirects to
an ASF file (see ASF)Microsoft Corporation
ASZ Skin AltDeskAT2 Auto template Aldus Persuasion 2.0AT3 Atrac 3 Sound/music file All Sony devices and
programs with the Atrac 3+ specification
ATM Adobe Type Manager data/infoATN Adobe Photoshop action Adobe PhotoshopATT AT&T Group GCGW
ATTF AramOS TypeAtor Text File AramOS TypeAtor 1.0 (Development State)
ATY Produced when an association type is exported by 3D Topicscape
3D Topicscape
AU Sun/NeXT/DEC Audio file AWAVE, GoldWaveAU Sound (audio) file Sun Microsystems - Convert
(c) VillenaAUD Audio file AudioRackAUP Audacity project file AudacityAUX Auxiliary dictionary ChiWriterAUX Auxiliary references TeX/LaTeXAUZ Ableton Live File Authorization File for Ableton
LiveAVA Publication AvagioAVB AntiViral Toolkit Pro BasesAVI Audio Video Interleaved animation file Video for WindowsAVR Audio Visual Research AWAVEAVS Audio Video Software AVS Video Editor (video
software)AVT AVATAR-coding files A3EAW Text file HP AdvanceWriteAW Proprietry Nintendo wave format Various home console
Nintendo gamesAWA Animations Works Accelerated Movie Animation WorksAWD Microsoft Fax At Work Document Microsoft Fax At WorkAWK AWK script/program awk, GNU Awk, mawk, nawk,
MKS AWK, Awka (compiler)AWM Animations Works Movie (as .AVI) Animation WorksAWS Data (APL Workspace) STATGRAPHICS
(APL*Plus/PC)Ax Directshow filter file format
AXF ARM Executable Image generated by the ARM tools
AXF "lightweight geodatabase" [1] ESRI ArcPadAXM Axmedis object Axmedis ToolsAZD Amazon Software Download Amazon Software DownloadAZW DRM enabled eBook All models of Amazon KindleAZW1 DRM enabled eBook with embedded fonts All models Amazon KindleAZW2 Program file All models of Amazon Kindle
excluding Kindle 1AZZ Data file AZZ Cardfile
B[]
Ext. Description Used byB&W Black and white graphics file atari - macB&W Mono binary screen image 1st Reader
B Batch list APPLAUSEB Grand Theft Auto saved game Any of the 3D Grand Theft
Auto games in either III or IV era.
B_W Black and white graphics file Atari - macB1N Both mono and color binary screen image 1st ReaderB30 Printer font (JLaser - Cordata) Corel Ventura PublisherB3D Blitz3D files Blitz3DB8 Raw graphics file (one byte per pixel) plane
twoPicLab
BA Binary Archive Scifer Archiver and Compression [External Header Mode]
BAC Compiled BASIC RT-11 BASIC-11BAD Bad file Oracle Corporation - manyBAD Animation file NovalogicBAD File which covers bad blocks on disk volume
(not to be moved)RT-11
BAK Backup fileBAL Music score Ballade
BALANCE Balance accounting sheet file BalanceBAP Blaze Audio Wave Information File BlazeAudio MadCap SoftwareBAR Horizontal bar menu object file dBASE Application GeneratorBAR Info Bar for GFX2EXE GFX2EXEBAR Broker Archive. Compressed file containing
number of other files for deployment.[1]IBM WebSphere Message Broker
BAS BASIC language source QuickBASIC - GW-BASIC - FreeBASIC
BAT Batch file MS-DOS, RT-11BB Database backup Papyrus Design Group
BBL Bibliographic reference file TeX/BibTeXBBM Brush Deluxe PaintBBP Playlist BassBoxBBQ BitBeamer Transfer Queue file BitBeamerBBS Bulletin Board System announce or text info
fileBBS Hudson-style messagebase FTN softwareBC! Unfinished download Unfinished BitComet
download (a BitTorrent client)BCF Card data Bingo Card CreatorBCH Batch process object file dBASE Application GeneratorBCH Datafile Datalex EntryPoint 90BCO Outline font description Bitstream Inc.BCP Borland C++ makefileBCT Backup dictionary ClarionBCW Environment settings Borland C++ 4.5BDB Bookends database BookendsBDC Dictionary Lingvo
BDEF Builder Definition Websphere Portlet FactoryBDF Adobe Glyph Bitmap Distribution Format Adobe SoftwareBDF Binary update file BUPDATE.EXE (c) TNT
Techn.BDF Bitmap Distribution Format font file X11BDF Datafile EgretBDM Videoclip AVCHD
BDMV Blu-ray Video Data Content file Media players / software that supports Blu-ray structure
BDR Border Microsoft PublisherBDT Dictionary LingvoBDT Behandlungsdatentransfer, an xDT
applicationHealthcare providers in Germany
BEF Bleck Encrypted FileBEZ Outline font description BitstreamBF Brainfuck sourcefileBF2 Bradford 2 fontBFC Briefcase Win95 Win95BFM Font metrics unix/FrameBFS Binary File StorageBFX Fax BitFaxBGA Bitmap graphicsBGI Borland Graphics Interface device driver Turbo C - Turbo PascalBH Blackhole data compression formatBI BASIC include file Visual Basic - FreeBASIC
BIB Bibliography (ASCII)BIB Database - not compatible with TeX format PapyrusBIB Literature database TeX/BibTeXBIF Binary Image Format b&w graphics file Image Capture boardBIK Bink video file (RAD Video)BIN Binary file, usually zero-start (.com analog)BIN SGI PowerflipBIN Text mode memory dump The Draw - TUD - ACiDDraw
- etc.BIO BioniX Wallpaper playlist file BioniX Wallpaper ChangerBIO OS/2 BIOSBIT Bitmap X11BK! Document backup WordPerfect for WinBK Faxbook JetFaxBK? Backup fileBKC Backup catalog Backup4allBKn Timed backup file for document window n WordPerfect for WinBKP Backup file Write - TurboVidion
DialogDesignerBKW Mirror image of font set FontEditBLD BLoaDable picture BASICBLD SYSGEN Build procedure file RT-11
BLEND Blender3D Project File BlenderBLG Backup Log ARCSOLOBLK Temporary file WordPerfect for Win
BLOB Unknown Steam (software) for WinBLP Blizzard Game Picture Blizzard Entertainment games
(various)BM BitMap graphics fileBM3 UIQ3 Phone backupBMD Nintendo proprietary 3D model file Various Nintendo gamesBMK Help Bookmarks Windows 3.xBMP OS/2 or Win graphics format (BitMap
Picture)QPeg - CorelDraw - PC Paintbrush - many
BMPW bitmap world-file - geo-references infoBMS Nintendo proprietary MIDI tracker format Various Nintendo gamesBMT Ami Pro Button Ami ProBNA Data Atlas BoundaryBNK Adlib instrument bank fileBNR Graphics Banner Banner - PosterBOK Shamela Library book Shamela Library ProgramBOO Book-format READIBMBOO Compressed file ASCII archive created by
BOO (msbooasm.arc)msbooasm.arc
BOO Boo programming language source file Boo Programming LanguageBOT Bot files, these go with JKB files Quake 3 EngineBPC Chart Business Plan Toolkit
BPOLY Data Prisms binary 3D objectBPP Backup application ClarionBPT Bitmap fills file CorelDRAWBPW Bitser proprietary encrypted password file Bitser password managerBR Script Bridge
BRD Eagle Layout FileBRD Tanzzle board file TanzzleBRD Cadence Allegro board file CadenceBRF Braille Braille embossers and
refreshable displaysBRK Fax Brooktrout Fax-MailBRK The Brake! Mailer REXX script The Brake!BRL CAD Ballistic Research Laboratory
CADBS Boot sector file SYSLINUXBS2 Archive BS2.EXEBSA Archive BSArcBSC Compressed Apple II file archive created by
BINSCIIBINSCII
BSC Database Source BrowserBSC Pwbrmake object file Microsoft FortranBSP GoldSource/Source engine map files Valve CorporationBSP id Tech map files id SoftwareBSS boot sector (DOS) file SYSLINUXBSS Casio Phone base PC-LINK
BST BiblioTex file (BiblioTex=bibliography file) TeXBSY Busy flag FTN softBTM Batch-to-memory (quick batch) 4dos -ndosBTN Makeover Button fileBTX backup of 4DOS batch files (_4INST.BTM) 4DOS
BUFR Binary Universal Form for the Representation of Meteorological Data
BUG Bugs and ProblemsBUN LucasArts Bundle FileBUP Backup fileBUT Button definitions Buttons!BUY Datafile format movieBVn Overflow file below insert point in Doc n WordPerfect for WinBWB Spreadsheet application Visual BalerBWR Beware (buglist) KermitBYU BYU Movie BYUBZ2 Archive bzip2BZM Map Blitzkrieg
C[]
Ext. Description Used byC-- C—language source Sphinx C--C C language source
Note that on case-sensitive platforms like Unix and with the gcc compiler the uppercase .C extension indicates a C++ source file.
Watcom C/C++, Borland C/C++, gcc and other C compilers
C Unix file archive COMPACTC++ C++ language sourceC00 Print file Ventura PublisherC01 Typhoon wave files AWAVEC32 COMBOOT Executable (32-bit) SYSLINUXC86 C source code file Computer Innovation C86CA Initial cache data for root domain servers TelnetCA? Borland packed and split file Borland InstallerCAB Win 95 packed file Win 95CAC dBASE IV executable when caching
on/off (see cachedb.bat)CAD Drawing BobCAD-CAMCAD Document Drafix Windows CADCAL Calendar file Windows 3.xCAL Spreadsheet format SuperCalc
CALS Computer Aided Acquisition and Logistics
CALS Support Raster Format
CAM Casio CameraCAN Fax Navigator FaxCAP Caption Ventura PublisherCAP Capture file ProComm - TelixCAS C + ASM language source Turbo CCAT Catalog CP Backup - dBASE IVCAT Device driver digital signature Microsoft WindowsCAT Stellarium Star Catalogue Stellarium
CATDrawing Drawing file of CATIA V5 CATIA V5CATPart Part file of CATIA V5 CATIA V5
CATProduct Assembly file of CATIA V5 CATIA V5CATS Combined source ATSCBA Source code Creative BASICCBC Fuzzy logic system CubiCalcCBL COBOL source code fileCBM Compiled bitmap graphics XLibCBR Comic Book Reader (RAR file) CDisplay and similarCBS MasterWord button bar configuration fileCBT COMBOOT Executable (incompatible
with DOS COM files)SYSLINUX
CBT Computer Based Training manyCBZ Comic Book Reader (ZIP file) CDisplay and similarCC C++ source code fileCC CC language source CC
CCC Bitmap graphics (native format) Curtain CallCCF Communications configuration file SymphonyCCF Color Chat file Color Chat FileCCH Chart CorelChart
CCITT CCITT Group 3 and Group 4 EncodingCCL Communication Command Language file IntalkCCO BTX Graphics file XBTXCCT Print Template BobCAD-CAMCD CD description DN
CDA CD-Audio Win95CDB Card database CardScanCDB Main database TCU Turbo C UtilitiesCDF Common Data FormatCDF Company Data File Nominal Small Business
Accounting softwareCDF Computable Document Format MathematicaCDF Cyberspace Description FormatCDF Graphics netcdfCDK Document Atari CalamusCDL CADKey CADL Language CADKeyCDM Disk Drivers NPA Novell NetWareCDM Music format (compressed)CDO Music notation Crescendo Music Notation
EditorCDR Vector graphics format (drawing) CorelDraw!CDT Corel Draw Template File CorelDraw!CDX Compound index file Visual FoxPro, Advantage
Database ServerCE Computer Eyes Conversion ArtistCE Main.ce The FarSide Computer
CalendarCEB Cont. Edge Bitmap Conversion ArtistCEF CA-Clipper Workbench Application CA ClipperCEF Export FileCEF Compact Embedded Font Adobe IllustratorCEG Bitmap graphics Tempra Show - Edsun
Continuous Edge GraphicsCEL Animation CEL 3D StudioCEL Graphics Autodesk Animator -
LumenaCF Configuration file imake
CFA Audio file Adobe Premiere ProCFC ColdFusion Component Adobe ColdFusionCFG Configuration fileCFL Chart CorelFLOWCFM ColdFusion Markup Language Adobe ColdFusionCFN Font data Atari CalamusCFO C Form Object internal format object file TCU Turbo C UtilitiesCFP Fax The Complete Fax PortableCFT CFast graphics file Disney Animation StudioCGA CGA display font Ventura PublisherCGI Common Gateway Interface script
CGM Computer Graphics Metafile vector graphics
A&L - HG - many
CH Clipper language header CA ClipperCH3 Chart Harvard Graphics 3.0CH4 Presentation Charisma 4.0CHD Font descriptor FontChameleonCHI ChiWriter Document ChiWriter - ChiviewCHK Recovered data DOS CHKDSKCHK Temporary file WordPerfect for WinCHL Configuration History LogCHM Compiled Help File Microsoft Windows, Help
Explorer ViewerCHML Encrypted Data File Krasbit Technologies,
Chameleon Imaging Workflow Software
CHN Data Ethnograph 3CHP Chapter file Ventura PublisherCHR Character set Turbo C - Turbo Pascal
CHT Chart Harvard Graphics 2.0 - SoftCraft Presenter
CHT CHeaT in any program/game manyCHT Interface file for ChartMaster dBASECHZ Archive CHARCCIF Caltech Intermediate Format graphics fileCIF Chapter information Ventura PublisherCIF Crystallographic Information File RasMol, JmolCiM C Text Mode Image File The Ultimate DrawCIX Database index TCU Turbo C UtilitiesCKB Borland C++ 4.x editor keystroke
mappingBCW.EXE
CL COMMON LISP source code fileCLA Source Clarion
CLASS Java class file JavaCLD Clipper debugger configuration file CA ClipperCLJ Clojure source code ClojureCLP Clip art graphics file Quattro ProCLP Clipboard file Windows 3.xCLP Compiler response file CA ClipperCLP Graphics format PCPAINT/PictorCLPI ClipAV Clip Information file for Blu-ray Media hardware / software
with Blu-ray structure support
CLPRJ ClassicLadder project file ClassicLadderCLR Color binary screen image 1st ReaderCLR Color definitions PhotostylerCLR Color scheme Boxer/2CLR Palette file for GIS formatCLS C++ class definition fileCLW MFC Class Wizard information Microsoft VC++CM Data file CraftMan
CMB Xtree for Windows Button Bar fileCMD Command dBASE - WaffleCMD Command Prompt batch file Microsoft Windows NT
based operating systemsCMD executable programs CP/M-86 operating systemCMD External command menu 1st ReaderCMD OS/2 batch/REXX file OS/2CMF FM-music file (Creative Music File)CMK Card Card Shop PlusCMM CMM script (batch) file CEnviCMP Bitmap graphics (Lead CMP compression)CMP Compressed data PKWare Inc. data
compression libraryCMP Header file for PostScript printer files CorelDRAWCMP Photofinish Calibration Map Photofinish
CMP User dictionary Microsoft Word for DOSCMRL Concise message routing language DOTGOCMS Content Management System Any Web BrowserCMU Carnegie Mellon University FormatsCMV Animation (CorelMove CorelDraw 4.0) CorelMove CorelDraw 4.0CNC CNC general program dataCND System generation conditional file RT-11CNF Configuration (program - printer setup) program - printer setupCNF Configuration fileCNV Temporary file WordPerfect for WinCNV Winword DLL used as part of an import
operation (CNV=converter)Microsoft Word
CO Cobalt - parametric drafting and 3D modeling
Ashlar-Vellum
COB Calgari trueSpace2 File FormatCOB COBOL source code fileCOD Code definition table UUPCCOD Datafile Forecast Plus - Microsoft
Multiplan - StatPac GoldCOD file uncluding CODES for any
program/gamemany
COD Printer code definition file Boxer/2COD Program compiled code FORTRANCOD Template source file dBASE Application
GeneratorCOD Videotext fileCOE Coefficient file Xilinx ISECOF Animation Control File Diablo IICOL Color palette Autodesk Animator - manyCOL Spreadsheet Microsoft MultiplanCOM Command (memory image of executable
program)DOS
COM Indirect command file (sequence of commands to be executed)
RT-11
CON Configuration file SimdirCON MSTS Consist file MSTSCPC Compressed image Cartesian Perceptual
CompressionCPD Script Complaints DeskCPF Fax The Complete FaxCPI ColorLab Processed Image bitmapped
graphics fileCPI MS-DOS codepage file MODE.EXECPL Control panel file Windows 3.xCPL Presentation Compel
CPMZ ConPro/Miradi Zipfile Miradi and ConProCPP C++ language source Watcom C/C++
CPP Presentation CA-Cricket PresentsCPR Knowledge Access GCGWCPS backup of startup files by QEMM (?)
autoexec.cpsCPT Encrypted memo file dBASECPT Mac file archive COMPACT PROCPT Template CA-Cricket PresentsCPZ Music text file COMPOZCR2 Raw image format Canon digital camerasCRA Advanced crack file (usually text)CRD Cardfile Windows 3.x - YourWayCRD Map Holux - AlanCRD Molecular coordinates CHARMM, RasMol
CRDOWNLOAD Google Chrome download in progress Google ChromeCRF Cross-reference Microsoft MASM -
Zortech C++, RT-11 CREFCRK Crack file (usually text)CRP Encrypted database dBASE IVCRS File Conversion Resource WordPerfect 5.1CRT Terminal settings information OracleCRU Compressed file archive created by
CRUSHCS C# source file C#
CSD Compact Shared Document Dream To RealityCSG Batch file (Submit) ISIS/wCSG Graph Statistica/wCSM Borland C++ 4.x precompiled header file BCW.EXECSP PC Emcee Screen Image file Computer Support
CorporationCSS Datafile CSS - Stats+CSS Datasheet Statistica/wCSS cascading style sheetCSV Adjusted EGA/VGA palette CompuShowCSV Comma Separated Values text file format
(ASCII)CTC Control file PC InstallerCTF Character code translation file SymphonyCTK CommonTime Key file CommonTime software
applicationsCTL Control file dBASE IV - Aldus SetupCTL BATCH control file (generated by
BATCH from .BAT file)RT-11
CTT BATCH Temporary file RT-11CTX Ciphertext file Pretty Good Privacy RSA
SystemCTX Course TeXt file some Microsoft online
guides
CTX document Creativyst Table eXchangeCUF C Utilities Form definition TCU Turbo C UtilitiesCUR Windows resource (cursor image file) Resource Workshop -
WRT - Watcom Resource Editor
CUT Graphics format (bitmapped graphics) dr. HaloCV4 Color file CodeViewCVP Cover page WinFaxCVS Graphics CanvasCVT Backup file for CONVERTed database
filedBASE IV
CVW Color file CodeViewCWEB C WebCWK Datafile ClarisWorks, AppleworksCXX C++ source code file Zortech C++CYS Cytoscape session file Cytoscape
D[]
Ext. Description Used byD D Programming Language source file DMD
D3V Video file Nintendo DS (with ARME, MMCF etc.)
D4D Data Draw 4D objectD4P Data Draw 4D Pro objectD64 Commodore 64 disk imageD88 Toshiba Pasopeia D88 disk image format A series of emulators of
Japanese computersDAA Direct Access ArchiveDAE COLLADA fileDAF Data file Digital AnchorDAT Maxum chromatograph chromatogram Siemens Maxum
ChromatographDAT LDraw (Sub)Part File, 3D Model LDrawDAT Document Microsoft Word Format
(old)DAT data RSNetWorx ProjectDAT Data file in special format or ASCIIDAT Database file Clarion (programming
language)DAT Norton Utilities disc image data. It saves Boot
sector, part of FAT and root directory in image.DAT on same drive.
Norton Utilities
DAT Optical disc image (can be ISO9660, but not restricted to)
cdrdao, burnatonce
DAT Video CD MPEG streamDAT Windows registry hive (REG.DAT Windows Microsoft Windows
3.11; USER.DAT and SYSTEM.DAT Windows 95, 98, and ME; NTUSER.DAT Windows NT/2000/XP/7)
DATS Dynamic source ATSDB$ Temperature debug info Clarion Modula-2DB$ Temporary file dBASEDB Database file Paradox - XTreeGold -
dbvista - Oracle - XoftSpySE - Windows thumbnail cache [2] [3]
DB Configuration dBASE IV - dBFastDB Multi config MEDB2 Database dBASE IIDB3 Database dBASE IIIDBA Database file Turbo Prolog - DataEaseDBA DarkBasic source codeDBC DataBaseContainer Visual FoxProDBD Business data Business InsightDBD Debug info Clarion Modula-2DBF Database file dBASE III/IV - Visual
FoxPro - dBFast - DataBoss - DBVista - CA-Clipper - Visual Objects - Alaska Xbase++ -
Advantage Database Server
DBG Debugger script DOS debug - Watcom debugger
DBG Symbolic debugging information Microsoft C/C++DBK Database backup dBASE IVDBL DIBOL source fileDBM Datafile DataEaseDBM Menu template DataBossDBO Compiled program dBASE IV
DBPro DarkBasicPro ProjectDBS Data file used by Managing Your MoneyDBS Database in SQL Windows formatDBS Datafile PRODASDBS Printer description file Microsoft Word,
Microsoft WorksDBT FoxBASE+ style memo FoxPro 2.xDBT Memo file for database w/same name dBASE IV - dBFastDBW Windows file DataBossDBX DataBeam GCGWDBX AutoCAD Database AutoCADDBX Archive File Outlook Express
DC CAD drawing file DesignCAD 3000 for Windows
DC6 Image file Diablo IIDCA Document Content Architecture text file IBM DisplayWriteDCC Animation Diablo IIDCD CAD Drawing File DesignCAD 3DMax for
WindowsDCF floppy disk image Disk Copy FastDCH Schematic Drawing file DipTrace Schematic
CaptureDCI Dreamcast Save File DreamcastDCL Delphi Control Library Borland DelphiDCM DCM music module AWAVEDCP OS/2 device code page OS/2DCS Bitmap graphics (CYMK format) QuarkXPressDCS Datafile ACT! Activity FilesDCT Dictionary: used by many programs with program
dependent formatClarion
DCT Spell checking dictionary Harvard Graphics 3.0 - Symphony
DCT DataBaseContainer Extension Visual FoxProDCU Delphi unit (compiled) Borland DelphiDCW Walter Machine Programing Walter Profile EditorDCX Multi-page PCX graphics (common fax format) Intel - SpectraFAXDCX DataBaseContainer Index Visual FoxProDD Macintosh file archive DISKDOUBLER
DDA Data GLBasic ASCII 3D object
DDB Bitmap graphicsDDB Digidesign Database File Digidesign Pro ToolsDDI Disk image DiskDupeDDP Device Driver Profile file OS/2DDS DirectDraw Surface file Microsoft Flight
Simulator, other Microsoft programs
DEB DEBUG script DOS DebugDEF Assembly header file GeoworksDEF Defaults - definitionsDEF Linker definition file TLink - WLink...DEM DemonstrationDEM Digital Elevation ModelDEM Graphics file VistaProDEM Vista DEM file Meta.exe VP3DES Ascii text parameter description AWAVE
DESKLINK Windows Explorer Desktop Control (commonly "Desktop (create shortcut).DESKLINK", 0 bytes). Uses a 'special' hidden file extension
(NeverShowExt flag inside the Registry), overriding the Windows Explorer option of showing/hiding file extensions.
desktop Desktop Entry freedesktop.orgDEV Device driverDEV SYSGEN handler build procedure RT-11DEV Dev-C++ project file Dev-C++DFD Data Flow Diagram graphic file ProsaDFF RenderWare model data (e.g. Grand Theft Auto
III and later)DFI Outline font description DigifontDFL Default program settings SignatureDFM Data Flow Diagram model file ProsaDFM Delphi form module Borland DelphiDFS Delight Sound FileDFV Printing form (Word) Microsoft WordDFX Micrografx Effects DLLDGN Graphics file MicroStationDGS DiagnosticsDH Dependency information for .ph Geoworks
DHP Dr. Halo PIC Format graphics file Dr. Halo II - IIIDHT Datafile Gauss
DI D Programming Language interface file DMDDIA Diagraph graphics file Computer Support
CorporationDIB Device Independent Bitmap rarely used Windows 3.0
bitmap; Win - OS/2DIC Dictionary (e.g. from WinWord)DIF Borland patch data file Borland patchDIF Data Interchange Format VisicalcDIF OS/2 V2.2 Display Information File OS/2DIF Output from Diff command - script for Patch
commandDIF SRCCOM, BINCOM output file RT-11DIG Digilink AWAVEDIG Sound Designer 1 audio file AWAVEDIP GraphicsDIP Watcom debug info processor WatcomDebuggerDIP PCB Drawing file DipTrace PCB LayoutDIR Dialing directory file Procomm PlusDIR Directory file VAX - CPS BackupDIR Movie MacroMind Director 4.xDIR Directory listing file RT-11DIS Distribution file VAX MailDIS Thesaurus CorelDrawDIZ Description file (Description In Zip)
DJVU DJVU Document Format, a format similar to PDF DJVU
but with higher compression rates at the same quality.
DKB Raytraced graphics DKBTraceDL Animation format (Italian origin) Display - DL Viewer
DLD Lotus 1-2-3DLF Dialogue Live Format Produced by Exstream
Dialogue and by Dialogue Live Editor
DLG Dialog resource script file Microsoft Windows SDKDLG Dialog resources DNDLG Windows SDK dialog editor data fileDLG Windows SDK dialog editor data fileDLL Dynamic-link library Windows 3.x - OS/2DLL Export/import filter CorelDRAWDLM Microsoft File Transfer Manager Microsoft File Transfer
ManagerDLP Data DAQLabDLS Setup Norton DisklockDMF Music format (Delusion Digital Music File) DelusionDMF DeleD filesDMG Apple Disk Image Mac OS X (Disk Utility),DMO Demo DeriveDMP Dump file (e.g. screen or memory)DMP DUMP utility output file RT-11DMS Amiga file archive DISKMASHERDNG Digital Negative (DNG), a publicly available
archival format for the raw files generated by digital cameras
At least 30 camera models from at least 10 manufacturers, and at least 200 software products
DNT data RSNetWorx ProjectDO Java servlet file Web browser (Various)
DOC A Document, or an ASCII text file with text formatting codes in with the text; used by many word processors
Microsoft Word and others
DOCM Microsoft Word 2007 Master document Microsoft Word 2007DOCX Office Open XML Text document Microsoft WordDOF Delphi project options file Borland DelphiDOG Screen file Laughing Dog Screen
MakerDOH Dependency information for .poh GeoworksDOR Roland Digital audio file RolandDOS External command file 1st ReaderDOS Network driver (e.g. pkt_dis.dos)DOS OS/2 V3 SVGA PMI-File Svga.exeDOS renamed system files (AUTOEXEC.BAT,
COMMAND.COM, Windows 95, 98, ME (dual-boot feature)
CONFIG.SYS,DBLSPACE.BIN, DRVSPACE.BIN, IO.SYS, MSDOS.SYS) of previous MS-DOS version
DOS Text file containing DOS specific infoDOT Line-type definition file CorelDRAWDOT Microsoft Word document template Microsoft Word
DOTX Office Open XML Text document template Microsoft WordDOX Text file MultiMate 4.0DOZ Description Out of Zip VENDINFODP Calendar file Daily PlannerDP Data file DataPhile
DPR Default project- and state-related information Borland C++ - Delphi - C
DPF Bareboard PCB CAD/CAM format UcamcoDPX Digital Moving Picture ExchangeDRP Web3D File Web3DDRS Display Resource WordPerfect for WinDRV DriverDRW Designer vector graphics file Designer - MicroGraphix
DS TWAIN Data Source Any twain-source must supply one xxx.ds file
DS1 Map file Diablo IIDS4 Vector graphics Micrografx Designer 4.xDSC Celestia Deep Space Catalog file CelestiaDSC Description fileDSC Discard file OracleDSD Database DataShaperDSF Data Storage Format Golden HelixDSF Delusion Digital Sound File DelusionDSK Desktop configuration BP - DN - BC++ - TPDSK Disk Drivers Novell NetWareDSK Logical disk file RT-11DSM Digital Sound Module DSIDSN Design Object System DesignerDSP Display parameters SignatureDSP Dynamic Studio Professional Module Dynamic StudioDSP Graphics display driver Dr. HaloDSP Norton viewer DLL WinDSP Visual Studio 6 project file Microsoft Visual StudioDSR Driver Resource WordPerfect for WinDSS Screensaver file DCCDSS Digital Speech Standard (Sound) Digital SoupDSS SQL Script for .Time Framework ExaktimeDST Tajima Embroidery Format EmbroidermodderDST WAIN (Scanner spec) data source DLL WinDSV Nintendo DS battery save DeSmuME, DraSticDSW Borland C++ 4.x desktop layout file BCW.EXE
DSY DAISY container file ADAKTA.EXEDT1 Tile file Diablo IIDT2 msn-emoticon paintDT_ Data fork of a Macintosh file Mac-etteDTA Data file Turbo Pascal - PC-File -
StataDTB Database Backup for .Time Framework ExaktimeDTF Database file PFS - Q&ADTL Django template language djangoprojectDTM DigiTrekker music module AWAVEDTO data Directory Toolkit outputDTP Desk Top Publishing Document Timeworks / greenstreet
Publisher3/ Greenstreet Publisher 4.5
DTP Page Magic 2.0 publication Page Magic 2.0 upgrades to Greenstreet Publisher
DTP Publication Publish-It! upgrades to Greenstreet Publisher
DTS Torque Game Engine model formatDVC Data Lotus 1-2-3
DVDPROJ iDVD project file iDVD (Apple iLife '08)DVI DeVice Independent document TeXDVP DESQView run-file DESQViewDVP Device parameter file AutoCADDW2 Drawing DesignCAD for DOS, &
DesignCAD for Windows
DWB Coryphaeus Software Designers Workbench CSDDWC Archive DWCDWD DiamondWare Digitized file AWAVEDWG Drawing AutoCAD, IntelliCAD,
PowerCAD, Drafix, etc.DWZ DVD MovieFactory for TOSHIBA Project File,
Designer vector graphics fileDesigner - MicroGraphix or TOSHIBA
DX Text file DEC WPS/DX format - DEC WPS Plus
DXF Dialogue Exchange Format Exstream DialogueDXF Drawing Interchange File Format vector graphics AutoCAD, IntelliCAD,
PowerCAD, etc.DXN Fax Fujitsu dexNETDXP SpotFire data TIBCO SpotfireDXP ISO creation project file CD Burner XP Pro
DYLIB Dynamic Library Mac OS-XDYN Data Lotus 1-2-3
E[]
Ext. Description Used by
E E language source code EE## EnCase Evidence File chunk EnCase Forensic Analysis SuiteE00 ArcInfo interchange file GIS softwareE2D 2-dimensional vector graphics file Editor included in JFireEAS Extended file attributes OS/2EAR Enterprise archive archiveEBA Source code Emergence BASICEBJ Error-checking object file GeoworksEBQ CITE standard electronic BQ
exchange fileEC Error checking preprosessed Goc
source codeGeoworks
EC Source code Ecere SDKECC Error-checking file dvdisasterECE Escenic Contentng Engine dynamic
pageEscenic
ECMS Status document ECMergeECMT Template document / Session ECMerge
ED5 EDMICS GCGWEDA Ensoniq ASR disk image AWAVEEDE Ensoniq EPS disk image AWAVEEDF European data format Medical timeseries storage filesEDF Exchequer Document Format IRIS SoftwareEDK Ensoniq KT disk image AWAVEEDL EDL PremiereEDQ Ensoniq sq1,2/ks32 disk image AWAVEEDS Ensoniq SQ80 disk image AWAVEEDT Default settings VAX Edt editorEDT Ensoniq TS disk image AWAVEEDT External editors definitions DNEDV Ensoniq VFX-SD disk image AWAVEEEB Button bar for Equation Editor WordPerfect for WinEFA Ensoniq ASR file AWAVEEFA Encrypted File ArchiveEFE Ensoniq EPS file AWAVEEFE Ensoniq EPS instrument file AWAVEEFK Ensoniq KT file AWAVEEFQ Ensoniq SQ1/SQ2/KS32 file AWAVEEFS Ensoniq SQ80 file AWAVEEFT Ensoniq TS file AWAVEEFT High resolution screen font ChiWriterEFV Ensoniq VFX-SD file AWAVEEFX Fax Everex EFaxEGA EGA display font Ventura PublisherEKA Internal data files Borland's EurekaEL ELISP source code file Emacs lisp
ELB Synergy/DE library
ELC Compiled ELISP code Emacs lispELFO ElsterFormularELI Archive ELIELT Event list text file Prosa
EMAIL Email file. NotepadEMAKE
RE language source code (maker) E
EMD ABT Extended MoDule AWAVEEMF Microsoft Enhanced MetafileEML Stationery Template Outlook ExpressEMU Terminal emulation data BITCOMENC Encoded file - UUENCODEd file Lotus 1-2-3 - uuexe515.exeENC Music EncoreEND Arrow-head definition file CorelDRAWENFF Extended Neutral File FormatENG Dictionary engine SprintENG English documentationENG Graphics file (charting) EnerGraphicsENV Envelope or EnvironmentsENV Enveloper macro WOPRENV Environment file WordPerfect for WinEOT Embedded Open-TypeEPA Award BIOS splash screen Award BIOS, XnViewEPD Publication Express PublisherEPI Document Express PublisherEPI Encapsulated PostScript graphic fileEPS Encapsulated PostScript (Graphics
format)CorelDraw - PhotoStyler - PMView - Adobe Illustrator - Ventua Publisher
EPUB Electronic Publication - (e-Reader format)
Okular (Linux) - Apple iBooks - Sony Reader - Adobe Digital Editions - Calibre (LMW)
EQN Equation filE WordPerfect for WinERD Entity Relationship Diagram graphic
fileProsa
ERL Erlang source code fileERM Entity Relationship Diagram model
fileProsa
ERR Compiler/linker error reportESH Extended Shell batch fileETH Document Ethnograph 3ETF Encrypted Text File. Used in some
security programs.ETW Proprietary format from EnterTech
for the MagicSing/Mic Karaoke product line.
Enter-Tech
ETX Structure-enhanced text for some ascii text browsers
EUI Ensoniq EPS family CD image AWAVEEVT Events descriptionsEVY Document WordPerfect EnvoyEWD Document Express Publisher for WindowsEX3 Device driveR Harvard Graphics 3.0EXB Audio File E-MU Systems Emulator X Sampler FileEXC Exclude file for Optimize (do not
process) (QEMM)QEMM
EXC REXX source code file VM/CMSEXE Directly executable program DOSEXF Excute file OnHand PCEXM MSDOS executable, system-
manager compliant (HP calculator)HP calculator
EXP Drawing File format Drawing ExpressEXP Melco Embroidery Format EmbroidermodderEXP Protected mode EXE by PharLap
SoftwarePharLap
EXP Exports Library File VisualStudioEXS Audio File Apple Logic Pro EXS instrumentEXT Extensions descriptions fileEXX Intermediate file by MsgPut IBM LinkWayEZW easyOFFER document file[4] easyOFFER by Reagency Systems Corp.EZF Fax Calculus EZ-Fax
F[]
Ext. Description Used byF Archive FREEZEF Fortran language source code file (in fixed form) Many Fortran compilers
F01 Fax perfectfaxF03 Fortran language source code file (in free form) Many Fortran compilersF2R Farandole Linear Module FarandoleF3R Farandole Blocked Linear Module FarandoleF4 Fortran IV source code file
F4A Flash Video F4V with only audio (see also SWF) Adobe FlashF4B Flash Video F4V audio book (see also SWF) Adobe FlashF4P Flash Video F4V with digital rights management
(see also SWF)Adobe Flash
F4V A container format for Flash Video that differs from the older FLV file format (see also SWF)
Adobe Flash
F77 Fortran language source code file (in fixed form) Many Fortran compilersF90 Fortran language source code file (in free form) Many Fortran compilersF95 Fortran language source code file (in free form) Many Fortran compilersF96 Fax Frecom FAX96FAC see FACE
FACE Usenix FACE graphics file
FAL Falcon script source FalconFAM Famtasia Famicom image format FamtasiaFAQ Frequently Asked Questions text fileFAR Music format (Farandole Composer Module) FarandoleFAS Macsyma compiled programFAX Fax (raster graphics in CCITT format) most Fax programsFBM Fuzzy BitmapFBW HP Backup and Recovery Manager HP BackupFC Spell checking dictionary Harvard Graphics 2.0
FCM Binary file patch file (forward compression) jlpak10.zipFCP Final Cut Pro project file Final Cut ProFD Declaration file Microsoft FortranFD Field offsets for compiler DataFlexFD Front Door' resource files FD
FDB Font Definition Block Ming libraryFDS fwNES Famicom Disk System image fwNESFDS Headerless Famicom Disk System imageFDW Form F3 Design and MappingFDX Screenplay Final DraftFE Data Surface Evolver 3D surface
FEB Button bar for Figure Editor WordPerfect for WinFEI Fatal Error Infotable GeoworksFES File produced when a fileless occurrence in 3D
Topicscape is exported to Windows3D Topicscape
FF Intelligont FIAS formatFF Outline font description Agfa Compugraphics
FFE Front Fareast Famicom image formatFFF Fax defFaxFFI Atech FastFont (AllType)
FFIVW File Format for the Interchange of Virtual WorldsFFT Dca/FFT Final Form Text text file (DisplayWrite)FFT DCA/FFT Final Form Text text file DisplayWriteFH3 Vector graphics Aldus FreeHand 3.xFH4 Vector graphics Aldus FreeHand 3.xFI Interface file Microsoft Fortran
FIF Fractal Image Format fileFIG Figure File MATLABFIL Table Data Audit Command Language
(ACL)FIL File template Application GeneratorFIL FilelistFIL Files list object file dBASE Application
GeneratorFIL Mirror. FIL is the name given to the saved FAT by
the mirror program included in some versions of DOS and in PCTools
MS-DOS -
FIL Overlay WordPerfect
FIL File which was moved to the Virus Vault by AVGFILE A generic Windows fileFILM Filmkey film file Filmkey PlayerFIN Print-formatted text file Perfect Writer - Scribble -
MINCEFIO Aldus PhotoStyler graphics filterFIO Image PALS viewer DLLFIT File Index Table WindowsNTFIT see FITSFIT Fityk Script Fityk
FITS Flexible Image Transport System astronomy softwareFIX Patch fileFKY Macro file FoxProFLA Source material for Flash applications (see SWF) Adobe Flash
FLAC Audio codec, Audio file formatFLAME Fractal configuration file Apophysis
FLB Format library PapyrusFLC Animation format FLIC >320x200 AAPlay - Autodesk AniProFLD Folder CharismaFLI Animation format FLIC 320x200 Autodesk AnimatorFLI TeX font library EmTeX
FLM Film Roll AutoCAD/AutoShadeFLP Flstudio project file Fruity Loops (FlStudio)FLT Data/file conversion filter (or overlay) Alsud, Microsoft WordFLT Filter file Micrografx Picture
PublisherFLT MultiGen FlightFLT Support file - graphics filter Asymetrix ToolBookFLX Animation formatFLX Compiled binary DataFlexFLV A container format for Flash Video (see also SWF) Adobe FlashFM Database FileMaker ProFM1 Spreadsheet format overlay Lotus 1-2-3 release 2.xFM3 Device driver Harvard Graphics 3.0FM3 Spreadsheet Lotus 1-2-3 release 3.xFMB File Manager Button bar WordPerfect for WinFMF Font or icon file IBM LinkWayFMK Makefile Fortran PowerStationFMO Compiled format file dBASE IVFMT Format file dBASE IV - FoxPro -
Clipper 5 - dBFastFMT Gate3 format fileFMT Style sheet SprintFMV Full Motion Video fileFN3 Font file Harvard Graphics 3.0FND Files searching properties Win95FNI FileNet Native Document FileNet
FNK FunkTracker music module AWAVE, FunkTrackerFNM Fannie Mae Residential Loan Data (RLD) format
for mortgage submission to DO/DUDesktop Originator
Fnn DOS screen text font - height nn pixels fntcol13.zipFNT Font file manyFNX Inactive font ExactFO1 Font file Borland Turbo CFO2 Font file Borland Turbo CFOG Fontographer Database File Fontographer3.5FOL Folder of saved messages 1st ReaderFON Log of all calls Procomm PlusFON Terminate phonebook Terminate - Terminator -
TelixFON Windows bitmapped font file Win
FONT Font data unixFOP Freedom of the Press graphic fileFOR Form WindowBaseFOR Fortran language source file manyFOT Installed Truetype font Windows Font InstallerFOX Foxbase executable (precompiled .prg) FoxBaseFP Final Page file FoxPro for DOSFP Tiff file TIFF/IT P1FP Video file DVICO/TVIX MPEG1
video fileFP3 Database FileMaker ProFP4 Database FileMaker ProFP5 Database FileMaker ProFP7 Database FileMaker ProFPC Catalog FoxProFPD TMT Pascal compiled unit TMT PascalFPM Configuration file FoxPro for MacIntoshFPT Foxpro memo field tables FoxProFPU Configuration file FoxPro for UnixFPW Floorplan drawing FloorPLAN plus for
WindowsFPW Configuration file Visual FoxProFPX FlashPix Bitmap Image File FlashPixFR? Packed mail FTN softwareFR3 Renamed dBASE III+ form file dBASE IVFRF FontMonger Database file FontMongerFRG Uncompiled report file dBASE IVFRL GP-Forth library GP-ForthFRM Registration or other formFRM Report file dBASE IV - Clipper 5 -
dBFastFRM Visual Basic Form Visual BasicFRO Compiled report file dBASE IV
FRP Form PerForm PRO Plus - FormFlow
FRS Screen Font Resource WordPerfect for WinFRT Additional (FPT) report description file FoxProFRT GP-Forth source file GP-ForthFRX Main (DBF) report description file Visual FoxProFRX Visual Basic binary program file Visual BasicFSA Applied Biosystems Genetic Analysis data file GeneScan
FSIM Simulation File Format LoudsoftFSL Form Paradox for WindowsFSM Farandole Composer WaveSample Farandole
FSPROJ
Habanero Firestarter project Habanero Firestarter
FST Linkable program dBFastFST Temporal database file GTKWave data file
FSTICK Temporal database file Flash JoystickFSX Data Lotus 1-2-3FTD Falcon dynamic template FalconFTM Fielded Text Meta - Contains schema/Meta for a
Fielded Text fileFielded Text
FTM Font file MicrografxFTX Declared Fielded Text Fielded Text
FTXT text Cloanto text documentFTP Configuration FTP Software PC/TCPFUK Map File Postal 2FW Database FrameWorkFW2 Database Framework IIFW3 Database Framework III
FWEB Fortran WEBFX On-line guide FastLynx
FXD Phonebook FAXitFXP Foxpro executable (precompiled .prg) Visual FoxProFXS FAX Transmit Format graphics file WinFaxFYF FileLoc FyTek, Inc.
G[]
Ext. Description Used byG Data chart APPLAUSE
G16 GoldED for DOS compiled config GOLDED.EXEG3D Glest model file G3D viewerG3P data Grand Prix 3 car physics Grand
Pix 3G8 Raw graphics file (one byte per pixel)
plane threePicLab - Cubicomb Picturemaker
GAF Globa Game Engine audio format Globa Game Engine
GAM Fax GammaFaxGAMEPROJ Gamesalad game project format GameSalad
GB Game Boy ROM NintendoGB1 Game Maker backup file (can also be
GB2, GB3, etc.)GBA Game Boy Advance ROM NintendoGBC Game Boy Color ROM NintendoGBL Genesis Bitmap Layout Genesis BitmapGBL Global definitions VAXTPU editorGBL Global module in Basic programs BasicGBP Genesis Bitmap Pattern Genesis BitmapGBS GBS meta data Generic Build Support
(GBS)GBR Gerber format PCB CAD/CAMGBR GIMP brushGC Savegame Star Wars: Battlefront II
Galactic Conquest save file
GC1 Lisp source code Golden Common Lisp 1.1
GC3 Lisp source code Golden Common Lisp 1.3
GCA IBM GOCA GCGWGCD Graphics ROBLOXGCD General content descriptor Wireless devicesGCD Generic Cadd drawing Generic Cadd, Visual
CaddGCF Game cache file Steam content delivery
systemGCH GNU preprocessed C++ header file GNU C++ compilerGCI Nintendo GameCube save file Nintendo GameCubeGCX Graph file Mac OS X GrapherGD3 Game Doctor Super NES ROM imageGDF General Data Format for Biomedical
SignalsBiomedical signal processing, Brain Computer Interfaces
GDF Dictionary file GEOSGDF Geographical Data Format Various mapping
softwareGDF IBM Graphics Data Format Legacy IBM systemsGDL Data ArchiCAD modelGDS McDonnell-Douglas ThingsGDT Gerätedatentransfer, an xDT
applicationHealthcare providers in Germany
GE GEcho config file GEchoGED GEDCOM Genealogy data exchangeGED EDITOR's native file format Arts & Letters
GED GoldED for DOS compiled config file GOLDED.EXEGED Graphics editor file EnerGraphicsGED Game Editor Data / project file Game EditorGEM Vector graphics file GEM - Ventura PublisherGEN Compiled template dBASE Application
GeneratorGEN Generated text Ventura PublisherGEO Geode GeoworksGEO GEOS specific file (application) GEOSGEO GoldED for OS/2 compiled config file GED2.EXEGEX GEcho config file GEchoGFB Compressed GIF image created by
GIFBLASTgifblast.exe
GFO SGI RadiosityGFT Font NeoPaintGFT GEM-translator font fileGFX Instant Artist graphics Files Instant ArtistGFX PCBoard @X-coded colorful text GFX2COM - GFX2EXEGHO Norton Ghost File (first file) SymantecGHS Norton Ghost File (split file) SymantecGHW GHDL Wave file GHDL/GTKWave data
fileGIB Chart Graph-in-the-BoxGIB GIMP animated brushGID Help index windows 95 helpGIF Compuserves' Graphics Interchange
Format (bitmapped graphics)QPeg - Display - CompuShow
GIW Presentation Graph-in-the-Box for Windows
GKH Ensoniq Disk Image (VFX, SD, EPS, ASR, TS)
Ensoniq
GKS Graphics Kernel SystemGL Animation format grasprt.exe, PVGL Animation GRASP GRAphical
System for PresentationGLB Global module in Basic programsGLM Datafile, KernelCAD model Glim, KernelCADGLO Global module in Basic programsGLS Datafile AcrossGLY Winword Glossary Microsoft WordGM6 GameMaker Editable file as of version
6.xGame Maker
GM81 GameMaker Editable file as of version 8.1.x
Game Maker
GMD GameMaker Editable file up to version 5.x
Game Maker
GMF CGM graphics file APPLAUSE
GMK GameMaker Editable file as of version 7.x or 8.x
Game Maker
GML GameMaker GML script file Game MakerGML Geography Markup Language File Geography Markup
LanguageGMOD Data Golgotha 3D modelGMP Geomorph tile map SPXGMS Ghost Mouse ScriptGMS Gesture and Motion File FormatsGMT Gene Matrix TransposedGMT data RFactor car physicsGMX GameMaker:Studio Editable File as of
1.xGame Maker
GOC Goc source code file GeoworksGOE GOES graphic fileGOH Goc header file GeoworksGP5 Guitar Pro 5 song Guitar Pro 5GP Geode parameter file Geoworks GlueGP4 data Grand Prix 4 car physicsGPH Graph Lotus 1-2-3/GGPK Omnigo program packageGPX GPS eXchange FormatGR2 Screen driver Windows 3.xGRA Datafile SigmaPlot
GrADS MetafileGRAFFLE OmniGraffle graph file
GRASP Graphical System for PresentationGRB T-FLEX CAD file Top SystemsGRB MS-DOS Shell Monitor file MS-DOS 5GRD Drivers for GRX (graphics library) GRX (c) Free Soft.
Found.GRDNT Image format used in the core of some
very obscure customized operating systems to represent gradients; see also SCTOR
GRE data Grenoble Thermal ellipsoids Plot Program
GRF Graph file Graph Plus - CharismaGRIB Gridded BinaryGRN Drivers for GRX (graphics library) GRX (c) Free Soft.
Found.GRP Group file Windows 3.x - PapyrusGRP Pictures group PixBaseGRY Graphics format (RAW GREYz)GS Script written in Google Apps Script,
used for automating tasks across online Google products
Google Apps Script
GS1 Presentation GraphShowGS3 data GameStarterGSA data Microsoft Office Groove
Space ArchiveGSD Vector graphics Professional DrawGSM Raw GSM 6.10 audio stream AWAVEGSP Geometer's SketchpadGSW Worksheet GraphShowGTA data Microsoft Office Groove
Tool ArchiveGUP PopMailGV GrandView outline file
GVO Data GFXFX Vector ObjectGWI Groupwise File Local saved EmailGXL Graphics library GenusGXK Secure Data encryption Format GalaxkeyGZ Archive GNU zip - WinZipNT
GZR data GunZ action replay
H[]
Ext. Description Used byH! On-line help file Flambeaux Help! Display EngineH! Pertext database HELP.EXEH-- C—language header Sphinx C--H Header file (usually C language) Watcom C/C++
H++ Header file C++HA Archive HA
HAL Data file Hyper Access Lite OS/2HAM Disk Drivers NPA Novell NetWareHAM Hold And Modify Deluxe Paint image fileHAP Archive HAP3HBC Compressed Archive File (Shrink Algorithm) HyperbacHBC Compressed Archive File (Shrink Fast
Algorithm)Hyperbac
HBE Compressed, Encrypted Archive File (Shrink & AES256-bit Encryption)
Hyperbac
HBK MathCAD handbook MathCADHC Header file
HCG Document HCLabHCGS Document HCLabHDD data disk imageHDD HotDisc Designer labelHDF Amiga Hard Disk ImageHDF Help file Help Development KitHDF Hierarchical Data File graphics file SDSC Image Tools
HDL Alternate download file listing Procomm PlusHDMP heap dumpfileHDR Datafile EgretHDR Message header text Procomm Plus - 1st ReaderHDR PC-File+ Database headerHDR SPOT image fileHDS Hierarchical Data SystemHDW Vector graphics Harvard DrawHDX Help index AutoCAD - Zortech C++HDZ Amiga Zip compressed Hard Disk ImageHEP Novell Help Librarian Data File Novell NetWareHEX Hex dumpHFI HP Font Info file GEMHGL Highlight groups definitions DNHGL HP Graphics Language graphics fileHH C++ header file
HHH Precompiled header file Power CHHP Help information for remote users Procomm PlusHI Game high scores table
HIN Molecule HyperChemHIS History of executing/viewing/ DNHIS Yard Information File FYM
HKM Stores sound in a bitmapped graphics fileHLB Help library VAXHLP Help file WinHelp, Help Explorer ViewerHLX Multi help file MultiEdit 5.0HLZ Multi packed help file MultiEditHMI Music format (MIDI)
HMM Alternate Mail Read option menu Procomm PlusHMP Music format (MIDI)HMP Hump Setup File - Obsolete as of version 2.4
(See SET and SWT files)FYM
HNC CNC program files Heidenhain (?) dialogHOF Hall Of Fame (game scores)HOM CAD Software Data File PLXHOME
HP Printout file for HP printers/plotters (HP/GL)HP8 ASCII text HP Roman8 character set NewWave WriteHPF HP LaserJet fonts PageMakerHPG see HPGL
HPGL Plotter file vector graphics (Hewlett-Packard Graphics Language)
AutoCad - Harvard Graphics
HPI Font information file GEMHPJ Help project Microsoft Help Compiler for
Windows - HC.EXEHPK Archive HPACKHPM Alternate Main menu for privileged users Procomm PlusHPM EMM text HP NewWave
HPM High Performance Map Quaestor 1.xHPP C++ header file Zortech C++ - Watcom C/C++
HPPCL Hewlett-Packard Printer Control LanguageHQX Archive (ASCII Mac) BINHEXHRF Graphics file (Hitachi Raster Format)HRM Alternate Main menu for limited/normal users Procomm PlusHRZ Graphics format SSTVHS2 Monochrome image PosteringHSC 2-op FM music HSC tracker - hscplay.exeHSH Disk image hash file DriveSnapshotHIS Handmade Software Inc. graphics file almost
JPEGImage Alchemy
HST History file Procomm PlusHTM see HTML
HTML Hypertext Markup Language (WWW) Netscape - Mosaic - manyHTX Hypertext fileHUS Husqvarna Viking Embroidery Format EmbroidermodderHWA Hollywood applet HollywoodHWD Presentation Hollywood DesignerHWP Hangul Word Processor Document Hangul (word processor)HWS Hollywood script HollywoodHXM Alternate Protocol Selection menu for all
usersProcomm Plus
HXS Microsoft Help 2 compiled help file Microsoft Windows, Help Explorer Viewer
HXX C++ header fileHY1 Hyphenation algorithms Ventura PublisherHY2 Hyphenation algorithms Ventura PublisherHYC Data WordPerfectHYD Hyphenation dictionary WordPerfect for WinHYP Archive HYPER
I[]
Ext. Description Used byI Preprocessor output file Borland C PreprocessorI SWIG interface file SWIG
IAK Internet Access Kit OS/2IAM Assembly file Autodesk InventorIAX Bitmap graphics (IBM Image Access
eXecutive)IAX data InstallAnywhere.NET projectIBG PDS graphic fileIBM Archive (Internal IBM only) ARCHDOSICA Bitmap graphics (Image Object Content
Architecture)
ICB Bitmap graphicsICC ICC configurationICE Archive Cracked LHA (old LHA)
ICFE IceFormula Equation Workspace Penguin GeorgeICFM IceFormula Math Workspace Penguin GeorgeICM ICC configurationICN ICON source code fileICO Icon file ICONEDIT.EXE; Microsoft
WindowsID Disk identification file
IDB IDA database IDAIDB VC++ Minimum Rebuild Dependency File Visual C++IDC IDA C language source IDAIDE Borland C++ 4.x IDE project BCW.EXEIDF MIDI instrument descriptionIDS IDA imported names format IDAIDW Vector graphics IntelliDrawIDW Drawing file Autodesk InventorIDX Index many - FoxPro; also unrelated
Quicken file formatIFD Form JetForm DesignIFF Interchange Format File (IFF) EA Software - Convert (C)
Villena - AmigaIFF Sun TAAC Image File Format SDSC Image ToolIFP Script KnowledgeManIFS Fractal image compressed file YuvpakIFS Iterated fractal system file IFS Creation Kit, ApophysisIFS Installable file system OS/2
IGES Initial Graphics Exchange SpecificationIGF Inset Systems GCGWIGC Flight tracks downloaded from GPS devices
in the International Gliding Commission's prescribed format
IHP Watcom help file whelp.exeIHS Inbound History Bink/+IIW Power Point Image Importer WizardIL hDC Designer Icon Lin dll format
ILB Data Scream TrackerILG data LaTeX Index Generation logILK Outline of program's format Microsoft ILink incremental
linkerIM Auran Jet indexed mesh file TrainzIM8 Sun Raster graphics fileIMA Mirage vector graphics EGO - Chart - AutumnIMG ADEX graphic fileIMG Disk Image NC 5.0IMG GEM bitmapped graphics file Ventura
IMG Image for Windows/Image for DOS Disk image
TeraByte, Inc. dba TeraByte Unlimited
IMG Vivid IMG fileIMI image Magellan Meridian mapIMI image Magellan eXplorist mapIMP Spreadsheet Lotus ImprovIMQ Image presentation ImageQIN Design II for Windows INput fileIN$ Installation file HP NewWaveIN3 Input device driver Harvard Graphics 3.0INB Test script Vermont HighTestINC Include file several programming
languagesIND Data Index dBASE IV
INDD InDesign Document Adobe InDesignINF Information text file (ASCII)INF Install scriptINF OS/2 hypertext help system file VIEW.EXEINF Type 1 LaserJet font information file soft font installers
INFO GNU info reader (output from Texinfo) info (Unix)INFO Icon Data (Amiga)INGR Intergraph Raster File Format
INI Initialization fileINK Pantone reference fills file CorelDRAWINS Data WordPerfectINS Ensoniq Instrument File EnsoniqINS Installation script 1st ReaderINS Instrument music file (Adlib)INT Borland Interface UnitsINT Program saved in Internal (semi-compiled)
formatSignature
INT Source of Borland interface moduleINX Index FoxbaseIO Archive CPIO
IOB 3d graphics database in TDDD format ImagineIOC Organizational chart Instant ORGcharting!ION 4DOS descript.ion file (file descriptions) 4DOS, VC, NDN, Total
Commander, XnViewIP Immortal Player file Immortal Player
IPA Apple iOS Application iPhone, iPod touch, iPadIPC Intellitec Program Configuration - used to
configure vehicle electronicsIntellitec
IPF Interchangeable Preservation Format SoftPresIPG iPod game file iTunes and iPodIPH Hi-Res Image InterPaintIPL Pantone Spot reference palette file CorelDRAWIPN Intecplan project Intecplan Business Plan
SoftwareIPS IPS Patching Format (International Patching
System)[citation needed]Rom hacking community
IPSW iOS firmware file iPhone, iPod touch, iPad, Apple TV
IPT Part file Autodesk InventorIPT MultiColor Image InterPaint
IRRMESH static irrMesh filesIRS Resource (WordPerfect) standard.irs WordPerfectIRT Data IRIT 3D model
IRTR Graphicon-2000 Interactive Real-Time PHIGS
ISD Spelling Checker dictionary RapidFileISH Archive ISH
ISMA Output Video file Islam Abusa'a SoftwareISO ISO-9660 table see: List of ISO image
softwareIST Digitrakker Instrument File AWAVEIT Impulse Tracker music file Impulse TrackerIT Settings intalk
ITF Interface file JPI TopSpeed PascalITL iTunes music libraryITN Itinerary file TomTom PNDsITT IconTweaker ThemeIV SGI Inventor
IV-VRML Inventor VRML FormatIVE OpenSceneGraph 3D modelIVI Image file ImmerVisionIVL Lensflare file ImmerVisionIVP Panorama file ImmerVisionIVU User Interface file ImmerVisionIW Presentation flowchart IconAuthor - HSC InterActive
IWA Text file IBM Writing AssistantIWB Information WorkBench ProdeoIWD Call of Duty Map - Game Data Archive Activision, Inc.IWP Text file WangIX data dtSearch index
IZT Izl binary token file IZL
J[]
Ext. Description Used byJ2C JPEG 2000 imageJAM Jam messagebase FTN softwareJAM Jam music score JamJAR Java archive JAR, Java Games and
ApplicationsJAS see JASC
JASC Graphics format (JASC)JAV see JAVA
JAVA Java source code fileJBD Datafile SigmaScanJBIG Joint Bilevel Image GroupJBX Project file Project Scheduler 4JCN JobClock.Net Synch FileJEF Janome Embroidery Format EmbroidermodderJET Fax Hybrid JetFaxJFF see JFIFJFIF JPEG File Interchange FormatJIF see JFIFJMS Music format (JMusic file) UltraForceJNLP Java Network Launching Protocol Java Web StartJOB Gravostyle engraving pattern file Gravostyle/GravographJOB QUEUE output file RT-11JOR Journal file SQLJOU Journal backup VAX Edt editorJP2 JPEG 2000 imageJPC Graphics Japan PIC
JPEG Joint Photographic Experts Group graphics file format
QPeg - FullView - Display
JPG see JPEGJPS backup of startup files
(AUTOEXEC.BAT,CONFIG.SYS,4DOS.INI) by installation of 4DOS (JP Software)
4DOS
JRE Java Runtime Environment JavaJRN JMP journal JMPJS JavaScript file script in HTML pages
JSON JSON (JavaScript Object Notation) AjaxJSONL
DJSON-LD, a JSON-based Serialization for Linked Data
JSP JavaServer Pages Dynamic pages running Web servers using Java technology
JTF Fax Hayes JT FaxJTF Graphics (TIFF file with JPEG compression)JVX Data JavaView objectJW Text document JustWrite
JWL Library JustWriteJZZ Spreadsheet Jazz
K[]
Ext. Description Used by
K2A Data Prince of Persia 3D objectK3D Description of macro language 3DS 3DSKAP Map Info Sea ChartKAR Music format (Karaoke) ITune 1000.CorpKAR Precompiled .prg for KARAT Rus. FOX+ 2.0KB Keyboard script Borland C++ 4.5KB Program source Knowledge Pro
KBASIC Source KBasicKBD Keyboard mapping LocoScript - Signature - Procomm
PlusKBM Keyboard mapping Reflection 4.0KCL Lisp source code Kyoto Common LispKDB KeePass 1.x database file KeePass
KDBX KeePass 2.x database file KeePassKDC Kodak Digital Camera (graphics) PhotoEnhancer by PictureWorksKEP (unknown) (unknown)KEX Kedit Macro File KeditKEY Datafile Forecast ProKEY Keynote presentation file Keynote (Apple iWork '08)KEY Keyboard macrosKEY OS/2 archive .key-file (i.e. OS2.KEY) OS/2KEY Security file e.g. Shareware Registration
infoKEY Keynote iOS devices, MacintoshKFN complex music format|[1] Karafun Karaoke(R)KFX Kofax Group GCGWKIT Power Chords drum kit file Power Chord
KMC KatzReview's MegaCrammerKML Kedit Macro Library
Keyhole Markup LanguageKeditGoogle Earth
KMY data KMyMoneyKMZ Keyhole Markup Language (Zip
compressed)Google Earth
Knn Database key file ClarionKNO Personal Knowbase data file Personal KnowbaseKO linux kernel object file linux kernelKPL source code PhrogramKPP Toolpad SmartPadKPS IBM KIPS bitmap graphicsKR1 Kurzweil 2000 sample file AWAVEKR2 Kurzweil 2000 sample file AWAVEKRZ Kurzweil K2000 File KurzweilKS Source code KonsolScript DocumentKS3 Data 3D Forgastest Editor objectKSM Pfaff Embroidery Format EmbroidermodderKTU Know The Unknown Online Service
PacksUnknownsoft
KWB Knowledge WorkBench ProdeoKYB Keyboard mapping FTP Software PC/TCP
L[]
Ext. Description Used byL LEX source code fileL Linker directive file WATCOM wlinkL LISP source code file
LA0 Datafile SCUMM index fileLAB Datafile NCSS - SOLOLAB Mailing labels Q+E for Microsoft ExcelLAN Erdas image fileLAN LAN Drivers Novell NetWare
LANG Language file Minecraft, SkypeLAS Lasso File Lasso Programming Language
FileLASSO Lasso File Lasso Programming Language
FileLAY Word chart layout APPLAUSELBG Label generator data dBASE IVLBL Label dBASE IV - Clipper 5 - dBFastLBM Graphics format (Amiga) Pic-view - Deluxe PaintLBM Linear bitmap graphics XLibLBO Compiled label dBASE IVLBR .LBR Archive for CP/M and MS-DOS using the
LU programLBR Display driver Lotus 1-2-3LBT Additional (FPT) label description file FoxProLBX Main (DBF) label description file FoxProLCF Linker Control File Norton Guides compilerLCH Chart IBM Works for OS/2LCK Lockfile ParadoxLCL Data (FTP Software PC/TCP)LCL Data FTP Software PC/TCPLCN Lection WordPerfectLCS Datafile ACT! History FilesLCW Spreadsheet Lucid 3-DLD Long Distance codes file Telix
LDA Absolute binary file (load image) PDP-11, RT-11LD1 Overlay file dBASELDB Data filer database IBM Works for OS/2LDB Overlay file Microsoft AccessLDF Data filer form IBM Works for OS/2LDF Library definition file Geoworks GlueLDT Labordatenträger, an xDT application Healthcare providers in Germany
LE DOS/4GW executable image DOS/4GW PM 32X DOS Extender
LES Lesson (check *.cbt)LEV Level file NetHack 3.xLEX Dictionary Microsoft Word - LexiconLFL LucasArts resource fileLFD LucasArts resource file LucasArts gamesLFT Laser printer font ChiWriterLG Logo procedure definitions LSRHS Logo
LGO Logo for header and footer SuperFaxLGO Startup logo code Windows 3.xLHA Archive LHA/LHARCLHW Amiga archive LHWARPLIB Library file several programming languagesLIC License file used by some programs to put
their license on diskLIF ArchiveLIF CA Clipper packed file CA Clipper installerLIF Logical Interchange Format data file Hewlett-PackardLIM Archive LIMITLIN Line types AutoCADLIS Listing VAXLIT Microsoft E-book file Microsoft ReaderLIT Web3D File Web3DLIX Log file (history) Audit Command Language
(ACL)LJ Text file for HP LJ II printer
LL3 LapLink III related file (document) LapLink IIILM Auran Jet LOD mesh table (text file to
control LODs)Trainz
LMP Doom lump (data file, commonly "demo" recordings)
Doom - Doom2
LNG Language definition fileLNK Linker response file .RTLinkLNK Linker scriptLNK Windows 95 shortcut Windows 95LNK Windows XP shortcut Windows XPLOD Load fileLOG Log file Numerous systemsLOM 3D Model Lock On: Modern Air CombatLPC Printer driver TEKOLRC Lyrics dataLRF Linker response file Microsoft C/C++LRF Unencrypted BroadBand eBook file Sony Librie eBook readerLRP Report IBM Works for OS/2LRS Language Resource File WordPerfect for WinLRX Encrypted BroadBand eBook file Sony Librie eBook reader
LSA Lightscape Technologies ASCIILSB Lightscape Technologies BinaryLSP LISP source code file Xlisp, AutoLISPLSS Spreadsheet Legato - IBM Works for OS/2LSS SYSLINUX Splash Screen Graphic SYSLINUX, XnViewLST Aus. BOM Hourly weather DataLST Filelist FRQViewLST Keyboard macro 1st ReaderLST List file (archive index - compiler listfile)LST Listing (e.g. source code)LST Map list Holux - AlanLST Spool file OracleLST SLP output file RT-11LTA Data LithTech ASCII 3D objectLTM Form (Lotus Forms) LotusLUA Lua script file Microsoft Visual C++, Notepad+
+LUW label data file Labels Unlimited for WindowsLUX 2D and 3D graphics data file Foliomap and SpectramapLUZ 3D graphics data file Spectramap CUDALWD Text document LotusWorksLWO Lightwave Object FormatLWP Word processor IBM Works for OS/2, Lotus
WordproLXF Lego Exchange Format Lego Digital Designer data fileLXO Luxology scene modo3D softwareLXT Temporal database file GTKWave data fileLY LilyPond Notation File LilyPond
LYR Lyrics (ASCII)LYT Document Layout file Adminsoft AccountsLZ Archive Lzip
LZD Difference file for binaries LDiff 1.20LZH Archive LHA/LHARCLZS Archive LARCLZW Archive LHWARPLZX Amiga Archive LZX
M[]
Ext. Description Used byM Mathematica Package File MathematicaM MATLAB M-File MATLABM2 WoW Model Object file Blizzard Entertainment games
(World of Warcraft/Warcraft series)M2TS MPEG 2 Transport Stream Various media playback devices /
software
M3U M3U playlist file Winamp, XMMSM3U8 Unicode version of M3U playlist
file (UTF-8)Winamp, XMMS
M4A Advanced Audio CodingM4r iPhone ringtone iTunes and iOS devicesM7P Multilizer 2007 and 2009
localization project fileMultilizer
M8M 8MAM8 Model FileMAFF Mozilla Archive Format Mozilla Firefox (with add-on)MAI Mail VAXMAK MakefileMAK Project file VB – VC ++MAN User guide (manual)
MANAGER Accounting data file Manager – free accounting softwareMAP Color palette fileMAP Format data Micrografx Picture PublisherMAP Linker map fileMAP Map file (usually created by
compilers)MAP Map Atlas MapMakerMAP Network map AccViewMAP Game map for Duke Nukem 3DMAR Assembly program VAX MacroMAR Microsoft ARchive MSN Explorer (possibly other
Microsoft products too)MAR Mozilla ARchive Mozilla Updater (used to house
binary updates to products)MAS SmartMaster set Freelance GraphicsMAT Data MATLABMAT Microsoft Access Table Microsoft AccessMAX MAX source code fileMAX Pfaff Embroidery Format EmbroidermodderMB Memo field values for database Paradox
MBK Multiple index file backup dBASE IVMBP Metadata .mobi (Mobipocket)MBR Master Boot Record File GRUBMBX Mailbox data Eudora/ZERBERUSMCA Minecraft "Anvil" world format Minecraft 1.2 and onwardMCC Configuration file MathcadMCD MathCad file MathCadMCF Font file MathcadMCF Photo book or photo calendar
layout fileFotoInsight Designer
MCF Multimedia Container Format (predecessor of Matroska)
MCI MCI command script Media Control InterfaceMCL Multi macro library Multi
MCL Cartesian manipulator for laser systems
MCP Application script CapsuleMCP Printer driver MathcadMCR Minecraft saved world "region"
fileMinecraft (up to 1.1)
MCW Text file MacWrite IIMDL GoldSrc Model File (Quake-
Based Engine)Valve Corporation
MDL Source Engine Model File Valve CorporationMDL Quake 1 Model File id SoftwareMDL Nintendo GameCube Luigi's
Mansion ModelNintendo
MD2 Quake 2 Model File id SoftwareMD3 Quake 3 Model File id SoftwareMD5 Doom 3 and Quake 4 Model File id SoftwareMD Archive mdcd10.arc
MDA Data Microsoft AccessMDA Microsoft Access system
databaseMicrosoft Access
MDB Microsoft DataBase Microsoft AccessMDF Media Descriptor File, binary
files in which the actual disc (CD/DVD) data is stored
Alcohol 120%
MDF Master Data File, a Microsoft SQL Server file type
Microsoft SQL Server
MDF Measurement Data Format, a binary file format for vector measurement data
automotive industry, developed by Robert Bosch GmbH
MDL Model 3D Design Plus or SimulinkMDL Spreadsheet CA-Compete!MDM Modem definition file TELIX
MDMP Mini dumpfileMDR Microdrive file ZX Spectrum emulator by g.a.lunterMDS Midi Session Sound Imp.MDT Data table Microsoft ILink incremental linkerMDX Multiple index file dBASE IVMDZ Text description of music
moduleCubic Player – Cross-View
ME MultiEdit configuration MultiEditME Text file READ.ME
MEB Macro Editor bottom overflow file
WordPerfect Library
MEC MECCA source MaximusMED Macro Editor delete save WordPerfect LibraryMED Music format MED/OctaMEDMEM Macro Editor macro WordPerfect Library
MEM Memory variable save file dBASE IV – FoxPro – ClipperMEM Memos datafile ClarionMEM Mnemosyne database Mnemosyne; other spaced repetition
softwareMEQ Macro Editor print queue file WordPerfect LibraryMER Macro Editor resident area
(vakioalue)WordPerfect Library
MES Macro Editor work space file WordPerfect LibraryMES MessageMET Document Omnipage ProMET Macro Editor top overflow file WordPerfect LibraryMET OS/2 graphics metafile PICVIEW.EXEMEU Menu group DOS ShellMEX Macro Editor expound file WordPerfect LibraryMEX MEX file (executable command) MatlabMF Metafont file TeX
MFA Source code file Multimedia Fusion 2 / The Games Factory 2
MFF MIDI Cakewalk, MTPro 4MFM Music format DMPMGF Font MicrografxMGF Materials and Geometry FormatMGX Designer 4.1 Drawing Designer 4.1MHT Web Archive Single FileMIB Snmp MIB fileMID Standard MIDI file music synthetizers, WinampMIDI See MIDMIFF Magick Image File FormatMII Datafile MicroStat-II
MIME Message in MIME format (RFC822)
miniUSF Nintendo proprietary MIDI file format for the Reality Signal Processor (Nintendo 64)
Nintendo 64 games
MIO MyInfo topic Milenix MyInfoMIS Mission, used by many gamesMIT Mitsubishi Embroidery Format EmbroidermodderMIX Object file Power CMK Makefile
MKE Makefile Microsoft Windows SDKMKG MakefileMKI Graphics format (Japan MKI)MKI Japanese graphics MAKIchan
formatMagView 0.5
MKS Data TACTMKV Matroska Multimedia Container Media Player Classic, Windows
Media Player, Matroska Splitter
ML3 Project Milestones 3.xMLB Macro library file RT-11, SymphonyMLI 3DS Materials Libraries 3D Studio
MLRAW Data Moonlight Creator RAW format 3D object
MLV LabVIEW MathScriptMM Text file MultiMate Advantage II, FreeMind
mind map file (XML)MMF Mail message file Microsoft MailMMM Multimedia movie file, RIFF
RMMP formatMacroMind Director 3.x
MMO Memo writer file RapidFileMMP Output video format from
Bravado boardMN MuPAD Pro Notebook Workspace file of MuPAD
(integrated in Matlab)MND Menu source AutoCAD Menu CompilerMNG Map DeLorme Map'n'GoMNT Additional (FPT) menu
description fileFoxPro
MNT Menu memo FoxProMNT Surface metrology or image
analysis documentMountainsMap
MNU Advanced macro file HP NewWaveMNU Menu AutoCAD Menu Compiler – Norton
Commander – SignatureMNU Microsoft Mouse menu (for DOS
apps)MNX Compiled menu file AutoCADMNX Main (DBF) menu description
fileFoxPro
MNY Account book Microsoft MoneyMO? Packed mail FTN softwareMOB Device definition file PEN WindowsMOBI eBook MobipocketMOD Modula language sourceMOD MODULA-2 source code file Claridiv id="MDZ"> MDZon
Modula-2MOD Module—used by Windows for
DLL which implement DOS support
Win
MOD Music format (Amiga module) DMP – ST – MDP – VPMOL MOD4WIN PlayList Mod4WinMOL MDL Molfile RasMolMOL2 Tripos’ Sybyl MOL2 Format SYBYL, RasMolMON SYSGEN monitor build
procedureRT-11
MON Monitor description ReadMail
MOP MOPAC input file MOPAC, RasMolMOV Animation format (Mac) QuickTimeMOV Movie file AutoCAD AutoFlixMP2 Mpeg audio file Winamp, xingMP3 MPEG audio stream, layer 3 AWAVE, CoolEdit(+PlugIn),
Winamp, many othersMP4 multimedia container format,
MPEG 4 Part 14Winamp
MPA MPEG audio stream, layer 1,2,3 AWAVEMPC Calendar file Microsoft ProjectMPC Musepack audio
MPEG multimedia containter format, video, audio
MPEG Player, Winamp
MPG see MPEGMPKG Multipackage installer script Mac OS XMPL MediaRack Midi Playlist MediaRackMPM MathPlan macro WordPerfect LibraryMPP Project file Microsoft Project
MPPZ MagicPlot project file MagicPlotMPQ Mo'PaQ Archive Blizzard gamesMPR Generated executable menu file FoxProMPR Multilizer 5.x and 6.x
localization project fileMultilizer
MPR Command & Conquer: Red Alert 2 map file
Red Alert 2
MPT Bitmap graphics (Multipage TIFF)
MPV View file Microsoft ProjectMPX Compiled executable menu file FoxProMPX Video formatMPZ Miradi Project Zipfile MiradiMRB Multiple Resolution Bitmap
graphics fileMicrosoft C/C++
MRC mIRC file mIRCMRK Windows User Benchmark Win95MRS Macro Resource file WordPerfect for WinMS Microsoft antivirus report MSAV
MSC Microsoft C makefileMSC management saved console[1] Microsoft; Microsoft MMC[2]
MSD Secure and Encrypted File mysecuredelivery/DownloadMSDL Manchester Scene Description
LanguageMSDVD Windows DVD Maker Project Windows DVD Maker
MSE Set file Magic Set EditorMSG Message base (e.g. HMB)MSG Message text file (ASCII) Microsoft OutlookMSG ZVoice digitized voice file
MSI Windows Installer Package Windows Operating SystemsMSO Microsoft Word OLE Web Page
Storage StreamMicrosoft Office
MSO Microsoft Outlook metadata for a Microsoft Word 2000 email attachment[3]
Microsoft Outlook
MSP Bitmap graphics file Microsoft PaintMSP Graphics format Microsoft Paint
MSPRODUCER Media Project Microsoft Producer (for Microsoft PowerPoint XP/2003) Project
MSQM data Microsoft Message QueuingMSN Project National Instruments for NI
MultiSim-Electronic Circuit simulator
MSS Manuscript text file Perfect Writer – Scribble – MINCE – Jove
MST Document MS TestMST Minispecification file ProsaMST Setup script file Microsoft Windows SDKMSW Text file Microsoft WordMSX CP/M archive MSXMTH Math file DeriveMTL WavefrontMTM Music format MultiTrackerMTS Master Track Pro Files MTPro 4MTS data EA Sports F1 series, car physicsMTV MTV Ray Tracer graphic fileMTW Datafile MinitabMU Quattro pro for DOS Menu
definition fileQuattro Pro
MUM MATLAB CAPE-OPEN Unit Operation Model file
Matlab
MUM Microsoft update file MicrosoftMUS Finale music document FinaleMUS Music format (MIDI in Doom)MUS Sound file MusicTimeMUZ Hover Game MIDI File Windows' Hover! Game[4]
MVF Stop frame file AutoCAD AutoFlixMVI Movie command file AutoCAD AutoFlixMVO Data Mad Virgin 3D objectMVW Log file Saber LANMWF Animation ProMotionMWS MWave DSP synths instrument AWAVEMXF Material exchange format (RFC
4539, SMPTE 377M)MXL PackRat 5.0 support DLLs PackRat 5.0MXM Material Maxwell Render
MXP Adobe Extension File Adobe Dreamweaver and Adobe Flash
MXP 3ds Max Configuration File 3ds MaxMXP MasterCook exported recipeMXT Data Microsoft CMYP Presentation MM Make Your PointMZ Binary-format Map MazeEdit
MZE Text-format Map MazeEditMZG Binary-format Map Collection MazeEditMZX Binary-format Encrypted Map MazeEdit
N[]
Ext. Description Used byNAM Name Space Modules Novell NetWareNAP Naplps file (VideoShow) EnerGraphics
NAPLPS North American Presentation Layer Protocol Syntax
NB Text file Nota BeneNB Wolfram Mathematica Notebook Mathematica
NBF Nokia Backup File Nokia Mobile PhonesNC Binary Data netCDF software
packageNC Instructions for NC (Numerical Control) machine CAMSNC Non-error checking preprosessed Goc source code Geoworks
NCC CNC (Computer Numeric Control) control file CamView 3DNCD NC Drill File (Excellon Format, printed circuit
board hole definitions)Most PCB layout software
NCD Norton Change Directory support file Norton CommanderNCP Re-volt Collision file Re-voltNDB Network database Intellicom - CompexNDS Nintendo DS ROM file used for Homebrew and
commercial (Game) files on DSNintendo DS
NDL Nodelist fileNDX Index file dBASE II - III - IV -
dBFastNEO Raster graphics file Atari NeochromeNES iNES ROM image formatNET Network configuration/info fileNEU Pro/Engineer neutral file format PTC Pro/Engineer
netCDF Network Common Data FormatNEW Ameco Embroidery Format EmbroidermodderNEW New infoNFF Haines Neutral File FormatNFF WorldToolKit Neutral File FormatNFO Folioview database
NFO Help format Nextpage FolioNFO Info file Compact NFO ViewerNG Hypertext Database Norton Guide
NGO NG linker object file NGMLNGS NG compiler source file NGCNIF netimmerse/gamebyro fileNIL NIL Icon Hear-It
NITF National Imagery Transmission FormatNK2 e-mail address autocomplete archive Microsoft Office
OutlookNL Norton Desktop Icon Library
NLM Netware loadable module Novell NetwareNLS National Language Support file MS-DOSNLX Form FormWorx 3.0Nmf Node Map File Used by SpicyNodesNnn Arj archive volumes up to 999 ARJNnn Netware unicode rule table (e.g. 1250_Uni.036) Novell NetwareNnn News about smth with ext. of ver. numberNnn RAR archive volumes up to 999 RARNOT NotationNOT Yard Notes File FYMNP Project schedule (Nokia Planner) Nokia PlannerNPI Source for DGEN.EXE interpreter dBASE Application
GeneratorNPJ Nile Project Game Mission EditorNRG Nero Disc Image File Nero Express / Burning
ROMNRW Nikon Coolpix RAW image NikonNSA media Nullsoft Streaming
AudioNSF database Lotus NotesNSF Music module NES Sound FileNSS Norton screensaver module NC - NDW Screen
SaverNST Music module Amiga Noise TrackerNSV media Nullsoft Streaming
VideoNSX Compound index file SuccessWare SIX 3.00NT Startup files Windows NTNT3 BAHN Layout file JBSS BAHNNTF database design template Lotus NotesNTH Nokia Theme File Nokia PC SuiteNTR Executable ASCII text file (strip header and
rename)netrun31.zip
NTS Executable ASCII text file (strip header and rename)
netsend1.zip
NTS Tutorial Norton
NTX Database index file Clipper 5NUF Message for new users on their 1st call Procomm Plus
NUMBERS Numbers spreadsheet file Numbers (Apple iWork '08)
NV NewViews DOS accounting database QW Page NewViewsNV2 NewViews accounting database QW Page NewViewsNWS Info text file (latest news) (ASCII)NXT Sound (NeXT format)
O[]
Ext. Description Used byO$$ Outfile SprintO Object file UNIX - Atari - GCC
O01 Typhoon vOice file AWAVEOAZ Fax NetFax ManagerOB Object cut/paste file IBM LinkWay
OBD Microsoft Office Binder MSOfficeOBJ Compiled machine language codeOBJ Object code Intel Relocatable Object ModuleOBJ Wavefront Object
OBJF Data Triangle strips objectOBR Object browser data file Borland C++OBS Script ObjectScriptOBT Microsoft Office Binder Template MSOfficeOBV Visual interface ObjectScriptOBZ Microsoft Office Binder Wizard MSOfficeOCF Object Craft File Object CraftOCD OCAD Map File OCADOCR Incoming fax transcribed to text FAXGrapperOCT Musical file PctalizerOCX New Custom Control's format in VB
4.0Visual Basic
OCX OLE custom controlODB OpenDocument database OpenOffice.org BaseODF OpenDocument formula OpenOffice.org MathODG OpenDocument drawing OpenOffice.org DrawODIF Open Document Interchange FormatODL Object Description LanguageODL Type library source Visual C++ODM OpenDocument master document OpenOffice.org WriterODP OpenDocument presentation OpenOffice.org ImpressODS OpenDocument spreadsheet OpenOffice.org CalcODT OpenDocument text document OpenOffice.org WriterOFD Form definition ObjectViewOFF Object File Format vector graphics file
OFF Object File Format vector graphicsOFM PostScript font description fileOFN Microsoft Office documents Microsoft OfficeOGG Ogg multimedia container formatOHB Source On Hand BasicOHS Outbound History Bink/+OIF QuickBase file formatOKT Music (8 channels) OktalyzerOKT Music format OktalyzerOLB Object library VAXOLD Backup fileOLI Text file OlivettiOLS
RConfiguration file olsrd
OMA Audio file Labelgate CD 2, MAGIQLIP2OMG Audio file Sony compressed audio file (ATRAC3)OMF Open Media Framework Avid Media ComposerOOF Data Outrage 3D Object Format (Descent)OOG Data WEBOOGL 3D objectOOM Swap file ShroomOPJ Origin Project File Origin version 4.1 and laterOPN Active options ExactOPT Options name used by many programs for
configuration informationOPT Delphi project options Borland DelphiOPT Optimize support file QEMMOPW Organization chart Org Plus for WindowsOPX Inactive options ExactORA Parameter file OracleORC Orchestra MIDI file CSoundORG Calendar file Lotus OrganizerORG Older Origin Project Origin versions 4 or earlierOTG OpenDocument drawing template OpenOffice.org DrawOTB O ver- t he-air b itmap graphicsOTF Subtitle font information for media
contentMedia players / software which support PGS subtitling
OTH OpenDocument HTML document template
OpenOffice.org
OTL Outline font description Z-Soft Type FoundryOTL Ventura Publisher's Type Foundry
Outline Editor formatOTL The Vim Outliner A vim pluginOTP OpenDocument presentation template OpenOffice.org ImpressOTS OpenDocument spreadsheet template OpenOffice.org MathOTT OpenDocument text document template OpenOffice.org WriterOTX Text file Olivetti Olitext PlusOUT Output file
OUT Design II for Windows Output fileOV1 Overlay file (part of program to be
loaded when needed)OV2 Overlay file (part of program to be
loaded when needed)TomTom Point of Interest
OVD Datafile ObjectVisionOVL Overlay file (part of program to be
loaded when needed)OVR Overlay file (part of program to be
loaded when needed)OXT OpenOffice.org extension OpenOffice.org
P[]
Ext. Description Used byP Database PROGRESS source code PROGRESSP PASCAL source code fileP Parser source code fileP Picture file APPLAUSEP Rea-C-Time application parameter
fileReaGeniX code generator
P0? Split archive UC2 SAS.EXEP10 Tektronix Plot GCGWP10 Certificate RequestP12 Personal Information Exchange "Crypto Shell Extensions"P16 Music (16 channels) ProTracker Studio 16P22 Patch file (Patch22) Patch22P80 PLM-80 sourceP86 PLM-86 sourcep2v Backupfile of a project in
eventplanning software plan2viz (windowsbased)
P3T PlayStation 3 Theme file PS3 Theme settings menuPA1 Worktable PageAheadPAC SBStudio II Package or Song SBStudio IIPAC STAD Image (graphics ?)
PACKPACKAGE Contents The Sims 2 - Spore - The Sims 3
PAD Automatic print definitions ProduaPAD Keypad definition TelematePAF For Personal Ancestral File data
filesPAGES Pages document file Pages (Apple iWork '08)
PAK Archive PakPAL Palette file Microsoft Draw - Win. Paintbrush -
manyPAL Palette file Diablo II
PAM PAM Portable Arbitrary Map graphics format
Netpbm
PAN Printer-specific file (copy to coreldrw.ink)
CorelDRAW
PAR Parameter file FractintPAR PARTS application Digitalk PARTSPAR Permanent output file Windows 3.xPAR Parity ArchivePAR2 Parity Archive v2PART Part of a download filePAS Pascal language source Borland PascalPAT Gravis Ultrasound Patch Convert (c) VillenaPAT Hatch patterns AutoCAD - PhotostylerPAT Vector fill files CorelDRAWPAT Pattern File PhotoshopPAT GIMP patternPB Fax FAXability PlusPB Phonebook WinFax ProPB Proboard Conf. files ProboardPB Setup file PixBasePB1 Document First Publisher for WindowsPBA Powerbasic BASIC source code GenusPBD Phone book FaxNOW! - FaxitPBD Molecule (protein data bank)PBI Powerbasic include file GenusPBI Profiler Binary Input Microsoft Source ProfilerPBK Microsoft Network Phone book MSNPBL Powerbasic library Genus
PBLIB Power Library PowerBASICPBM PBM Portable Bit Map graphics
formatJasc Media C
PBM Planar bitmap graphics XLibPBO Profiler Binary Output Microsoft Source ProfilerPBT Profiler Binary Table Microsoft Source ProfilerPC Text file containing IBM PC
specific infoPC3 Custom palette Harvard Graphics 3.0PC8 ASCII text IBM8 character set NewWave WritePCA Perfect Clarity Audio Sony Vegas ProPCB P-CAD database P-CAD, PCBExpress, and other
Printed Curcuit Board design software
PCB Artwork design file (Circuit board design)
Zuken CadStar
PCC Cutout picture vector graphics PC PaintbrushPCD Graphics format (Kodak Photo-
CD)
PCD Kodak Photo-CD Image graphics file (768x512)
hpcdtoppm
PCD Pfaff Embroidery Format EmbroidermodderPCF Pixel Coordination FormatPCH Patch filePCH Precompiled header Microsoft C/C++PCJ Multimedia authoring tool graphics
fileIBM's Linkaway-Live
PCK Pickfile Turbo PascalPCL HP-PCL graphics data file HP Printer Control LanguagePCM OKI MSM6376 synth chip PCM AWAVEPCM PCM AuthorwarePCM Pfaff Embroidery Format EmbroidermodderPCQ Pfaff Embroidery Format EmbroidermodderPCS Microsoft PowerPoint picture
packageMicrosoft PowerPoint - Microsoft ClipArt Gallery
PCS PCSurvey file PCSurvey by Softart - Land Surveying Software
PCS Pfaff Embroidery Format EmbroidermodderPCT Bitmap graphics file Macintosh b&w PICT1 - color
PICT2PCW Text file PC WritePCX PC paintbrush bitmap format QPeg - Display - ZSoft - PC
PaintbrushPDA Bitmap graphicsPDB Packrat 5.0 data file Packrat 5.0PDB container format (envelope) for
Palm OS databasesPalm OS, Garnet OS, Access Linux Platform, e-book
PDB debugging data Microsoft WindowsPDB Molecule (protein data bank)PDD Adobe Photoshop Elements Image Adobe Photoshop ElementsPDE Pathology Data ExchangePDE data PowerDesk EncryptedPDF Adobe's Portable Document Format Adobe Acrobat ReaderPDF Graphics file (ED-SCAN 24bit
format)PDF Package Definition FilePDF PCAD Database Interchange
FormatPdifin.exe - Pdifout.exe
PDF Print device information NetwarePDG Print Shop Deluxe data filePDI Portable Database ImagePDL Project Description Language file Borland C++ 4.5PDM Program DeskmatePDM PowerDesigner's physical data
model (relational model) file format
PowerDesigner
PDM Visual Basic (VB) Project Information File
Visual Basic
PDN Image file Paint.NETPDS PALASM Design DescriptionPDS Pds graphicsPDS Planetary Data System FormatPDS Pldasm source code file (hardware
assembly)PDV Printer driver PaintbrushPDW Document Professional DrawPEB Program Editor bottom overflow
fileWordPerfect Library
PED Program Editor delete save WordPerfect LibraryPEM Program Editor macro WordPerfect LibraryPEQ Program Editor print queue file WordPerfect LibraryPER Program Editor resident area WordPerfect LibraryPES Program Editor work space file WordPerfect LibraryPET Program Editor top overflow file WordPerfect LibraryPet package[5] Puppy Linux
PEX Proboard EXecutable file (Executed from PB)
Proboard
PFA PostScript Font FilePFA Type 3 font file (unhinted
PostScript font)PFB Adobe Acrobat document Adobe Acrobat ReaderPFB PostScript font Adobe Type Manager (ATM)PFC (Personal File Cabinet) contains e-
mail, preferences and other personal information
AOL
PFC Text file First ChoicePFK Programmable function keys XTreeProPFM Windows Type 1 font metric filePFS Database (PFS:FILE) - text file
(PFS:Write)PFS
PFT Printer font ChiWriterPG Page cut/paste file IBM LinkWay
PGD PGP cripted diskPGI Printer Graphics File device driver PGRAPH libraryPGL HP Plotter vector graphics formatPGM Graphics format (Portable
GrayMap)JASC Media C
PGM Program SignaturePGP Support file Pretty Good Privacy RSA SystemPGS Manual page man4dosPH Optimized .goh file GeoworksPH Perl header filePH Phrase-table Microsoft C/C++
PHD PolyHedra DatabasePHM Phone book DN - LyncPHN Phone list UltraFax - QmodemProPHO Phone database Metz Phone for WindowsPHP PHP filePHP3 PHP 3 filePHP4 PHP 4 filePHF Database File Nuverb Systems Inc: DonariusPHR Phrases LocoScriptPI2 Portrait Innovations High
Resolution Encrypted Image filePortrait Innovations Studio2 (proprietary)
PIC 123 Vector graphics format CShow - Alchemy - Paint (Pictor)PIC Bitmap graphics file Macintosh b&w PICT1 - color
PICT2PIC Lotus picturePIC PIXAR picture file SDSC Image Tool
PICT Macintosh PicturePIE GlovePIE script file GlovePIEPIF OS/2 graphics metafile PICVIEW.EXEPIF Program Information File Windows 3.x, 9x, NTPIF Vector graphics GDF format file
(IBM mainframe computers)PiM Pascal Text Mode Image File The Ultimate DrawPIPE PIPE-FLO project design file PIPE-FLO ProfessionalPIT Compressed Mac file archive
created by PACKITunpackit.zoo
PIV Pivot Stick Animator file Pivot Stick AnimatorPIX Alias image file SDSC Image ToolPIX Inset PixPJ Project CA-SuperProject
PJT Additional (FPT) project description file
FoxPro
PJX Main (DBF) project description file FoxProPK PacKed bitmap font bitmap file
(TeX DVI drivers)PK Peak file Cool
PKL Pickle file(for python(programming language) I/O)
PK2 Quake 2 data file id SoftwarePK3 Quake 3 data file id SoftwarePK4 Doom 3 and Quake 4 data file id SoftwarePKA Archive PKARCPKG Installer script Next, Mac OS X, Sony PS3PKG P-CAD database P-CADPKT Fido message packet FTN softwarePL Palette Harvard GraphicsPL Perl source code file
PL Prolog source code filePL Property List font metric file TeXPL1 Room plan 3D Home ArchitectPL1 PL/I source file PL/I compilersPL2 Palette Diablo IIPL3 Chart palette Harvard Graphics 3.0PLA Playlist
PLANTUML UML Diagram (also PU) PlantUMLPLB FoxPro library FoxProPLB P-CAD library P-CADPLC Add-in file (functions - macros -
applications)Lotus 1-2-3
PLC P-CAD database P-CADPLD PhotoLine Document PhotoLine image processingPLE Encrypted Chat Log Messenger Plus! Live Plugin - Log
viewerPLI PL/I source file PL/I compilers
PLIST Mac OS Property List, also used on iOS, NeXTSTEP, and GNUstep
Apple's Property List Editor
PLL Prelinked library CA ClipperPLM DisorderTracker2 music module AWAVEPLN Spreadsheet WordPerfect for WinPLP PlaylistPLP Messenger Plus! Sound Pack Messenger Plus! Live PluginPLS Playlist file WarpVision (OS/2)
PLSC Messenger Plus! Script Pack Messenger Plus! Live PluginPLSK Messenger Plus! Skin Pack Messenger Plus! Live PluginPLT HPGL plotter file vector graphics AutoCADPLT Output file for ploterPLT P CAD: Output file editor for
PCPLOT or PCPRINTP CAD
PLT Page Magic 2.0 paper format Page Magic 2.0PLT PalettePLT Table for .pll CA ClipperPLY Data PopMailPLY Presentation screen Harvard SpotlightPLY ZipPackPLY Polygon File Format or the
Stanford Triangle Format.3D Scanners
PLY2 Data PLY2 objectPM Auran Jet progressive mesh file
(obsoleted by IM and LM)Trainz
PM Perl modulePM Bitmap graphics Presentation ManagerPM3 PageMaker 3.0 data file PageMaker 3.0PM4 Document PageMaker 4PM5 Aldus PageMaker 5.0 publication Aldus PageMaker
PMC Graphics A4TECH ScannerPMI OS/2 V3 SVGA PMI-File Svga.exePMI PhatPad note PathWare
PMM Program file Amaris BTX/2PMP PhotoMorph Project PhotoMorphPN3 Printer device driver Harvard Graphics 3.0PNG Portable Network GraphicsPNF Pre-compiled Setup Information
fileMicrosoft Windows
PNM PBM Portable aNy Map graphics file
PNT Macintosh paintingPNT Pointlist segment FTN softwarePNT QWK reader pointer file MarkMail 2.xPOF Altera FPGA programming file
(External Flash)Altera Quartus
POH Optimized .goh file GeoworksPOL InnovMetric Software Polygon
Models FormatPOLICY Group Policy File Microsoft Windows
POLY Data Patrick Flynn's Poly Format - 3D object
POP Messages index PopMailPOP Pop-up menu object dBASE Application GeneratorPOT Microsoft PowerPoint templatePOV Raytraced graphics image Persistence Of VisionPOW Power Chords instrument/song file Power Chords
PP Amiga archive POWERPACKERPPA Microsoft PowerPoint Add-inPPB Button bar for Print Preview WordPerfect for WinPPD PostScript printer description filePPJ Premiere Project PremierePPK Archive (using for many
distributives)PPK
PPL PolaroidPalettePlus ColorKey device driver
Harvard Graphics 3.0
PPM Graphics format (Portable PixelMap)
JASC Media C.
PPO Preprocessor output CA Clipper 5.*PPP Publication PagePlusPPS Storyboard Personal ProducerPPS Microsoft PowerPoint Slideshow
(stand alone slideshow)PPT Microsoft PowerPoint Presentation Microsoft PowerPoint
PPTX MS Office Open-XML Presentation
Microsoft PowerPoint
PPSX MS Office Open-XML Auto-Play Microsoft PowerPoint
PresentationPR1 Packrat 4.0 data file Packrat 4.0PR2 Packrat 4.x data file Packrat 4.xPR2 Presentation Aldus Persuasion 2.xPR2 Printer driver dBASE IVPR3 PostScript printer driver dBASE IVPR3 Presentation Aldus Persuasion 3.xPRC container format (envelope) for
Palm OS databasesPalm OS, Garnet OS, Access Linux Platform, Mobipocket
PRC "Product Representation Compact", for embedding 3D data in a PDF file
CAE and CAM applications
PRD Printer driverPRE Presentation Freelance GraphicsPRE Settings Programmer's WorkBench,
Microsoft C/C++PRE Stork graphic filePRF CheckIt Pro v1.0 data file CheckIt Pro 1.0PRF Pixel Run Format graphics file Improces - FastgraphPRF Printer driver dBASE IVPRF Profiler outputPRG Program source code (e.g. Clipper
language)CA Clipper
PRG Program source dBASE IV - FoxPro - Clipper 5 - dBFast
PRG Program AtariPRI Printer definitions LocoScriptPRJ Borland C++ IDE project file BC.EXE - BCW.EXEPRJ Mkd (Unix command) Mkd project file to extract
documentationPRK SimPark Saved File SimParkPRM ParametersPRN Printer driver SignaturePRN Text file Lotus 1-2-3 - SymphonyPRN Usually printer output filePRO Profile used by many programs to store
configuration dataPRO Graphics profile file DOSPRO Proboard conf. file ProboardPRO Punch! Home Design File Punch! Home and LandscapePRO Prolog language sourcePRO PROLOG source code filePROJ Project File (Interface Builder) NeXT
PROPERTIES Java properties file Java applicationsPROTO Message specification Google Protocol Buffers
PRR The Perfect Resume data file Perfect ResumePRS Norton Viewer DLL file
PRS Presentation Harvard Graphics WinPRS Printer Resource e.g. fonts WordPerfect for WinPRS Procedure dBASE IVPRT P-CAD component P-CADPRT Part or Drawing CadkeyPRT Printer driver Dr. HaloPRX Compiled program FoxProPS Document in PostScript format adobe
PSA Archive (Pretty Simple Archive) PSA.OUT (GNU)PSB For big Photoshop files Photoshop DocumentPSD Design II for Windows Process
Simulation DiagramPSD Periscope Debbuger Def file PeriscopePSD Photoshop bitmap file Photoshop documentPSE see PSEG
PSEG Bitmap graphics IBM printer Page SEgmentPSF Outline PostScript printer font ChiWriterPSM Music format (Protracker Studio
Module)Protracker - MASI
PSM Symbol table of IDE Turbo PascalPSM 3D Model 18 Wheels Of SteelPSN Presentation file for Sound Script WinPSP image file with layers Paint Shop Pro (all versions)PSQ Premiere Sequence PremierePST Postbox file BMailPST Archive File Microsoft OutlookPSV PlayStation 2/PlayStation 3 saved
gamePlayStation 2 and PlayStation 3
PSW File w/ passwords for any program/game
many
PT Game crack Player ToolsPT Kodak Precition Color
Management SystemPT3 Device driver Harvard Graphics 3.0PT3 Template PageMaker 3PT4 Template PageMaker 4PT5 Aldus PageMaker 5.0 publication
templateAldus PageMaker
PTB Power Tab Software Power Tab EditorPTB Script PubTech BatchWorksPTF PlayStation Portable Theme file PSP Theme settings menuPTF Pro Tools Session File Digidesign Pro ToolsPTG Panasonic Title GraphicsPTL Premiere Title PremierePTM Macro PubTech BatchWorksPTM Music formatPTM Page Magic 2.0 template Page Magic 2.0
PTN Pattern CadkeyPTN Pattern CarveWright/CompuCarve DesignerPTR OS/2 cursor image file ICONEDIT.EXEPTR QWK reader pointer file QMailPTU Performer Terrain UtilitiesPTX Pro Tools 10 session file Avid Pro ToolsPU UML Diagram (also PLANTUML) PlantUML
PUB Package File Exstream DialoguePUB Page template Microsoft PublisherPUB Public key ring file Pretty Good Privacy RSA SystemPUB Publication Ventura Publisher - 1st PublisherPUD Warcraft II Map file Warcraft IIPUT Archive PUTPUT Graphics format WScanPVD Script InstalitPVK Private Key File Microsoft AuthenticodePVL Library InstalitPVM Texture Files PVMEditPVT Local Fidonet pointlist FTN softwarePW Text file Professional Write
PWF Workflow Files Mac OS X Server Podcast ProducerPWK Workspace File PolyWorksPWL Password ListPWP Text document Professional WritePlusPX Paradox 3.0 file Paradox 3.0
PXP 3DS Process file 3D StudioPXR Pixiar Picio AltamiraComposerPXZ Compressed file to exchange media
elementsPSALMO
PY Python script file Python interpreterPYC Compiled Python module Python interpreterPYD Python DLL Python interpreterPYI Cognos Powerplay ModelPYO Optimized compiled Python
modulePython interpreter
PYW Python Script Without Console Window
Python interpreter
PZD Default settings Pizazz PlusPZI Graphics format PZPPZO Overlay file Pizazz PlusPZP Palette Pizazz PlusPZS Settings Pizazz PlusPZT Transfer file Pizazz PlusPZX Swap file Pizazz Plus
Q[]
Ext. Description Used by
Q0 Q0 graphic fileQ3S Data Quick3D SceneQAG Quick Access Group Norton DesktopQAP Application Omnis Quartz - Omnis StudioQB Tony Hawk's Pro Skater series scripting files
QBB Quickbooks Backup FileQBE Saved query (Query By Example) dBASE IV - Quattro ProQBO Compiled query dBASE IVQBW Spreadsheet QuickBooks for WindowsQCH Qt Compressed Help Trolltech Qt AssistantQCP Mp3 extension on Motorola ringtones Motorola PhonesQDF Data file Quicken data fileQDK Backup of startup files created by Optimize QEMMQDn Data file - segment n Omnis Quartz- Omnis StudioQDV Graphics file Steve Blackstock GifferQDR Configuration file Q-DirQEF Query file Q+E for Microsoft ExcelQFX Quicken-specific implementation of the OFX
specificationIntuit Quicken
QFX Fax QuickLinkQG3 Data QuickMem GreekQHC Qt Help Collection Trolltech Qt Assistant
QHCP Qt Help Collection Project Trolltech Qt AssistantQHP Qt Help Project Trolltech Qt AssistantQIF Quicken Interchange Format Intuit QuickenQIZ World book quiz World BookQLB Quick library Microsoft C/C++QLC ATM Type 1 fonts script Adobe Type ManagerQLP Printer driver QuickLinkQM4 Options or services file QMail 4.x Mail DoorQPR Generated query program FoxProQPR Print queue device driver OS/2QPX Compiled executable QBE query file FoxProQRS Equation Editor support file WordPerfect for WinQRT Graphics format (QRT ray tracing)QRY Query dBASE IVQT QuickTime movie (animation)
QTVR QuickTime VR MovieQUOX Question Object Document Quobject Designer and Quobject
ExplorerQVD QlikView Document (Data) QlikView Compressed Database
FileQVW QlikView Document (View) QlikView Presentation FileQWK QWK reader message fileQXD Document QuarkXPressQXL Element library QuarkXPress
R[]
Ext. Description Used byR Ratfor fileR Script file R
R00, R01, ...
Part of a multi-file RAR archive
R2D Reflex 2 datafile Reflex 2R3D Red Raw Video (raw video data created with a
Red camera)Red Camera
R8 Raw graphics file (one byte per pixel) plane one PicLabR8P PCL 4 bitmap font file IntellifontRA Remote Access conf. files RA
RA0, RA1, ...
Part of a multi-file RAR archive
RAD 2-op FM music Reality AdLib TrackerRAD RadianceRAL Remote Access Language file Remote AccessRAM Ramfile RealAudioRAR Archive RARRAS Graphics format SUN RasterRAT Datafile (RATS)RAW HSI raw graphic fileRAW PCM Signed Raw Sound FileRAW QRT graphic fileRAY RayshadeRB Ruby Script file
RBF Datafile RbaseRBXM ROBLOX "model" ROBLOXRBXL ROBLOX "level" ROBLOX
RC Configuration file emacsRC Resource Compiler script file Microsoft C/C++, Borland
C++RC Resource Script Resource WriterRC UUPC configuration files UUPCRC Windows resource compiler script RC.EXE -Resource
WorkShop - OS/2RCG Netscape newsgroup file (netsc.rcg)RCT Roller Coaster Tycoon
RData Data file RRDF Compiled UIC source code Geoworks UI CompilerRDI Device-independent bitmap file (RIFF RDIB
format)RDP RDP connection Remote Desktop connectionRDX Datafile ReflexREC Archivation protocol ARCSERVEREC Datafile EpiInfo
REC Record file SprintREC Windows Recorder Macro File WinRecorderRED Path info Clarion Modula-2RED REDuced nodelist file T-Mail nodelist CompilerREF Cross-referenceREG OLE Registration file Windows 3.xREG Registration information or keyREL Foreground job relocatable file RT-11REM Remarks definition SourcerREM RemarksREP QWK reader reply fileREP Report file used by many applicationsREP Report Report Designer -
CodeReporter - DataBossREQ File request FTN SoftwareRES Compiled resource Microsoft C/C++, Borland
C++RES DBASE resources dBASE IVRES Windows compiled resource package WinREV Revision file GeoworksREX PharLab executable file (old format) PharLabREX Report definition OracleREX Rexx language source file RexxREZ Resource fileRF Sun raster graphics file
RFM Report ForMat (script for customized report) Nuverb Systems Inc: Donarius
RFT DCA/RFT Revisable Format Text file IBM DisplayWrite 4.0-5.1RGB SGI RGB image file (RAW) SDSC Image ToolRGX Symbol tables etc. info ReaGeniX code generatorRH Resource header file Borland C++ 4.5RH Windows resource file header RC.EXE
RHistory Command history logfile RRI Data Lotus 1-2-3
RIB Graphics (Renderman Interface Bytestream) 3D RealityRIC Fax RicohRIF RIFF bitmap graphics (Resource Interchange
File Format)Fractal Design Painter
RIP TeleGrafix Remote Imaging Protocol Maximus 3.0RIX Graphics (ColoRIX Image File) ColoRIXRL4 Bitmap graphicsRL8 Bitmap graphicsRLA Wavefront raster image file SDSC Image ToolRLB Data hgw.rlb Harvard Graphics WinRLC Graphics 1bit/pixel scanner outputRLD Norton Commander 5.0 temp file NC 5.0RLD OSIMapDef. RecLoad Definition
RLE Utah Run Length Encoded rasterfile graphic file SDSC Image ToolRLZ REALIZER source code file CA-RealizerRM RealMedia RealPlayer
RMB data RegistryMasterRMI Windows alternate synthesized sound format RIFF RMID formatRMK Make file CA Clipper - RMAKE
RMVB RealMedia Variable Bitrate RealPlayerRN XPL program for Nota Bene users
RNA Real Native Application FileRND Rendering Slide AutoCAD AutoShadeRnn Multi volume RAR archive RARRNO Runoff file VAXROL FM music Adlib Music File RolandROM Read Only Memory image in emulators, AONs,
etc.ROO CODASYL DBMS Database Root OracleRPB Data report file used by CP Backup CP BackupRPD Database RapidFileRPF AutoCAD pattern ACADRPL Text document ReplicaRPM Red Hat Package Manager Red Hat LinuxRPT Report file used by many applicationsRRD Reduced Resolution Dataset ESRI (GIS)RS Data file Amiga Resource -
ReassemblerRS Rust language sourceRS_ Resource fork of a Macintosh file Mac-etteRSC Resource file ViewMax - manyRSL Application - Project resolver oneRSL Resource Library used by PC Tools for
WindowsPC Tools - Win
RSP Response file (text file containing input expected by e.g. LINK)
RSP Response File OS/2RST reStructuredText DocutilsRSY FLEXIT Multishot Survey Raw Data file FLEXITRTF Rich Text Format text file (help file script) many - Microsoft Word
RTFD RTF-Packet NeXTRTL HP RTL graphic fileRTL Run-Time library Norton UtilitiesRTL Text fileRTP RTPatch software update package data file Pocket soft patchRTS Realizer executable fileRTS Runtime library file CA-RealizerRUL Echo-conference rulesRUN PC Tools for Windows batch file PC Tools
RUNZ pseudo-executable file, used in Portable Apps RUNZ Framework
and software installers for Super OSRUS Russian textRV Mobile pricelist data file Mobile
RVF TRichViewRVW ReviewRV Raw Wind Data
RWS Borland Resource Workshop symbol file Resource WorkshopRWS Resource Workshop data file Borland C++RWX Criterion RenderWareRWX MEME Shape FileRWX Script RenderWareRWZ Microsoft Outlook Rules Wizard File Microsoft OutlookRXD Reflex 1 datafile Reflex 1RZK File Crypt password file All text editorsRZX File Crypt encrypted file File Crypt (Akte Krypta,
Kriptirnik)
S
Ext. Description Used byS$$ Temporary sort file SprintS ASSEMBLY source code file unixS Multi macro file source MultiS MSTS Shape file MSTS
S19 Motorola ASCII format of executables
S1K S1000 Simnet FormatS3I Digiplayer/ST3 Sample File Digiplayer - ST3
S3M Music (16 channels) Scream Tracker 3.0 - DMPS7I Seed7 library / include file Seed7 interpreter and compilerSA? Packed mail FTN softwareSAB Saber file Star Wars: Jedi Knight Jedi
AcademySAF see SAIF
SAFE SafeIT EncryptedSAIF Spatial Archive Interchange
FormatSAL Datafile SORITECSAN LucasArts' SMUSH/INSANE
animationSAM Ami Pro data file Ami ProSAM Text file Samna - Lotus Ami/Ami ProSAP Atari SAP music formatSAR Archive SARSAT ACIS
SATS Static source ATS
SAV Backup file (saved file)SAV ConfigurationSAV Executable RT-11SAV SPSS "System File" PSPPSAV Saved game state Spider Solitaire (Windows)
SAVER Screensaver Mac OS XSB Audio file (signed byte)SB Raw Signed Byte (8bit) data AWAVESB Raw Signed PCM Byte 8bit data AWAVESB Scratch project Scratch
SBD Storyboard Storyboard EditorSBH Header ScriptBasicSBI Sound Blaster Instrument file
(Creative Labs)SBK Emu SoundFont Bank (AWE32
Bank)Convert (c) Villena
SBL Stony Brook Pascal library SB PascalSBP DML program Superbase 4SBR Support file Source BrowserSBT Notes related to record Suberbase 4 WindowsSC Display driver Framework IISC PAL script ParadoxSC Script Borland ParadoxSC3 Renamed dBASE III screen mask
filedBASE IV
SC3 Screen device driver Harvard Graphics 3.0SC3 Saved City SimCity 3000SC4 Saved City SimCity 4SC4 Game Scenario RollerCoaster Tycoon
Deluxe/Expansion PackSC6 Game Scenario RollerCoaster Tycoon 2SCA Datafile SCASCC Text fileSCD SCODOL film recorder (Scan
Conversion Object Description Language)
SCODOL
SCF Standard Chromatogram Format DNA Baser AssemblerSCF Standard Chromatogram Format Staden packageSCF ? SimAnt or SimTown ??SCF Windows Explorer Command (e.g.:
show desktop.scf)Windows Explorer
SCF Multimedia show ScoreMakerSCF Spelling checker configuration file SymphonySCH Project schedule Schedule PublisherSCH Circuit Design Schematic P-CAD - Orcad - Protel
SchDoc Circuit Design Schematic Protel - Altium DesignerSCI Fax SciFax
SCI System Configuration InformationSCM Scheme source code fileSCM Schematic file (Circuit Diagram for
PCB design)Zuken CadStar
SCM StarCraft missionSCN SCeNe RTraceSCN Screen file KermitSCO High scoreSCP Script BITCOMSCR Any other screen systemSCR DEBUG source code file DOS DebugSCR Forth screen (source) file ForthSCR Screen - screen snapshot dBASE IV - Procomm PlusSCR Screen font LocoScriptSCR Screen saver Windows 3.xSCR Screen snapshopSCR Script file source TeleMate - Kermit - 1st ReaderSCT Additional (FPT) screen
description fileFoxPro
SCTOR Raster graphics format used by some very obscure custom operating systems
SCX Chart Stanford ChartSCX Graphics format ColoRIXSCX Main (DBF) screen description file FoxProSCX StarCraft: Brood War scenario StarCraft: Brood WarSCY Security file ReaGeniXSD Sound Designer I audio file AWAVESD7 Seed7 source file Seed7 interpreter and compilerSDA Fidonet's Software Distribution
Network file archive descriptionSDC Video DigimaxMaster - Samsung NV3SDC Synopsys Design Constraints Electronic Design Automation
ToolsSDF Microsoft SQL Server Compact
Edition database fileSDF Flight data microdrones GmbHSDF Source definition file SourcerSDF System Data Format file (fixed
length ASCII text)SDI Software Distribution Network
Info fileSDK Roland S-550/S-50/W-30 Disk
ImageSDL Alias Wavefront Scene Description
LanguageSDM Signed Differential Mapping brain Signed Differential Mapping
maps and/or distributionsSDML Spacial Data Modeling LanguageSDN Software Distribution Network
compressd file archivepak251.exe
SDR SmartDraw File SmartDraw ProSDS MIDI Sample DUMP Standard FileSDS Self Defining Structure provides
for N-dimensional very large datasets using HHCode
geographic information systems and relational database management systems
SDTS Spatial Data Transfer StandardSDW Ami Draw Symbol FileSDX Sample DUMP Exchange FileSEA Self-Extracting compressed
Macintosh file ArchiveSEC compressed fileSEC Diskreet encrypted file DiskreetSEC Secret key ring file Pretty Good Privacy RSA SystemSEC Secured animation file Disney Animation StudioSED Self extraction directive file IExpressSEN Scifer Archive Format (Internal
Header Mode)SEP Printer separator pageSEQ ABI Text Sequence Applied BiosystemsSEQ Atari animation fileSEQ Video Tiertex video sequenceSEQ Sequential Instruction File Bubble ChamberSES Session info Clarion Modula-2SES Multitrack Audio Session info Adobe AuditionSET Configuration file 1st ReaderSET Driver sets created by Install SymphonySET Extension used by Norton Backup
and CPS Backup for setup infoNorton Backup - CPS Backup
SET Hump Assignments File FYMSET Setup options fileSET YVD card set file YVDSF IRCAM Sound File CSound package - MixView sound
sample editorSF JAR Digital SignatureSF WPS attribute storage (OS/2
WorkPlace Shell) wp_root.sfOS/2 WorkPlace Shell
SF2 Emu SoundFont Bank v2.0 file AWAVESFB Configuration file emacsSFB HP Soft font (obsolete under
Windows)SFD SoundStage Data file AWAVESFF Standard Flowgram Format DNA Baser SFF Workbench toolSFF Scene File Format
SFI Graphics SIS FramegrabberSFI Printer font (HP LaserJet
landscape)Ventura Publisher
SFL PCL 4 bitmap font (landscape) landscape - Intellifont - Ventura Publisher
SFL Sound file Sound Forge and ACID ProSFN Font SPXSFO Bitstream font file - fontware
formatSFP PCL 4 bitmap font portrait - Intellifont - Ventura
PublisherSFR Sonic Foundry Sample Resource AWAVESFS PCL 5 scalable font file IntellifontSFT Screen font ChiWriterSFX Renamed dBASE III screen mask
filedBASE IV
FX SFX (self-extracting archives) script
RAR
SG1 Graphics Stanford GraphicsSGF Document with graphics StarwriterSGF Smart Game Format Many board gamesSGI Graphics file IRIS - Silicon GraphicsSGP Statistics STATGRAPHICS PlusSGT Save/get keyboard macro SignatureSH ASCII archive SHARSH Unix shell script Unix shell interpreterSH3 Presentation Harvard Graphics 3.0
SH3D Sweet home 3d file Sweet home 3dSHAR Archive UNSHAR (Unix)SHB Background CorelShowSHG Segmented Hyper Graphics Microsoft's shed.exe, JGsoft's
Hotspot Builder, EC Software's Help and Manual
SHK Apple II archive SHRINKITSHM Shell macro WordPerfect LibrarySHP Shape file and sdiv id="PYI">
PYIource file for text fonts
ESRI shapefile
AutoCAD
ArcGIS
SHR see SHARSHT HTML format for WWW NetScapeSHW Presentation Harvard Graphics 2.0 - CorelShowSHW Slide show WordPerfect PresentationsSHX Shape entities
ESRI shapefile
AutoCAD
ArcGISSIB Sibelius file Sibelius 1-5
SID Sound Interface Device file format SIDplayer, SIDplay, sidplay2 /wSIF Setup Installation Files info Windows NT SetupSIG Current program settings SignatureSIG Signature file ThunderByte AntiVirus - PopMailSIK Backup file (Sicherungskopie) Microsoft WordSIM Simon document file - Simon
instruction software editorSIS symbian fileSIT Archive (Macintosh) STUFFITSKP Google SketchUp fileSKY SYLK Spreadsheet file (used by
Multiplan)SL S-Lang source code file
SLB P-CAD library (symbols) P-CADSLB Slide library AutoCADSLC SALT (script from Telix) compiled
codeTelix
SLD Slide AutoCADSLDPRT Part SolidWorksSLDASM Assembly SolidWorksSLDDRW Drawing SolidWorks
SLI Slide MAGICorp Slide ServiceSLK Microsoft Excel import format Microsoft ExcelSLK SYLK Symbolic Link format data
fileMultiPlan
SLL Sound data fileSLL Static Link Library PowerBASICSLN Microsoft Visual Studio Solution Microsoft Visual StudioSLP SLP command file created by
SRCCOMRT-11
SLP Localization project file SisulizerSLT SALT Script Application Language
for Telix script sourceTelix
SLV Solution for any game manySM Maillist SoftSpoken MailerSM Script ScriptMakerSM SMALLTALK source code fileSM Text file Samna WordSM StepMania Step File StepMania
SMC Super MagiCom SNES ROM image
Super MagiCom
SMCLVL Secret Maryo Chronicles Level Secret Maryo ChroniclesSMF Fax SMARTFAXSMF 3D World Studio mesh filesSMK Smacker Video Format (RAD
Video)SML System Macro Library RT-11
SMM Ami Pro Macro File Ami ProSMN Font (ParaGraph's WorkScript
format)SMP Sample (sound file)SMP Samplevision File Samplevision
SMPL Data Megahedron 3D objectSMS MSTS Sound management system
fileMSTS
SMT Text file Smart Ware IISN Compressed song file Sound Club editor
SND Digitized sound file Macintosh/ATARI/PCSND Power Chords drum sound file Power Chord
SNDB SQLNotes database SQLNotesSNG Song (midi sound) Midisoft Studio - PrismSNG Saved game file for StarCraft StarCraftSNO SNOBOL4 source code fileSNP Book-shelf for .BOO READIBMSNP Microsoft Access report snapshotSNP Output video format from
Computer Eyes equipmentSNX Saved game file for StarCraft:
Brood WarStarCraft: Brood War
SO shared object, dynamically linked library
Unix, Linux
SOAR Soar Production fileSOF Altera FPGA programming file
(internal RAM)Altera Quartus
SOL Solution e.g. game walkthroughsSOL Adobe Flash shared object ("Flash
cookie") (Movie, film, video and multimedia file type)
Adobe Flash
SOM Network serial numbers Quattro ProSOM Sort information ParadoxSON Song SBStudio IISOU Temporary BATCH file RT-11SOU SBStudio II Sound File SBStudio IISOU Sound data (sound tool)SP Archive (unix) SPLINT
SPC Program Microsoft MultiplanSPC Temporary file WordPerfect for WinSPC SNES SPC-700 Sound File SNES gamesSPC Spectroscopic data (scientific) Thermo ScientificSPD Scalable font Speedo - Harvard Graphics 3.0SPF Slide presentation file EnerGraphicsSPF data SQR Portable FormatSPG Glossary SprintSPI Graphics (Siemens and Philips
scanner)SPIFF Still Picture Interchange File
FormatSPIN Spin source file Parallax Propeller MicrocontrollersSPL Archive SPLINTSPL Customized printer driver SprintSPL Divided file segment SliceSPL Personal spell dictionary SignatureSPL Print spooling file Windows 3.xSPL SampleSPM Data wp{wp}.spm WordPerfectSPP Printer file SprintSPR Document letter SprintSPR Generated executable screen file FoxProSPR SpriteSPR Story Board spritesSPS Exported SyncBack profile SyncBackSPS Screen driver SprintSPS SPSSx source code file VAX/VMSSPT Data support file (MITAC
disk/system management utility pack)
MITAC disk/system management utility pack
SPT SPITBOL source code fileSPW Worksheet SigmaPlotSPX Compiled executable screen file FoxProSPX Ogg Speex bitstream[1] Xiph.Org FoundationSQD Squish message base SquishSQI Squish message base index SquishSQL SQL language code Any SQL databaseSQL Squish message base lastread
pointersSquish
SQM Windows Live Messenger log fileSQN Note file SquareNoteSQZ Archive SQUEEZESQZ FOXPRO Squeeze file FOXPROSRC Source code Aurora CompilerSRC Multi- source Multi-SRC Source DataFlexSRF Sun Raster File graphics fileSRP Script QuickLinkSRT Subtitle format SubRipSS Bitmap graphics SplashSS Screen saver DN
SSC Celestia Solar System Catalog file CelestiaSSD Datafile SAS/PCSSF Graphic file SnagIt Studio File/PCSSG Saved game Simsig
SSIF Stereoscopic Interleaved file Media playback devices / software that supports Blu-ray 3D
SSP Datafile SAS TransportSSR FLEXIT Singleshot Survey Raw
Data fileFLEXIT
SST AVHRR graphic fileSSV Spreadsheet viewer fileST Instrument library Scream TrackerST SMALLTALK source code file Little SmalltalkST Stamp NeoPaint
STA Data file StatisticaSTA Saved state Reflection 4.0STA Stack Spinmaker PlusSTB Symbol table file RT-11STB Stub library Genus GX KernelSTC Celestia Star Catalog file CelestiaSTC OpenOffice.org XML spreadsheet
templateOpenOffice.org Calc
STD State Transition Diagram graphic file
Prosa
STD OpenOffice.org XML drawing template
OpenOffice.org Draw
STEAMSTART
STEAMSTART file Steam (software)
STF Archive SHRINKTOFITSTF Setup Table FileSTI OpenOffice.org XML presentation
templateOpenOffice.org Impress
STK eBook StarebookSTL Stereolithography Interface FormatSTL Subtitle files EBU-standardSTM Music format (4 channels) (Scream
Tracker Module)ST - DMP
STM State Transition Diagram model file
Prosa
STO Pascal stub OBJ file Genus GX KernelSTP Subtitler Project Belle Nuit SubtitlerSTR Gate3 table structure fileSTR Structure list object file dBASE Application GeneratorSTR PlayStation video fileSTS Music format (Scream Tracker
Song)ST 2.0-2.3
STS Project status info Microsoft C/C++STU Studio Project Pinnacle Studio (video software)
STUFF EVE Online compressed file archive
CCP hf
STW Data file SmartTerm for Windows
STW OpenOffice.org XML text document template
OpenOffice.org Writer
STX Electronic book SmarTextSTX Music formatSTX Tax form CA-Simply TaxSTY Ami Pro Template (Style); used by
other programs for `styles`Ami Pro
STY Style library or sheet manySU? Packed mail FTN softwareSUB Subtitle format SubViewer; Author David DolinskiSUF Sony camera configuration file
(setup.suf)XDCAM-EX camcorders
SUI SUIT library Simple User Interface ToolkitSUM SummarySUN Sun rasterfile graphics file Sun MicrosystemsSUO Solution User Options Microsoft Visual StudioSUP Subtitle file (Blu-ray encapsulated
container)SupRip
SUP Supplementary dictionary WordPerfect for WinSUR Surface topography (in native
"SURF" format)MountainsMap
SV6 Saved Game File RollerCoaster Tycoon 2SVC Represents the ServiceHost
instance hosted by Internet Information Services
Windows Communication Foundation
SVD Autosave file for document Microsoft WordSVG Autosave file for glossary Microsoft WordSVG Scalable Vector Graphics manySVQ MRC-Pro sequencers music format Roland Corporation synths such as
XP or Fantom seriesSVS Autosave file for style sheet Microsoft WordSVW Super Video Windows Conversion ArtistSVX Interchange, 8SVX/16SV AWAVESVY FLEXIT Survey data FLEXITSW Raw Signed Word (16bit) data AWAVE
SWF Shockwave Flash MacromediaSWG SWIG source code SWIGSWG SWAG Pascal Snippets file SWAGSWP Document backup SprintSWP Swap fileSWT Hump Routes File FYMSXC OpenOffice.org XML spreadsheet OpenOffice.org CalcSXD OpenOffice.org XML drawing OpenOffice.org DrawSXG OpenOffice.org XML master
documentSXI OpenOffice.org XML presentation OpenOffice.org Impress
SXM OpenOffice.org XML formula OpenOffice.org Calc
SXP 3DS Process file 3D StudioSXW OpenOffice.org XML text
documentOpenOffice.org Writer
SY1 SmartPix symbol library Ami ProSY3 Harvard Graphics formatSY3 Symbol file Harvard Graphics 3.0SYD Backup of startup files created by
QEMM (?) autoexec.sydSYD Sysedit backup file SyseditSYG Monitor and handler files created
by SYSGENRT-11
SYM Compiler symbolic information fileSYM P-CAD component (symbols) P-CADSYM Precompiled headers Borland C++SYM Program symbol table Power C, Microsoft ILink
incremental linkerSYM Symbol file Harvard Graphics 2.0, Microsoft
Windows SDKSYN SDSC Synu image file SDSC Image ToolSYN Synonym file Microsoft Word 5SYS Datafile SYGRAPH - SYSTAT - SPSS/PCSYS System file - device driver or
hardware configuration infoDOS
SYW Graphics file (symbol) Harvard Graphics WinSYW Yamaha SY-85/SY-99 Wave File Convert (c) Villena
SZPROJ SZInstallSystem Project SoftwareZator 2011 Standart Edition
T[]
Ext. Description Used byT Archive without compression
(tape)tar
T TADS sourceT Tester symbol table ReaGeniX code generator
T?H Turbo Help file (Pascal, C, Assembler, ...)
Borland Thelp
T$M AVG scan log files[2] AVGT2B Bookeen Cybook thumbnail Cybook
t2flow Taverna 2 workflow definition
Taverna workbench
T2L True2Life file format 3D Internet content developersT44 Temporary file for Sort or
IndexdBASE IV
T64 Program C64S emulatorTAG Query tag name DataFlexTAH Help file for Turbo Borland C++
AssemblerTAL Adobe Type Align AdobeTAL Text illustration TypeAlignTAP Tape file ZX Spectrum emulator by g.a.lunterTAR Archive TARTAZ Archive WinZipNT - TAR - COMPRESSTB Tab file (Virtual Desktop
Tab)Tabbery
TB1 Font file Borland Turbo CTB2 Font file Borland Turbo CTBF Fax Imavox TurboFaxTBK FOXPRO template backup
fileFOXPRO
TBK Memo backup dBASE IV - FoxProTBK Toolbook Asymetrix ToolBookTBL Short for Table used by many programsTBL Aldus TableEditor file TableEditorTBL Gate3 table fileTBL Graphics file (native format) PageMaker TableEditorTBL Table of values OS/2TBR Norton Desktop custom
toolbarNDW
TBS Text elements ?? (Textbausteine)
Microsoft Word
TBX Table Project Scheduler 4 - TermBase eXchange (ISO 30042)
TBZ Archive WinZipNT - TAR - Bzip2TC Configuration Turbo C - Borland C++
TCH Help file Turbo C - Borland C++TCL Tool Command Language
source codeSwat
TCT Drawing Template TurboCAD for WindowsTCW Native Drawing File TurboCAD for WindowsTD Config from Turbo Debugger Turbo DebuggerTD0 Compressed disk image file TelediskTD1 Multi-part disk image file TelediskTD2 Configuration file Turbo Debugger for Win32TDB Database TACT
TDDD Imagine Object File Format ImagineTDF Speedo font fileTDF Typeface definition file SpeedoTDH Help file for Turbo Debugger Borland C++TDK Keystroke recording file Turbo DebuggerTDR Contens of Arvid tapeTDS Symbol table Turbo DebuggerTDT Thumbnail data AVCHDTDW Configuration file Turbo Debugger for Windows
TEC Data TECPLOT outputTEC TECO macro file ("compiled"
form)TECO
TEF Fax Relisys TEFAXTEL Host file TelnetTEM Input template IconAuthorTEM Turbo Editor Macro
Language scriptBorland C++
TERM Terminal FileTES TECO macro file (source
form)TECO
TET Tetris results DNTEX Datasheet IdealistTEX TeX text file Scientific Word - TeXTEX Image Slimtex
TEXT Text fileTF Configuration Turbo Profiler
TFA Area file Turbo ProfilerTFC Catalogue file Tobi's Floppy CataloguerTFF self executing TansForm
dialogueTansForm
TFH Help file for Turbo Profiler Borland C++TFM Tagged font metric file IntellifontTFM TeX Font Metric file TeXTFS Statistical information Turbo ProfilerTG1 Project file On TargetTGA Targa True Color bitmapped
formatPaint.NET
TGZ Archive WinZipNT - TAR - GNUzipTH? Packed mail FTN softwareTHE Windows'95 Desktop Theme Microsoft PlusTHM Thumbnail or Theme File Picture Publisher, PhotoMagic, Canon Digital
Cameras, and Sony Digital Cameras create these Thumbnail files; also used for Sony Ericsson Theme File, for a cell phone
THP Nintendo proprietary video format
Various Nintendo games
THR ThredWorks Embroidery Format
Thred, Embroidermodder
THS Thesaurus dictionary WordPerfect for WinTIB Acronis True Image Backup Acronis True ImageTIC FTN special file with
assotiated file descriptionALLFIX
TIF see TIFFTIFF TIFF (tagged image format
file) bitmapped fileAlchemy - PhotoStyler -PageMaker - CorelDRAW
TIGER Tomb Raider binaries files Ubi
TIL Fuzzy logic knowledge base Togai InfraLogic Fuzzy-C CompilerTIP Digital Signage Presentation Tru-Designer, Tru-Player, Tru-Scheduler part
of Tru-i Suite[3]
TIS Tile set MahJongg 3.0TJL Backup file VAXTPU editorTLB Reference table Bubble ChamberTLB Text library VAXTLB Type library [1] A binary file with information about a COM
or DCOM object so other applications can use it at runtime. Created by Visual C++ or Visual Studio. Used by many Windows applications.
TLC Compiled Tool Command Language source code
Swat
TLD Disk Image TelediskTLH Typelib Generated C/C++
HeaderVisual C++
TLP Project TimeLineTLX Website builder TrellixTM2 Typical Meteorological Year
data (new)Typical Meteorological Year
TMF Tagged Font Metric file WordPerfect for WinTMF TiVo movie TiVoTMO ZTG global optimizer default
output fileZortech C++
TMO HandsHigh ThoughtManager Outline
ThoughtManager Desktop
TMP Temporary file ALL PROGRAMSTMS TeleMate compiled script TeleMateTMY Typical Meteorological Year
data (old)Typical Meteorological Year
TMY2 Typical Meteorological Year data (new)
Typical Meteorological Year
TOC Table Of Contents text file (ASCII)
TOCG TorgaNET Diplomatic Cables State Department of TorgaTOK Borland C++ 4.x reserved
word listBCW.EXE
TOG TorgaNET TorgaNET database fileTOPC TopicCrunch SEO Project file
holding keywords, domain and search engine settings (ASCII)
TORRENT
TORRENT File BitTorrent clients (various)
TOS Character file The Only SheetTOS Self-extracting file archive
(Atari ST)TP Session-state file Turbo Profiler
TP Turbo Pascal cfg file Turbo PascalTP TinkerPlots Document TinkerPlots and Fathom Dynamic Data
Software; documents contain data tables, graphs, text, pictures, etc.
TP3 Template Harvard Graphics 3.0TPB Downloadable PCL Soft font
file backupHiJaak
TPC File produced when an inter-Topicscape topic link file is exported to Windows
3D Topicscape
TPF Downloadable PCL Soft font file
HiJaak
TPF Print data in EMF format ThinPrintTPH Help file Turbo PascalTPL Resident units library Turbo PascalTPL Template file GoldEd -ITrackTPL Template Harvard Graphics 2.0
TPOLY Data TPOLY 3D objectTPP Protected Mode Units Borland Pascal 7.0TPT Digital Signage Presentation
TemplateTru-Designer, Tru-Scheduler part of Tru-i Suite[3]
TPU Borland Pascal DOS Mode Library
Borland Pascal
TPU Command file (VAXTPU editor)
VAXTPU editor
TPW Borland Pascal Windows Library
Borland Pascal
TPW Session-state file Turbo Profiler for WindowsTPZ Archive TAR - GNUzipTR Man page input suitable for
troff -mancawf2.zip
TR Session-state settings Turbo Debugger for DOSTR2 Session-state settings Turbo Debugger for Win32TRC Debug support file Power CTrace
TRASH File found during a file scan as bugged
Windows
TRE Directory tree file PC-ToolsTRD Datafile TrID file identifier filetypes definitions
packageTRIA Data Greg Hood's ASCII TriangleTRIB Data Greg Hood's Binary TriangleTRIF Tiled Raster Interchange
FormatTRK Track (i.e. video sequence),
used by many gamesTRM Terminal settings Windows 3.xTRN Translation support file Quattro - ClarionTRS Executable file Micrografx or password file
TRS WiSo Mein Geld 2007TRS IBM Mainframe log file TRSMAINTRU True Basic source fileTRW Session-state settings Turbo Debugger for WindowsTRY Typical Meteorological Year
data (variant)TRNSYS
TS MPEG Transport Stream Various media players / softwareTS Qt Linguist TS File Trolltech Qt Linguist
TSE Data Light Map Maker ASCII SceneTSK Microsoft Multimedia Task
ApplicationWin95
TSL Exported Schedule Tru-Scheduler part of Tru-i SuiteTSM Turbo Assembler Manual TASM for OS/2TST Printer test file WordPerfect for WinTSV Tab Separated ValuesTTF TrueType Font fileTU? Packed mail FTN softwareTUD The Ultimate Draw file The Ultimate DrawTUT TutorialTV Table view settings Paradox
TVF Table view settings dBASETVn Overflow file above insert
point in Doc nWordPerfect for Win
TXC Test Configuration FormatTXF Tax eXchange FormatTXI Support file TeXTXT Common name for ASCII
text fileTXT Tab-Delimited Text File Microsoft ExcelTXT Document Extension TextEditTXW Yamaha TX-16W Wave File Convert (c) VillenaTY TiVo movie TiVo
TYM Time Stamp (PageMaker 4) PageMaker 4TZ Archive TAR - COMPRESS
TZB Archive TAR - COMPRESS - BTOATZL Tanzzle pattern file TanzzleTZX Tanzzle image file Tanzzle
U[]
Ext. Description Used byU3D Model file format Ultimate 3DU3D Universal 3D Adobe AcrobatU8 SampleUB Raw Unsigned Byte (8bit) data AWAVE
UC2 Archive UC II
UCN New archive UC IIUCS Unknownsoft Service Pack
(mainly for Shadow OS 2009)Unknownsoft Computer Systems
UDF Filter Aldus PhotostylerUDO Data Moray User Defined Object
UDIWWW bookmark data UdiWWWUDW Raw Unsigned DWord data AWAVEUE2 Encrypted archive UC IIUFI data UFO CaptureV2 settings -UFO graphic file Ulead Photo ImpactUHA UHarc archiveUHS Universal Hint System (binary
file)UI Espire source code file Geoworks UI Compiler Geos[disambiguation needed]
UI Qt Designer's UI File Trolltech Qt DesignerUI User interface Sprint
UIF Long prompts for windows WordPerfect for WinUIH Espire header file Geoworks UI Compiler GeosUL ULAW audio file
ULD Information about uploaded files
Procomm Plus - Datastorm Technologies, Inc.
ULF data MRF Mapping Tool Kit Universal List Format
ULT Music UltraTrackerUMB Backup file MemMakerUMP Umple UML Programming
Language FormatUmple
UNF Universal NES Image Interchange File Format
UNI Datafile Forecast ProUNI Music format UNIMOD - MIKMOD
UNIF Universal NES Image Interchange File Format
UNV Text file containing finite elements nodal coordinates and more See notes
Originally used by SDRC for its I-deas software; a lot of simulation software use it today
UNX Text file containing UNIX specific info
UOML UniqueObject Markup Language (UOML) is a XML-based markup language
UOP Uniform Office Format presentation
UOS Uniform Office Format spreadsheet
UOT Uniform Office Format textUPD Update data dBASEUPO Compiled update data dBASE
URL Internet Shortcut (URL) Windows ExplorerURT Utah Raster ToolkitUSE Log fileUSP Printer font with USASCII
extended character setAdobe PageMaker
USR User database file Procomm Plus - Turbo C++ tourUST UTAU vocal track UTAUUT! datafile uTorrentUTZ Mobile Phone Theme Sony EricssonUU Encoded file (ASCII) UUENCODE/UUDECODE - Uuencoding
UUE Encoded file (ASCII) UUENCODE/UUDECODE - UuencodingUW Raw Unsigned Word 16bit data AWAVE
UWF UltraTracker WaveSample UltraTracker
V[]
Ext. Description Used byV Consistency check support file ReaGeniX code generatorV Main input file for an image Vivid 2.0V Coq source fileV Verilog source file
V1, V2, ...
Split parts of a whole file JJSplit
V8 Covox 8bit file AWAVEV10 Data Gouraud Shaded VectorsV2D Voucher design file Voucher management included in JFire
(e.g. when printing a voucher)VAI multimedia PhotoDub documentVAL Validity checks and referential
integrityParadox for Windows
VAL Values list object file dBASE Application GeneratorVALA Sourcecode ValaVAN Animation VistaProVAP Value Added Process NetWare 2.xxVAP Dialogic indexed adpcm voice file VBASE/40VAR Variable file IconAuthorVB Visual Basic .Net source file Visual Basic .NET
VBPROJ Visual Basic .Net project file Visual Basic .Net Express and Visual Studio 2003-2010 Project
VBR Visual Basic Custom Control file Visual BasicVBS VBScript script file VBScriptVBX Visual Basic eXtension Visual BasicVBZ Visual Basic Setup Wizard Template Setup WizardVC6 Graphite - 2D and 3D drafting Ashlar-VellumVC Include file with color definitions Vivid 2.0VC Spreadsheet VisiCalc
VCA Visual Clip ArtVCD VideoCDVCD VirtualDrive CD Image FileVCD Value Change Dump (Verilog)
temporal database fileVCD VisualCADD Drawing FileVCR VCR drivers for ArvidVCW Visual workbench information Microsoft Visual C++VCX Spreatsheet VisiCalc AdvancedVDA Bitmap graphicsVDI Virtual Disk Image VirtualBoxVDO Story Board video image Story BoardVDR Drawing ComputerEasy DrawVEG Vegas Project Sony VegasVEW GroupWise for Windows WinVEW View file Clipper 5 - Lotus ApproachVF0 Database file OTExpert 5VFA FontLab Database file FontLabVFD Virtual Floppy Disk Windows Virtual PC (among others)VFM Ventura Font Metrics fileVFM Voting Form VoterVFN Voting Form for Customers VoterVGA VGA display driverVGA VGA display fontVGD VGA display driver Generic CADDVGM Video Game Music audio formatVGR Graphics file Ventura PublisherVHD Virtual Hard Disk Windows Virtual PC (among others)
VI LabVIEW Virtual Instrument LabVIEWVI Graphics file Jovian Logic VIVI Watcom editor script VI.EXE
VIA VIA Document Project VIA Text EditorVIC see VICAR
VICAR Graphics (Video Image Communication and Retrieval)
VID Bitmap graphics (YUV12C M-Motion Frame Buffer)
VID Graphics format Word&DeedVID MS-DOS Shell Monitor file MS-DOS 5VID Screen device driver WordVIF see VIFF
VIFF Khoros Visualization Image File Format
SDSC Image Tool
VIK Graphics format (VIKING)VIM Vim script file Vim text editorVINF data ReMPEG log file - frames infoVIR Virus or infected file
VIS VIS graphics fileVLM Vellum, Vellum 2D, Vellum Draft,
Vellum 3D, DrawingBoardAshlar-Vellum
VLM Virtual Loadable Module NetwareVM Virtual Memory file Geoworks
VMC Virtual memory configuration DOS/4GW PM 32X DOS ExtenderVMDK Virtual Disk file VMwareVMF Font characteristics Ventura PublisherVMG Nokia message file format Text Message Editor (Nokia PC Suite)VMS Text file containing VMS specific
infoVO Include file with object definition Vivid 2.0
VOB Video Object DVD-R, DVD-RWVOC Sound format (Creative Lab's Sound
File)PlayVoc
VOF Object folder VZ ProgrammerVOP Visual Orangator ProjectVOP Visual OTTHYMO ProjectVOX Dialogic adpcm file AWAVE, CoolEditVP 3DS Video posting 3D Studio
VPF Vector Product FormatVPG Graphics file VPGraphicsVPH Virtual Pascal Help VP/OS2VPI Virtual Pascal Unit VP/OS2VQA Vector Quantized Animation The Legend of KyrandiaVRM Overlay file QuattroProVRM Visual rexx source WATCOM VREXX
VRML Virtual Reality Modeling Language NetScapeVRP Project WATCOM VX?RexxVRS Video Resource e.g. video device
driverWordPerfect
VS Vellum Solids Ashlar-VellumVS Include file with surface definition Vivid 2.0
VSD Diagram Shapeware VisioVSD Visio drawing VisioVSM Visual Simulation Model VisSimVSP Sprite SPXVSQ Vocal track data Vocaloid2VSS SmartShapes file Shapeware VisioVSS Visio Template VisioVST Truevision Vista graphics fileVST Visio Template Visio
VSTO Microsoft Office add-in file Microsoft Visual StudioVUE Animation 3D StudioVUE View dBASE IV - FoxProVW Text file VolksWriter
VWR File viewer file PC Tools
VWX CAD File VectorWorks 2008VXD Windows 3.x virtual device driver Windows 3.xVZT Temporal database file GTKWave data file
W[]
Ext. Description Used byW Word chart file APPLAUSE
W01 Yamaha SY-series wave files AWAVEW01 Yamaha TX16W wave file AWAVEW30 Printer font AST TurboLaser
- Ventura Publisher
W31 Startup file Windows 3.1W3A Warcraft III Abilities Export File Contained in a
Warcraft III mapW3B Warcraft III Destructables Export File Contained in a
Warcraft III mapW3D Warcraft III Doodads Export File Contained in a
Warcraft III mapW3D Westwood 3D object format 3D models used
in Renegade and Generals
W3D Shockwave 3D object formatW3G Warcraft III Replay File File for Warcraft
IIIW3H Warcraft III Buffs Export File Contained in a
Warcraft III mapW3M Warcraft III Map File for Warcraft
III: Reign of Chaos
W3N Warcraft III Campaign File for Warcraft III: The Frozen Throne
W3O Warcraft III Object Data Export File Contained in a Warcraft III map
W3P Warcraft III Save Save File for Warcraft III
W3Q Warcraft III Upgrades Export File Contained in a Warcraft III map
W3T Warcraft III Item Export File Contained in a Warcraft III map
W3U Warcraft III Unit Export File Contained in a Warcraft III map
W3V Warcraft III Save Save File for Warcraft III
W3X Warcraft III Expansion Map File for Warcraft
III: The Frozen Throne
W3Z Warcraft III Save Save File for Warcraft III
W40 renamed system files (AUTOEXEC.BAT, COMMAND.COM, CONFIG.SYS,DBLSPACE.BIN.DRVSPACE.BIN,MSDOS.SYS) of previous MS-DOS version
Windows 95, 98, ME (dual-boot feature)
W44 Temporary file for Sort or Index dBASEW95 Something for Windows95 Win95WAD Where's All the Data? Doom - Doom2WAD Nintendo proprietary format for Wii channels, menus,
etc.Nintendo Wii
WAG Yard Contents File FYMWAI Warcraft III AI Data File Warcraft III AI
Data FileWAR Java Web Archive A Java file
format used to package and deploy web applications
WAS ProComm Script File (source code) ProCommWAV Sound format (Microsoft Windows RIFF WAVE) Media PlayerWAX TVTonic WAX video packaging Wavexpress
TVTonicWAX ProComm compiled script ProCommWAX Windows Media Audio Shortcut Windows Media
Player (Windows Media Audio Redirector)[4]
WB1 Notebook Quattro ProWB2 Spreadsheet Quattro ProWBF Microsoft Windows Batch File CatchWBK Document/workbook or Microsoft Word backup file WordPerfect for
Win or Microsoft Word
WBT Norton Desktop Norton DesktopWBT Wilsonware Batch file WinbatchWCD Condes Event Data file CondesWCD Macro token list WordPerfect for
WinWCH WordPerfect Macro Facility WPWCM Data transmission file Microsoft WorksWCM Macro WordPerfect for
WinWCP Product information description WordPerfect for
Win
WD InfoSelect Data fileWDB Database Microsoft WorksWDM Admin tool connection definition War FTPWE? Packed mail FTN softwareWEB WEB source code file Web Easy
ProfessionalWebOOGL Web Object Oriented Graphics Library
WFB Turtle Beach WaveFront Bank AWAVEWFD Turtle Beach WaveFront Drum AWAVEWFM Form object dBASE Form
DesignerWFN Font CorelDRAWWFP Turtle Beach WaveFront Prog. AWAVEWFT Web Family Tree GRAMPSWFX Data file WinfaxWG1 Worksheet Lotus 1-2-3/GWG2 Worksheet Lotus 1-2-3 for
OS/2WID Width table Ventura
PublisherWIFI Torga OS Wifi Settings Database 14th Information
Division (Torga)WIM Windows Imaging Format ImageXWIN Window file FoxPro - dBASE
WIREFRAME
Data EMSE mesh
WIX Windows Installer XML WiXWIZ Page wizard Microsoft
PublisherWK1 Spreadsheet Lotus 1-2-3
version 2.x - Lotus Symphony 1.1+
WK3 Spreadsheet Lotus 1-2-3 version 3.x
WK4 Spreadsheet Lotus 1-2-3 version 3.4
WKB Document WordPerfect for Win
WKE Spreadsheet Lotus 1-2-3 educational version
WKF VISI Working file Vero SoftwareWKI Spreadsheet format Lotus 123 2xWKQ Spreadsheet QuattroWKS Spreadsheet Lotus 1-2-3
version 1A - Lotus Symphony
1.0, Microsoft Works
WKS Workspace XlispWKZ Spreadsheet format Dos NavigatorWLK Graphics Virtus
WalkthroughWLK Walk Through for any game manyWMA Windows Media Audio audio fileWMC Backup of startup files by Windows MathCad
autoexec.wmcMathCad
WMC Macro file WordPerfect for Win
WMC Text file WordMARCWMDB Windows Media Player database Windows Media
PlayerWMF Windows MetaFile vector graphicsWMO WoW Map Object Blizzard
Entertainment games (World of Warcraft/Warcraft series)
WMP Graphics (Windows Magic Icon Palette)WMV Windows Media Video video fileWN Text NeXT WriteNow
WNF Corel Draw Font File CorelDrawWOA Swap file Windows 3.xWOC Organization Windows
OrgChartWOW Music (8 channels) Grave Mod
PlayerWP Word Perfect Format WPWP5 Document WordPerfect 5.xWPD Document WordPerfect 6.0
- PFS:WindowWorks
WPD Windows printer driver (uninstallable) WindowsWPF Fax WorldPortWPF Form WordPerfectWPG WordPerfect Graphics vector graphics DrawPerfectWPJ Watcom C/C++ IDE project IDE.EXEWPK Macros WordPerfect for
WinWPL MediaRack Wave Playlist MediaRackWPL Windows Media Playlist, for Windows Media PlayerWPM Macros WordPerfectWPS Text document Microsoft WorksWQ! Compressed spreadsheet Quattro Pro
WQ1 Spreadsheet Quattro ProWR1 Spreatsheet Lotus Symphony
1.1 - 1.2 - 2WRD Template CharismaWRI Write editor format Write -
WinWordWRK Spreadsheet Lotus Symphony
1.0WRL VRML fileWRP Archive Amiga WARPWRS Windows Resource e.g. might indicate error if word
cannot openWordPerfect for Win
WS APL WorksheetWS Text file WordStar 5.0-6.0WS2 Text file WordStar 2000WSD Document WordStarWSP Workspace Fortran
PowerStationWSQ Wavelet-packet Scalar Quantization Format
WSRC X-wais sourceWST Text file WordStarWTR Working Timetable rules file SimsigWTT Working Timetable timings file SimsigWTF World of Warcraft Data File World of
WarcraftWTF WinTaper DataWWB Button bar for document window WordPerfect for
WinWWF WWF Document FormatWWK Keyboard layout WordPerfect for
WinWXH Program/Script File WaxHtml Web
Programming Language
WXP Document EXP for Windows
WZ Wizet game archive file Wizet/Nexon MapleStory
WZA Encrypted archive file Department of Defense Encryption Wizard (Public Edition)
X[]
Ext. Description Used by
X Archive X1.EXEX AVS X image file SDSC Image ToolX DirectX 3D objectX LEX source code fileX XBasic Source code file Xbasic
X3D x3d and xdart FormatsXA XA audio file used in SimCity 3000 by Maxis, also by
Sony PlayStationXAR Xara graphics file Files created by Xara Photo & Graphic
Designer (formerly Xara Xtreme and Xara Studio); early versions used the extension ART
XBE Xbox Executable XboxXBM X11 Bitmap graphics fileXLBL extensible Business Reporting
LanguageBusiness Reporting
XCF Gimp image file The GimpXCK Extended crack file (usually text)XCL Xtree for Windows Script file Xtree for WinXDF OS/2 extended disk format image XDFCOPY.EXEXDM Directory Manipulator for 32-bit
Protected ModeXenotech Research Labs
XE Xenon - for Associative 3D Modeling Ashlar-VellumXEX Xbox 360 Executable FileXFN Printer font Xerox 4045 - Ventura PublisherXFR Ventura Publisher Bitmap Editor
Font fileXFT 24 pin printer font ChiWriterXI Fast Tracker 2 instrument file AWAVEXI Fastracker 2.0 Instrument File Fastracker 2.0
XIF Xerox Image Format Pagis Pro 2.0 and 3.0XLA Add-in macro sheet Microsoft ExcelXLA XLib Archive xlibpas2.zipXLB Microsoft Excel Toolbar Microsoft ExcelXLC Microsoft Excel Chart Microsoft ExcelXLD Microsoft Excel Dialog Microsoft ExcelXLF Extensible LADAR Format LadarSIMXLK Microsoft Excel Archive Microsoft ExcelXLL Microsoft Excel Dynamic Link
LibraryMicrosoft Excel
XLM Microsoft Excel Macro File Microsoft ExcelXLS Microsoft Excel Spreadsheet Microsoft Excel
XLSB Microsoft Excel 2007 Binary Workbook (BIFF12)(Spreadsheets)
Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
XLSM Microsoft Excel 2007 Macro-Enabled Workbook (Spreadsheets)
Microsoft Excel 2007 (see Microsoft Office 2007 file extensions)
XLSX Office Open XML Workbook Microsoft Excel 2007 (see Microsoft
(Spreadsheets) Office 2007 file extensions)XLT Microsoft Excel Template Microsoft ExcelXLT Translation table Lotus 1-2-3 - Symphony - Procomm PlusXLV Microsoft Excel Module Microsoft ExcelXLW Microsoft Excel Workbook Microsoft ExcelXM Fast Tracker 2 extended module AWAVE, Mod4Win, FastTracker,
ImpulseTrackerXM Music format FastTracker - Cubic Player
XMC Assisted contact lists file format, based on xml and used in kindergartens and schools
Classmates iPhone app
XMOD
Monarch Model Monarch Professional
XMI Compressed eXtended MIdi musicXML eXtensible Markup Language fileXMF eXtensible Music Format
XMPZ XML Miradi Project Zipfile MiradiXMV Video XboxXNF Standard Network File formXnn Secondary indexes Borland ParadoxXOF RenderMorphicsXP eXtended Pattern FastTracker 2.0
XPL X-Plane system file Laminar researchXPM X11 Pixel Map graphics fileXPO Microsoft Dynamics AX Export fileXPS Open XML Paper Specification /
OpenXPSopen standard document format initially created by Microsoft and similar in concept to Adobe PDF files
XQT Executable file WaffleXQT Macro sheet SuperCalcXRF Cross-reference fileXSF Data Microsoft InfoPath file
XSPF XML Sharable Playlist FormatXTB External translation table LocoScriptXTP XTreeGold overlay XTreeGoldXVF Xyngo Video File Xyngo Video BoardXWD X Window System window dump
image graphics fileSDSC Image Tool
XWK Keyboard mapping CrosstalkXWP Session CrosstalkXWP Text file Xerox WriterXX Encoded file (ASCII) XXENCODE
XXE Encoded file (ASCII) XXENCODEXXX Singer Embroidery Format EmbroidermodderXY Text file XY WriteXY3 Text file XYWrite IIIXYW Text file XyWrite III
XYZ Molecular coordinates XMol, RasMol
Y[]
Ext. Description Used byY Archive (Amiga) YabbaY YACC grammar file Yacc/Bison
YAL Data custom/nature.yal Arts & LettersYC Archive YACC (YAC.EXE)
YLIB Yookoo Music Library Backup File Yookoo Media PlayerYnn Secondary index Borland ParadoxYMP Yast Meta Package YAST2 (SUSE Linux Package Manager)
YOOKOO
Yookoo Playlist Yookoo Media Player
YST Data YASRT Raytracer sceneYRD Yard Tracks File FYMYUV Graphics format (YUV)YY Bison grammar file BisonYZ Archive YAC
Z[]
Ext. Description Used byZ Archive WinZipNT - COMPRESS - PACK
Z01-Z99 Split WinRAR ArchiveZ2S Zoo Tycoon 2 saved game Any game in the Zoo Tycoon 2 seriesZ3 Infocom game module
Z3D Zmodeler-file Zmodeler 1 & 2Z64 Nintendo 64 ROM Project64 Nintendo 64 emulatorZ80 Snapshot ZX Spectrum emulator by g.a.lunterZAD ZFax digitized voice file ZFaxZDG Compressed ZiffNet text document ZviewZED BitTorrent Link PodmailingZER Data fileZIP Archive PKZip - WinZip - Mac OS X
ZOO Zoo Tycoon saved game Any game in the Zoo Tycoon (first) seriesZYP Reason Subtractor Patch File Propellerhead ReasonZZT ZZT World Any world created using the ZZT editor