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Transcript of Performance FTW
- 1. PERFORMANCE FTW Why your website performance is such a priority
Enrico Foschi Front End Lead @ SkillPages
3. Performance has a number of implications(very important ones)
4. Google penalizes slow websites
Random Google guy @ Velocity Conference 2011
And performance is one of the main criteria on SEO ranking
Random Google guy #2 next to Random Google guy @ Velocity Conference 2011
5. Slow websites
6. Chicks dig
fast websites!(and users too)
7. FASTER WEBSITEmeansMORE USERS
8. I WANT
DATA!(and youre right)
9. 75% people do not return to a website that takes more than 4 seconds to load
study from Akamai
study from University of Nebraska
10. Some interesting facts...
If the website loads in 3 instead of 2 seconds, you risk to lose up to 40% of visitors.
11. Some interesting facts...
For every 100ms increase in load time of amazon.com decreased sales by 1%.
Kohavi and Longbotham 2007
12. Some interesting facts...
400ms slower page would see 5-9% more people leave before the page finished loading.
Yahoo! Study on Yahoo! homepage
13. Some interesting facts...
A change from loading a 10-result page in 0.4 seconds to a 30-result page loading in 0.9 seconds decreased traffic and ad revenues by 20%.
14. 20% LESS REVENUE!
(damn, this user are really fussy!)
15. So, YES!
And its all about SURVIVAL
16. WHAT NOW?
17. Step #1
18. Step #2
low hanging fruits first dont reinvent the well
19. Step #3
Enrico Foschi http://skillpages.com/enrico.foschi - @enricofoschi