1. http://stevesouders.com/docs/velocity-20090624.ppt Disclaimer: This content does not necessarily reflect the opinions of my employer.

2. browser smush.it YSlow 2.0, Page Speed JavaScript: The Good Parts Velocity this past year

3. how does your web feel?

4. why? web site owners 1.don't know their web site is slow 2.don't know what is slow 3.don't know how to fix it 4.don't/can't prioritize the fix

5. my site slow? really?? easy instrumentation – Jiffy + AppEngine community opt-in – a la Alexa trends messaging visualizations – MSFast

6. what to fix HttpWatch, Firebug Net Panel, Fiddler sample size? non-network – HTML, JS, CSS

7. how to fix it YSlow, Page Speed, Pagetest, VRTA, neXpert, MSFast sample size? non-network – HTML, JS, CSS backend

8. prioritizing the fix tradeoffs, ROI Bing: +1 second == -2.8% revenue Google: +400ms == -0.76% searches/user Shopzilla: faster: +7-12% revenue, -50% nodes wow versus infrastructure technical constraints

9. BHAP single threaded browsers level of difficulty connection speeds mobile ads

11. things are getting better March 2007 March 2009 future Expires26%93% gzip CSS, JS5/1010/10 sprites2/109/10 minify JS4/109/10 AOL, eBay, Facebook, Google Search, Live Search, MSN, MySpace, Wikipedia, Yahoo, YouTube

12. don't give up optimize locally think globally cache "compiled" JS multipart downloads prefetching, preferred caching WordPress, PHP, Dreamhost fast-by-default Internet infrastructure