Perhaps you have always wondered, what is Hillary Clintons YSlow score? Who is the master of image optimization, and who has so much image-bloat that it weighed more than Mike Huckabees entire page? Check out the article I wrote on YDN.
Julien Lecomte presented his research into High Performance Ajax Applications. If you prefer there is also a video on YDN.
Today was my first day at Yahoo. I spent most of the day in orientation but I am already impressed with the culture. People seem genuinely happy and able to make working hard a part of living well. And damn they’re smart! Fabulous well-rounded geeks. I know, I know, it sounds like I’ve been drinking the kool-aide.
Their site has website performance information and houses the Yslow Firefox extension.
Yahoo has released the much awaited (by me at least!) YSlow firebug extension which tests download speed and gives recommendations based on the famous 14 rules for fast web pages.
In my work I have been able to test a few of these parameters; including the number of hits on the server, expressions in the CSS files, gzip, and minify. I’ve had great results with changes made on high volume websites especially with reductions in the number of http requests for images called from the css.
In particular I’ve seen around 25% improvements in download speed when I combined the images for the four corners of a rounded corner box, and included larger images which hold all states of an element in addition to all sides.
YSlow has several views :
- Performance – grades your website based on the rules for fast web pages.
- Stats - shows you the difference between your page load with our without cache.
- Components – indicates the information used to test your site; Type, URL, Expires, Gzip, Response Time, Size (Ungzip), and ETag