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Image Optimization, Part 5: AlphaImageLoader
About the Author: Stoyan Stefanov is a Yahoo! web developer working for the Exceptional Performance team and leading the development of the YSlow performance tool. He also an open-source contributor,...
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YUI Theater — Nicole Sullivan: "Design Fast Websites (Don’t Blame the Rounded...
Nicole Sullivan is a website performance specialist and a former member of Yahoo’s Exceptional Performance Team. She is currently writing a book for O’Reilly with Stoyan Stefanov on performance...
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YUI Theater — Douglas Crockford: "Ajax Performance"
Douglas Crockford returns to YUI Theater with another chapter in his evolving lecture series. This session, “Ajax Performance,” debunks common misconceptions about the relationship between JavaScript...
View ArticleMobile Browser Cache Limits: Android, iOS, and webOS
.cachenotes, .cachestats { font-size: 12px; } .cachenotes { margin: 0.5em auto 1.5em; } .cachenotes p { margin: 0 auto 0.4em; } .cachestats td, .cachestats th { padding: 2px; text-align: center;...
View ArticleMobile Browser Cache Limits, Revisited
In Mobile Browser Cache Limits: Android, iOS, and webOS, I shared the results of my attempts to determine browser cache limits on Android, iOS, and webOS devices. At the end of the article, I wrote:...
View ArticleImproving perceived site performance with spinners
At the London Ajax meetup this week, Piotr (one of the creators of the rather good jsfiddle.net talked about spinners — the pretty common “I’m doing something” indicator — and how users perceive them....
View ArticleAnnouncing YUI Compressor 2.4.6
We’re pleased to announce the immediate availability of version 2.4.6 of the YUI Compressor. This version contains mostly updates related to Compressor’s handling of CSS minification and introduces...
View ArticleYUI and Loader changes for 3.4.0
In 3.4.0 we started the process of shifting some of Loader’s logic around, to not only make it more performant, but to make it more robust and easier to use in other places (like on the server). We...
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Next-Gen YSlow powered by YUI
A couple of weeks ago, Yahoo! announced YSlow for Mobile at Velocity 2011, bringing the power of YSlow performance analysis to the mobile world. YSlow for Mobile works as a bookmarklet, making it...
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Shifter, fast YUI module building
Our build system has been on my mind lately, our old ant system was just getting too slow to keep up with the changes I was making and it was making it very difficult for our Automatic Travis Pull...
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