PUBLIC MARKS from Hiéroglyphe with tag firebug

YSlow analyzes web pages and tells you why they're slow based on the rules for high performance web sites. YSlow is a Firefox add-on integrated with the popular Firebug web development tool.

A Firefox extension that makes web development fun again

What if you could say goodbye to alert and not-so-useful logger scripts and have a real debugging API to debug Javascript. While it hasn’t made it to the public yet, the next version of Joe Hewitt’s Firebug will finally give us an easy to use, full-featured debugging environment for Javascript. Fortunately, I’ve had the pleasure of being able to test the new version of Firebug and this post will outline some of what you can expect.