Speed up your web pages with YSlow

Found Yslow via Yahoo developer network;

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. YSlow gives you:

• Performance report card
• HTTP/HTML summary
• List of components in the page
• Tools including JSLint

Yslow takes the guessing out of the performance equation, help you optimize the overall performance for your website and reduce page load time.