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.
Performance view scores the page against each performance rule, generates an overall YSlow grade for the page, and lists specific recommendations for making the page faster.
Stats view summarizes the total page weight, cookie size, and HTTP request count.
Components view lists each component (image, stylesheet, script, Flash object, etc.) in the page along with HTTP information relevant to page load times.
YSlow gives you:
* Performance report card
* HTTP/HTML summary
* List of components in the page
* Tools including JSLint
Download it now and wait to see just how bad that auto-generated .Net Markup really is!
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