Yahoo Releases YSlow for Firebug

Yahoo! Developer Network recently released YSlow, and extension for Firebug, the great web development extension for Firefox we talked about last month (here).

FTA:

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 offers three views or panes in Firebug.


  • Performance View: Gives your page a grade for a number of performance checks.

  • Stats View: Shows you the total size of the web page for bothed cached and non-cached content.

  • Components View: Displays all of the components on the page including type, url, expiry date, and a number of other goodies.


YSlow is a very cool addition to Firebug. If you are a web developer it should definitely be in your toolkit.