Site Speed Analysis With YSlow

This is a nifty little tool to add to your web development toolkit! Yahoo has developed a nifty website speed analysis Firebug extension. Yep. Not Firefox…FireBug. (Which I guess makes it a Firefox extension with a dependancy…but whatever). The extension is YSlow which Yahoo! describes as:

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:

Install Firebug first!

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

Once installed, the plugin adds its features onto Firebug itself, giving a few extra things to click on and view. (Note the added menu options at the top of the following image):

perfview

If you are curious about what to do with the data that YSlow provides, Yahoo has some nice docs as usual. Overall, this is a sexy little tool!

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2 Responses to “Site Speed Analysis With YSlow”

  1. pingback pingback:
    Armenian Eagle » Web Developers Should Use “YSlow” for Firebug

    [...] friend Matt informed me about an extension to firebug called YSlow that was developed by Yahoo. Before you can install YSlow, you must install [...]

    Reply to this comment.
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  2. AvatarErich Beyrent

    I’ve been doing a lot of work with CakePHP, a PHP port of Ruby on Rails (which Mambo will now be built on top of). I was excited to see that someone wrote a packer utility for CakePHP, which was prompted by a poor score from YSlow.

    Read the article at: http://blog.bradleyboy.com/2007/07/28/assetpackager-for-cakephp/

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