YSlow

YSlow 3.1.2 CRX for Chrome

A Free Developer Tools Extension

Published By yslow.org

YSlow (ninejjcohidippngpapiilnmkgllmakh): Make your pages faster with Yahoo!'s page performance tool... Read More > or Download Now >

YSlow for Chrome

Download CRX

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105.66 KB

Chrome Store

Tech Specs

  • • Type: Browser Extension
  • • Latest Version: 3.1.2
  • • Price: Freeware
  • • Offline: No
  • • Developer: yslow.org

User Reviews

  • 298 Votes, Average: 4 out of 5
  • • Rating Average
  • 4 out of 5
  • • Rating Users
  • 298

Download Count

  • • Total Downloads
  • 2539
  • • Current Version Downloads
  • 2526
  • • Updated: February 20, 2013

YSlow is a free Developer Tools Extension for Chrome. You could download the latest version crx file and install it.

More About YSlow

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. YSlow grades web page based on one of three predefined ruleset or a user-defined ruleset. It offers suggestions for improving the page's performance, summarizes the page's components, displays statistics about the page. See the complete changelog at https://github.com/marcelduran/yslow/blob/master/CHANGELOG Limitations (http://yslow.org/ruleset-limitations) ------------------------------------------------------------------------------------ Since Google Chrome has no API for built-in Network Panel available yet, YSlow for Chrome relies on cross-domain AJAX requests to all resources found on the page being analyzed in order to get HTTP headers information, thus do expect some limitation. e.g: * Redirects are resolved on AJAX requests with no information about the number of requests involved (301, 302), so redirects rule is ignored (no penalty); * XHRs (AJAX) on the page can't be detected, thus 2 AJAX rules are ignored (no penalty); * Post onload information per resource on the page is not available, hence an experimental technique is used instead which relies on reloading the entire page inside an iframe.

Download YSlow 3.1.2

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