YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for… Created by Yahoo! YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. YSlow is a Firefox add-on integrated with the Firebug web development tool. YSlow grades web page based on one of three predefined ruleset or a user-defined ruleset. It offers suggestions for improving the pages performance, summarizes the pages components, displays statistics about the page, and provides tools for performance analysis, including Smush.it™ and JSLint.
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Yahoo! YSlow
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| # | Image | App Name | Features | Platforms | Price | Website Link |
| 1 |  |
Yellow Lab Tools | Web | Free | Website | |
| 2 |  |
Gtmetrix | Web | Free | Website | |
| 3 |  |
AnalyzeSiteSpeed.com | Web | Free | Website | |
| 4 |  |
CYFIRMA CAP | Web | Freemium | Website | |
| 5 |  |
WebsiteSpeedChecker.com | Web | Free | Website | |
| 6 |  |
DareBoost | Web | Freemium | Website | |
| 7 |  |
PageSpeed Insights |
Firebug Chrome |
Mac Windows Firefox Linux |
Free | Website |
| 8 |  |
WebPagetest | Web | Free | Website | |
| 9 |  |
Google Lighthouse | Mac Windows Linux |
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| 10 |  |
Checkbot | Chrome | Mac Chrome OS Windows Linux |
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