Gtmetrix
GTmetrix is a free tool that analyzes your page's speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.
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Functions of Gtmetrix
Viewer
Sync
Synchronize
E-book
E-book Management
E-book Reader
E-book Synchronizer
Gtmetrix Video
Alternatives to Gtmetrix
Calibre
Paid
Calibre is a piece of software that tests different user metrics for your website so you can better troubleshoot how different customers from around the world will interact with your site based
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DareBoost
Freemium
All-in-one service for website speed test, web performance monitoring and website analysis (speed, SEO, quality, security). Web performance has never been so easy.
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WebPagetest
Free
Run a free website speed test from around the globe using real browsers at consumer connection speeds with detailed optimization recommendations.
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