Page Speed Analysis is a api extension for chrome. also, it is internet speed tester extension and pagespeed test extension. it's a free extension , it has 488 active users since released its first version, it earns an average rating of 5.00 from 1 rated user, last update is 2687 days ago.
This extension is designed to give users an informative diagnostic report on the efficiency of their web pages. Using Google's PageSpeed Insights API, the PageSpeed Test Extension displays a detailed report on the overall quality of your web page, showing an overall efficiency rating, optimization suggestions, and a resource breakdown chart—all tailored to help you make your websites stunningly efficient.
You could download the latest version crx file or older version files and install it.
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100% user give 5-star rating. Read reviews of page speed analysis
You could find more help information from page speed analysis support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of page speed analysis.
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Very reliable .. and the suggestions are really helpful