WebPageTest is a developer tools chrome extension. it's a free extension , it has 3,000+ active users since released its first version, it earns an average rating of 5.00 from 4 rated user, last update is 3240 days ago.
This extension launches WebPageTest tool on a current URL loaded in the browser. Test your websites faster with one click.
You could download the latest version crx file or older version files and install it.
English.
100% user give 5-star rating. Read reviews of webpagetest
You could find more help information from webpagetest support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of webpagetest.
You could click to report abuse of webpagetest.
Why didn't I know about this 5 years ago! What a great extension!