Google Pagespeed Insights

Page speed checks for mobile and desktop run from the browser toolbar with this Chrome extension. A user enters a URL and gets a measurement of how fast that website loads on both device types, without opening a separate testing page. It is pitched at developers hunting performance bottlenecks, site owners who want to keep visitors engaged, and SEO specialists who treat speed as a ranking factor. Faster pages are presented as a way to lower bounce rates and raise engagement. The extension carries the Google PageSpeed Insights name but is a third party browser tool built around quick, repeatable speed measurements. Using the extension means a user can measure any website's speed without leaving the page, and it is presented as a way to make websites faster and more efficient.