Her Pagespeed Insights Google changed. The company now appears to be using a "new" technology they call it Lighthouse. This particular technology was first presented at Google I/O 2017. Since then, it has evolved to help every web developer looking for better results.
Lighthouse is an automated tool open source to improve the quality of websites. You can run it on any website. It has controls for performance, accessibility, web applications and more.
You can run Lighthouse from Chrome DevTools, from line commands or like Node module. Give Lighthouse a URL to check, and it will start running a series of checks on the page of interest.
It will then show you a report on what is happening with the page.
From there, you can use the red indicators as indicators of how you can improve your page. Each audit also provides you with a reference document that explains why the audit is important and how you can correct the errors.
Those interested in Chrome Lighthouse can add it extension from here.
Watch the presentation video:
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