Core Web Vitals is a developer tools chrome extension. it's a free extension , it has 8,000+ active users since released its first version, it earns an average rating of 5.00 from 3 rated user, last update is 1275 days ago.
The extension basically measures the Google Core Web Vitals. It will highlight the Cumulative Layout Shifts in the page and as well as the Largest Content in the page, which helps the developers to understand the HTML elements that contribute to the scores. More over in the developer console, it also log the HTML elements that made a layout shift. This will make the developers easily identify the HTML elements to fix.
You could download the latest version crx file or older version files and install it.
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You could find more help information from core web vitals support page.
You could send emails to publisher, or check publisher's website.
You could click to report abuse of core web vitals.