The Largest Contentful Paint is documented on the website Google Web Dev. This page translates into French and summarises the main content

<aside> 💡 The Largest Contentful Paint (LCP) is an important metric, which focuses on the user's perception of loading speed as it marks the point in the loading process when the main content of the page has probably loaded. A fast LCP assures the user that the page is usable.

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What is the LCP?

Largest Contentful Paint or LCP is a metric that measures the rendering time of the largest visible text or image from the start of the page load.

What is a good LCP score?

To give a good experience, websites should have an LCP of less than 2.5 seconds. To make sure you are achieving this goal for the majority of your users, you can check that 75% of your users (on mobile and desktop) have this score. Quanta's Real User Monitoring allows you to do this.

Which elements can be considered as the largest content?

The types of elements considered are:

Additional elements (e.g:<I'm not sure what to do.,<Video) are envisaged in the standard in the future.