LCP
The Largest Contentful Paint (LCP) metric reports the render time of the largest image or text block visible within the viewport.
Largest Contentful Paint (LCP) is an important, user-centric metric for measuring perceived load speed because it marks the point in the page load timeline when the page's main content has likely loaded—a fast LCP helps reassure the user that the page is useful.
https://gyazo.com/bdd5dedf540fc28c8d5a35c0ff53cb6a https://web.dev/defining-core-web-vitals-thresholds/