Largest Contentful Paint (LCP)
Largest Contentful Paint (LCP) is a new page load metric for your website that helps you measure how fast your webpage takes to load. It is one of the most important user-centric metrics for measuring perceived load speed.
It is a high-level metric on Google page speed created to give you better user experience with a more accurate reading of how fast real-world content is loading for website visitors. LCP is also aiming to provide meaningful results even for web developers who don’t annotate their sites.