Largest Contentful Paint (LCP)
Largest Contentful Paint (LCP) measures the loading performance of your website.

Largest Contentful Paint is part of the core web vitals as one of the three main metrics used to measure site speed. Learn more on how you can design for site speed.
Have a look at the factors that Impact LCP, FID/TBT, and CLS scores and research on the state of Core Web Vitals here.