THE ANATOMY OF LCP – A DEEP DIVE INTO SUB-PARTS

Summary from the TLDR Dev newsletter

Largest Contentful Paint (LCP) is a Core Web Vitals metric that measures when the most meaningful piece of content on a page becomes visible. Optimizing it matters because users should see this primary content as early as possible. There's more to optimizing than just reducing image file sizes. This article breaks down LCP into sub-parts (Time to First Byte, Resource Load Delay, Resource Load Duration, and Element Render Delay) to explain exactly where time is being spent, so readers know how to diagnose slow LCP on sites.