TL;DR
Largest Contentful Paint (LCP) is a Core Web Vital that records the time, from when the page starts loading, until the largest visible content element (image, video poster, or block of text) finishes rendering in the viewport.
What is Largest Contentful Paint (LCP)?
Largest Contentful Paint (LCP) is a Core Web Vital that records the time, from when the page starts loading, until the largest visible content element (image, video poster, or block of text) finishes rendering in the viewport.
Read our guide: What is LCP and how to improve it. Or work with us through our done-for-you website speed optimization services.
LCP Thresholds & Benchmarks
| Metric | Good | Needs Improvement | Poor |
|---|---|---|---|
| LCP | ≤ 2.5 s | 2.5 s, 4.0 s | > 4.0 s |
How LCP is Measured
LCP is reported as a duration in seconds, measured in the field by the Chrome User Experience Report and the PerformanceObserver API, and in the lab by Lighthouse and WebPageTest.