Glossary · LCP (Largest Contentful Paint)
LCP (Largest Contentful Paint)
The time from page navigation start until the largest visible content element finishes rendering.
LCP measures perceived loading speed. The "largest contentful element" is typically a hero image, a large heading, or a video. Good LCP is under 2.5 seconds; needs improvement is 2.5–4.0; poor is over 4.0.
Common LCP fixes: optimize hero images, preload critical resources, reduce render-blocking JavaScript, use a CDN, switch to faster hosting.