SEO
LCP (Largest Contentful Paint)
Quick definition
LCP is a Core Web Vitals metric measuring how long it takes for the largest visible element above the fold to render.
LCP target: under 2.5 seconds for 'Good'. Common LCP elements include hero images, headline text, and video posters.
Why LCP (Largest Contentful Paint) matters
Slow LCP usually traces to oversized images, slow servers, render-blocking JavaScript, or fonts that delay text rendering.
How LCP (Largest Contentful Paint) works in practice
Improve LCP by preloading the hero image, serving modern formats (WebP/AVIF), enabling HTTP/2 or HTTP/3, caching aggressively, and stripping render-blocking scripts.