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.
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Related terms
Core Web Vitals
Core Web Vitals are a set of Google-defined user-experience metrics measuring loading performance (LCP), interactivity (INP), and visual stability (CLS).
Page Speed
Page speed is how fast a webpage loads and becomes interactive — a key user experience signal and a confirmed (modest) Google ranking factor.
CLS (Cumulative Layout Shift)
CLS is a Core Web Vitals metric measuring unexpected layout shifts that occur as a page loads, scored from 0 (perfect) to higher (worse).
INP (Interaction to Next Paint)
INP is a Core Web Vitals metric measuring how quickly a page responds to user interactions, replacing First Input Delay (FID) in 2024.