LCP
Largest Contentful Paint, the time until the largest visible element has rendered, one of the Core Web Vitals. Under 2.5 seconds is the threshold.
What LCP means
It is dominated by the hero image or heading and by whatever blocks it; a lazy-loaded hero image is the most common self-inflicted cause.
Where LCP comes up on this site
- Core Web Vitals field data for sites CrUX does not coverCollecting your own field data Google's open-source web-vitals library reports LCP, INP and CLS, plus TTFB and First Contentful Paint, from real page views in any modern browser.
Terms this definition uses
Related terms in Measurement and evidence
The vocabulary for saying how strongly something is known.
read equivalence · content-change clock · self-claim ledger · agent task canary · revocation delta · signed verdict · hash-prefix lookup · k-anonymity · publication floor · data snapshot · evidence level · false positive · denominator note · percentile rank · population baseline · cohort asymmetry · self-audit invariant · unscored measurement · dated series · change receipt · regression · finding age · graded through a wall · self-audit · placeholder in record · fetcher disagreement · own-host loop · score version · row review · double-counted defect · cosmetic row · gated row · log file analysis · AI referral attribution · finding fingerprint · finding state · headroom · fix list · render gap · lab data · Lighthouse · RUM · CLS · INP · topicality · intent coverage · canary · citation rate · presence rate · answer stability
Questions about LCP
What is LCP?
Largest Contentful Paint, the time until the largest visible element has rendered, one of the Core Web Vitals. Under 2.5 seconds is the threshold.
Which area of the glossary does LCP belong to?
Measurement and evidence: The vocabulary for saying how strongly something is known.
See it in the full glossary · 731 terms across 19 areas.