Term
Core Web Vitals
Core Web Vitals are three Google metrics (LCP, INP, CLS) measuring loading speed, interactivity and visual stability of a page — part of the Page Experience signals.
Core Web Vitals — explained in more detail
The three core metrics: LCP (Largest Contentful Paint, ≤ 2.5 s = good) measures when the largest visible element finishes loading. INP (Interaction to Next Paint, ≤ 200 ms = good) measures responsiveness to user interactions and replaced FID in March 2024. CLS (Cumulative Layout Shift, ≤ 0.1 = good) measures unexpected layout shifts during loading.
Core Web Vitals are one aspect of Page Experience, not the entire performance score. They influence ranking but are only one of many factors — content and relevance still outweigh raw performance.
Distinction from similar terms
The Lighthouse score comes from synthetic lab measurements (controlled conditions, one device, one run). For ranking, however, Google evaluates field data from the CrUX report — real Chrome user sessions. Lighthouse helps with optimization; the CrUX value is what actually matters for ranking.
Entdecke mehr
CLS (Cumulative Layout Shift)
CLS measures unexpected layout shifts during page load. A Core Web Vital — "good" is ≤ 0.1 (unitless score).
LexikonTechnical SEO — what Google actually has to crawl, render and index
How crawl budget, robots, sitemap, JS rendering, indexing, canonical and Core Web Vitals fit together — the full arc for production sites.
NewsGoogle Search Central Live Toronto 2026 — what Google officially said about the future of search
Information Gain as the new guideline, Google-Extended clarified, AI Mode with 93% zero-click. The key statements from Toronto.