Core Web Vitals (CWV) are a set of real-world, user-centred performance metrics Google uses as a ranking signal: Largest Contentful Paint (LCP) for loading, Interaction to Next Paint (INP) for responsiveness, and Cumulative Layout Shift (CLS) for visual stability.
Core Web Vitals
Definition
Google's set of user-experience metrics — LCP, INP and CLS — that measure loading, interactivity and visual stability.
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Pillar Guide
Core Web Vitals — Complete Guide