Core Web Vitals
Core Web Vitals are the three metrics Google uses as page experience ranking signals: Largest Contentful Paint (LCP, measuring load speed), Cumulative Layout Shift (CLS, measuring visual stability), and Interaction to Next Paint (INP, measuring interactivity). Pages scoring "Poor" on any of these are at a disadvantage against pages that pass. These three checks identify pages with poor Core Web Vitals scores.
LCP is over 4 seconds (Poor) — the main content takes too long to appear.
CLS is above 0.25 (Poor) — elements are shifting unpredictably as the page loads.
INP is above 500ms (Poor) — the page is slow to respond to user interactions.
Audit Core Web Vitalsacross your site
The audit identifies pages with poor LCP, CLS, and INP scores so you can prioritize performance improvements.