Core Web Vitals
Chrome UX Report (CrUX) field data for your sites — one analysis uses one slot from your monthly quota.
Run analysis
Mobile and desktop use separate CrUX dimensions; pick the form factor you care about.
Form factor
Check your page performance
Enter a URL above to analyze Core Web Vitals — real-user metrics from the Chrome UX Report (28-day field data).
What these metrics mean
Shown before you run an analysis so you know what the report will cover.
LCP (Largest Contentful Paint)
Loading performance. Aim for ≤2.5 seconds.
INP (Interaction to Next Paint)
Interactivity. Aim for ≤200 milliseconds (replaces FID).
CLS (Cumulative Layout Shift)
Visual stability. Aim for ≤0.1 score.