Web Vitals Simulator
Estimate Core Web Vitals scores
LCP
Largest Contentful Paint measures loading performance. Target: < 2.5s
Target: < 2.5s
FID
First Input Delay measures interactivity. Target: < 100ms
Target: < 100ms
CLS
Cumulative Layout Shift measures visual stability. Target: < 0.1
Target: < 0.1
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