Free tool · Performance
Website Speed Checklist
Work through the fixes that improve Core Web Vitals (LCP, INP, CLS) — images, fonts, scripts, caching and hosting.
/ 21 done
Largest Contentful Paint (LCP)
Interaction to Next Paint (INP)
Cumulative Layout Shift (CLS)
Delivery
Measure
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About Core Web Vitals
Google measures real-user experience with three metrics: LCP (loading), INP (responsiveness — it replaced FID in March 2024) and CLS (visual stability). Learn more on web.dev. Speed is a tie-breaker for rankings, but a big factor in conversions.
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