Free tool · Technical

Core Web Vitals Grader

Grade your LCP, INP & CLS against Google's thresholds. No login, no limits, everything runs in your browser.

LCP (seconds)Good ≤ 2.5 sINP (milliseconds)Good ≤ 200 msCLS (score)Good ≤ 0.1

Get your field values from PageSpeed Insights or CrUX.

Enter LCP, INP, and CLS into the grader.

Work through the prioritized fixes for any failing metric.

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