Core Web Vitals Checker
Evaluate Google Core Web Vitals: LCP (≤2.5s), INP (≤200ms), and CLS (≤0.1).
Measures loading performance. Target: ≤ 2.5s
Measures responsiveness to user interactions. Target: ≤ 200ms
Measures visual stability during render. Target: ≤ 0.1
How to Use Core Web Vitals Checker
Enter observed LCP, INP, and CLS scores.
Review Good / Needs Improvement / Poor rating badges.
Read targeted debugging guidance to pass Google's ranking assessment.
Frequently Asked Questions
Q.What replaced First Input Delay (FID)?
Interaction to Next Paint (INP) replaced FID as an official Core Web Vital in March 2024, measuring full page responsiveness during interactions.
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