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Core Web Vitals100% Free & Client-SideReal-Time Computation
Core Web Vitals Checker
Evaluate Google Core Web Vitals: LCP (≤2.5s), INP (≤200ms), and CLS (≤0.1).
Google Assessment Status
Passes Google Core Web Vitals AssessmentLCPGood
1950ms
Measures loading performance. Target: ≤ 2.5s
INPGood
140ms
Measures responsiveness to user interactions. Target: ≤ 200ms
CLSGood
0.04
Measures visual stability during render. Target: ≤ 0.1
How to Use Core Web Vitals Checker
1Step 1
Enter observed LCP, INP, and CLS scores.
2Step 2
Review Good / Needs Improvement / Poor rating badges.
3Step 3
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.