Core Web Vitals Checker
Evaluate your website against Google's Core Web Vitals metrics — LCP, FID, CLS, INP, and TTFB — which are direct ranking factors in Google Search. Each metric has a color-coded status (Good/Needs Improvement/Poor) and specific recommendations for improvement. Core Web Vitals are part of Google's Page Experience signals and affect rankings across both mobile and desktop searches.
Core Web Vitals Checker
Check all Core Web Vitals metrics and get improvement recommendations.
How to Use Core Web Vitals Checker
- 1Enter your website URL
- 2Click Check Core Web Vitals
- 3Review each metric score
- 4Check recommendations for failing metrics
- 5Prioritize fixing Poor rated metrics first
Your Privacy is Protected
Core Web Vitals Checker runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
Frequently Asked Questions
What is LCP?
Largest Contentful Paint measures how long it takes for the largest image or text block to load. Good LCP is under 2.5 seconds.
What is CLS?
Cumulative Layout Shift measures visual instability — how much page elements unexpectedly shift during loading. Good CLS is under 0.1.
Why Use This Tool?
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