PageSpeed & Core Web Vitals
FreeThe PageSpeed & Core Web Vitals checker runs Google PageSpeed Insights on any URL and presents the performance score plus lab Core Web Vitals — Largest Contentful Paint, Total Blocking Time and Cumulative Layout Shift — in a clean report.
How to use the PageSpeed & Core Web Vitals
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1
Enter a URL
Paste the page you want to test.
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2
Pick a device
Choose mobile or desktop.
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3
Run the test
Click Run PageSpeed test — analysis can take 20–40 seconds.
Features
- Powered by Google PageSpeed Insights
- Mobile and desktop testing
- Reports Core Web Vitals (LCP, TBT, CLS)
- Clear performance score out of 100
When to use it
- Benchmark a page’s loading performance
- Diagnose layout shift and slow paint
- Compare mobile vs desktop speed
Frequently asked questions
Core Web Vitals are Google’s page-experience metrics: Largest Contentful Paint (loading), Interaction to Next Paint / Total Blocking Time (responsiveness) and Cumulative Layout Shift (visual stability).
Yes. Core Web Vitals are part of Google’s page-experience signals and can influence rankings, especially as a tie-breaker between pages of similar relevance.
A score of 90 or above is considered good, 50–89 needs improvement, and below 50 is poor. Mobile scores are typically lower than desktop.
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