RankKitWebsite Speed Test & Core Web Vitals
Real Google PageSpeed Insights data: scores, Core Web Vitals and the biggest speed fixes.
About this tool
Page speed affects rankings and conversions. This tool runs Google Lighthouse through the PageSpeed Insights API and shows scores, lab metrics, real-user Core Web Vitals when available, and a ranked list of fixes.
How to use the Speed & Core Web Vitals
- Enter the URL.
- Choose Mobile or Desktop.
- Wait 15–40 seconds for Lighthouse.
- Fix the top opportunities first.
Frequently asked questions
What are Core Web Vitals?
LCP (loading), CLS (visual stability) and INP (responsiveness): Google's page-experience metrics.
Why do scores change between runs?
Lab tests vary with network and server load. Look at trends and the real-user data.
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