Core Web Vitals checker
LCP, INP and CLS from real Chrome visitors (Google data, last 28 days), on phones and desktops. One URL or up to 10 at once.
No data? The page has little Chrome traffic: we show the whole site. WebVyze's real-user widget measures every page, at any traffic. Want this on every page, every day, with an alert when it gets worse? Run the free site check · See plans
Related guides
Core Web Vitals: what LCP, INP and CLS are and how to improve them
What LCP, INP and CLS measure, the good and poor thresholds, how Google uses these metrics in Search and where to find your site's data.
Lighthouse, CrUX and RUM: which Core Web Vitals data to use
Lighthouse, CrUX and RUM measure different things. Where each comes from, the LCP, INP and CLS thresholds, and which to use to prioritize, debug and track.
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