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Core Web Vitals Monitor

Check real-user LCP, INP and CLS from the Chrome UX Report for any URL or origin.

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About this tool

Rankings use field data, not lab tests. This tool queries the Chrome UX Report (via the PageSpeed API) for your URL and whole origin, showing the real-user distribution of LCP, INP and CLS over the last 28 days and a clear pass/fail verdict per metric.

How to use the Core Web Vitals Monitor

  1. Enter a URL (or just a domain for origin-level data).
  2. Compare page-level vs origin-level vitals.
  3. Prioritize whichever metric fails: LCP → loading, INP → interactivity, CLS → layout stability.

Frequently asked questions

What are the passing thresholds?

LCP ≤ 2.5s, INP ≤ 200ms, CLS ≤ 0.1 at the 75th percentile of real visits.

Why is there no data for my URL?

Low-traffic pages lack CrUX samples; check the origin-level result instead.

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