Kontrolit Chrome User Experience Report (CrUX) Field Data Checker

See real-world Core Web Vitals (last 28 days) for any page or site. Choose desktop or mobile, then fetch field data for LCP, INP and CLS.

 Tip: test your homepage and a competitor to benchmark real user experience.

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Enter a page or site

Results reflect the last 28 days of real user visits (Chrome UX Report). If a page is new or low-traffic, field data may be unavailable.

What you’re seeing (plain English)

  • LCP — Largest Contentful Paint (good ≤ 2.5s)
    How quickly the main content appears. Improve by compressing hero images, inlining critical CSS, and deferring non-critical JS.
  • INP — Interaction to Next Paint (good ≤ 200ms)
    How fast the page responds to taps/clicks. Improve by reducing long JS tasks, removing unused scripts, and delaying non-essential third-party code.
  • CLS — Cumulative Layout Shift (good ≤ 0.10)
    Visual stability during load. Improve by reserving width/height for images/embeds and avoiding late-loading banners above content.

Field data is aggregated and anonymised. If there isn’t enough real traffic yet, you’ll see a message explaining why.