Core Web Vitals — Live Checker

These numbers are measured on this exact page session, in your browser, with no sign-up. Interact, scroll, and type to populate INP. Or audit any URL via Google PageSpeed Insights.

Measuring this page Measuring…

Values update as the browser's PerformanceObserver fires. INP is approximated from this session's interactions — click, scroll, and type to populate it.

  • LCP …
    —
    Largest Contentful Paint
    Good ≤ 2.5s · Poor > 4s
  • INP …
    —
    INP (approx, this session)
    Good ≤ 200ms · Poor > 500ms
  • CLS …
    —
    Cumulative Layout Shift
    Good ≤ 0.1 · Poor > 0.25
  • TTFB …
    —
    Time to First Byte
    Good ≤ 800ms
  • FCP …
    —
    First Contentful Paint
    Good ≤ 1.8s
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Runs a full, third-party audit on Google PageSpeed Insights in a new tab — including real-world field data from the Chrome UX Report when available.

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