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
Audit any URL lab + field data

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.

Want these fixed for your site?

Red badges cost conversions and rankings. I diagnose and fix Core Web Vitals on production sites — measurable before/after, no guesswork.

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