Page Speed Checker

Measure LCP, CLS and TBT with Google’s Lighthouse engine on mobile or desktop, and get the fixes that save the most time.

Why it matters

Slow pages lose visitors and rank lower, especially on mobile. Core Web Vitals are part of Google’s page experience signals.

How to use the Page Speed Checker

  1. Enter a URL Type the page or domain you want to check.
  2. Run the check We fetch it live, the way a crawler does.
  3. Fix what you find Each issue comes with a plain-English fix.

Frequently asked questions

Why do scores change between tests?

Lab tests vary slightly with network and server load. Look at trends and the biggest opportunities rather than single points.

How long does a test take?

Usually 20–60 seconds, because Google loads the page in a real browser.