Free tool
Real-world speed
Google measures how fast your pages feel for real Chrome visitors: display, response to clicks, stability. These Core Web Vitals count in its ranking. We fetch them for you, on phones and computers.
The three signals Google uses
LCP
Display
The main content should show within 2.5 seconds.
Poor beyond 4 seconds.
INP
Response
The page should react to a click within 200 milliseconds.
Poor beyond half a second.
CLS
Stability
Content should not jump: 0.1 or less.
Poor beyond 0.25.
Questions
Why “no data”?
Google only publishes these measurements for sites with enough Chrome visits. For a smaller site, we run a simulated test instead.
Why 75% of visits?
That's Google's rule: a page passes if at least 3 visits out of 4 are good. It covers slow phones and weak networks, not just the lucky ones.
