PREPARE
Before you start
- 1Keep this tab visible and focused.
- 2Close heavy background work.
- 3Disable battery saver if appropriate.
MOTION · 10 sec
Refresh Rate Estimate
Estimate the browser animation rate and inspect frame-time stability.
BROWSER ANIMATION ESTIMATE
…HzSampling…
Frame time—ms
Stability—%
Samples—
The result reflects browser animation timing. It is not an exact hardware measurement.
OBSERVE
What to look for
- An estimate close to your selected OS setting.
- A stable sample without repeated stalls.
- Warnings when the page loses focus.
MEASUREMENT BOUNDARY
What this test cannot prove
This is a requestAnimationFrame estimate, not a hardware measurement or proof of panel refresh.