Estimate the refresh cadence observed by requestAnimationFrame. The result reflects this browser session and can be affected by tab visibility, power saving and browser scheduling.
Observed refresh cadence
--Hz
Collecting frame samples…
Measurement status
Frame intervals sampled0
The estimate uses the median recent frame interval. This is more stable than treating a short peak frame count as the monitor's certified hardware refresh rate.
If the number is lower than expected
Keep this tab visible and focused while the measurement stabilizes.
Check the operating system's display refresh-rate setting.
Browser power saving, laptop battery modes and background load can reduce animation cadence.
Use the result as a browser-side estimate, not as proof of one hardware specification.
