Paused
Refresh Rate Test
An in-browser estimate of on-screen frame timing.
This test uses continuous motion. It stays paused until you start it, and you can stop it at any time.
Speed320 px/s
Frame timing is measured in-browser and reported as an estimate — not a lab-grade refresh-rate measurement.
Brightness100%
Simulated dimming — browsers can't raise a panel's backlight.
Shortcuts: F fullscreen · C hide controls · ? help
Ad slot — below the tool, never over it