Estimate the refresh rate currently delivered to this browser tab and inspect frame timing stability with a short animation test.
The test samples consecutive animation frames, reports the median refresh rate, frame interval, timing variation, and likely dropped frames, then lets you repeat the measurement in full screen.
The test samples consecutive browser animation frames and uses the median interval to reduce the effect of occasional delays. Timing variation describes how consistently those frames arrive.
Variable refresh rate, power saving, background tabs, browser rendering load, and other open applications can change the result. Keep this tab visible and repeat the test when the system is idle for the clearest estimate.
Related tools: Monitor Test · Screen Resolution · Screen Ruler