Output
Animation FPS; frame intervals, milliseconds
Photograph a moving frame marker using a long exposure to inspect gaps.
Frame Skipping Test · At a glance
Quick answer: Photograph a moving frame marker using a long exposure to inspect gaps. A camera image may show gaps that warrant investigation.
The test loads when you open it. Device access is requested only after you choose to start.
Detailed guide
Animation FPS; frame intervals, milliseconds
Visible tab and animated workload
requestAnimationFrame timestamps
Runs on your device; no tool-result upload
Frame cadence is estimated from requestAnimationFrame timestamps. Browser FPS may be capped by refresh rate, power settings or background throttling. It is not a native-game FPS prediction.
A camera image may show gaps that warrant investigation. Browser timestamp variation alone cannot prove that the physical panel skipped a frame.
Use stable camera support and consistent exposure. Too short or too long an exposure can make the sequence hard to interpret.
A frame sequence may reveal gaps in a camera photo, but software timing alone cannot prove a monitor is displaying or skipping physical frames.
No. It cannot observe emitted frames from the physical panel. A suitable camera method or external instrument is required.
Start the test and keep the tab visible. For FPS, adjust workload. For frame skipping, photograph the moving frame sequence with a long exposure.
No. Open the interactive tool above in a modern browser. The instructions and explanations are available even with JavaScript disabled; running a test needs JavaScript.
Power settings, background tasks, browser scheduling, operating-system input processing and device settings affect measurements. Compare repeated attempts with identical settings rather than the single highest score.