FPS Test
See the frame rate this browser page is delivering right now.
FPS Test measurement
Warming upMeasures automatically while this page is visible.
Current FPS1 s rolling window
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Recent sampled low—
Recent sampled high—
Median frame time—
The large value is the latest one-second estimate. The graph keeps recent history, so an older drop can remain visible after the current FPS recovers.
FPS measurement is warming up.
What this FPS test measures
The test observes requestAnimationFrame delivery for this page. It is useful for seeing the browser page's current frame cadence and recent drops, but it cannot read FPS from another game or application.
Why the number can change
Browser work, background activity, power-saving behavior, display changes, and a hidden tab can all affect observed frame delivery. When the page becomes hidden, the measurement is discarded and starts with a fresh warmup when sampling resumes.