Runs in your browser. Nothing is uploaded.
Refresh Rate Test
Time the frames the browser is painting and match them to a common panel rate.
Keep this tab in front. Battery saver and a busy page can paint slower than the panel.
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Press start
Dropped
0
Stability
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More tests
What it measures
Hertz
The typical gap between animation frames, matched to a common panel rate.
Stability
How many frames stayed close to that gap, and how many were late.
Questions
Why is the number below my monitor setting?
A busy page, battery saver, or a browser cap can paint slower than the panel. Close other tabs and keep this page in front.
Does this change the display mode?
No. It only times the frames the browser is already drawing.