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Refresh Rate Tester

Measure the frame rate this display is delivering.

— fps

Worked example

The number is how many animation frames the browser painted in the last half second, scaled up to a second. A 60 Hz panel usually sits near 60.

FAQ

Is this the monitor’s rated refresh?
It is the frame rate the browser is achieving on this page. A busy tab, or a battery saver, can sit below the panel’s rating.
Why does it move around?
It is recounted every half second. Small swings of a frame or two are normal.
What is the moving bar for?
It is a visual check that frames are arriving. The number is the measurement.