How the test works
See which mouse buttons and wheel actions your browser detects. Press every mouse button; detected inputs light up immediately.
How the score is calculated
The score is the number of distinct mouse buttons or wheel directions the browser recognized during the run.
Measurement limits
Use this utility to verify that each physical mouse control reaches the browser as the expected button event. Test left, middle, right, side buttons and wheel actions one at a time. It is useful after remapping software changes or when diagnosing a switch that sometimes fails to register.
Sources and editorial notes
The method uses Pointer Events, Keyboard Events and the monotonic Performance API clock. Content is reviewed by CPS-TEST.ONLINE editors.
Published: 2026-07-11 · Updated: 2026-08-12 12:16:16