Device Tests for Keyboard, Mouse, Touch and Controller

These pages show what your hardware is sending to the computer, which only your own hands can test. Hold several keys at once to find how many your keyboard reports together.

12 pages

All 12 tools

More about these tools

Type slowly and watch for a key that arrives twice from one press. Circle the mouse and read its report rate in Hz. Roll the wheel and look for ticks that go the wrong way. Drag a finger across a touchscreen to find strips that do not respond, press every button and stick on a controller, and turn a phone to watch its motion sensors answer. A browser sits between the hardware and the page, so timing figures are estimates, and each page says how close it can get. Nothing you press or type is recorded or sent.

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