Which test for which problem
- Keyboard Test – a key does not respond, or you want to see which keys are registering.
- Mouse Test – a button misses clicks, double-clicks by itself or the scroll wheel acts up.
- Click Speed Test – measure how many clicks per second you can do.
- Gamepad Tester – check buttons, triggers and sticks, and spot stick drift.
- Touch Screen Test – find dead zones and see how many fingers register at once.
- Pen Pressure Test – see whether your stylus or tablet pen reports pressure.
How it works and a quick tip
Everything runs locally in your browser. The tests only read input events from the page, and nothing you press, click or draw is sent anywhere.
For a fair result, plug the device in directly and close other programs that remap keys or buttons. For a gamepad, press any button once so the browser detects it. If a fault shows up on every device, suspect the driver or a setting rather than the hardware.
If a key or button fails in only one program, check that program's settings first, not the device.