Input device tests
Verify every key registers, your mouse buttons and scroll work, and your webcam shows a clean picture — all locally, no installs.
Webcam test Check that your webcam works in seconds. Allow access and your live camera feed appears, with a snapshot button plus resolution and frame-rate readout. The video stays in your browser — nothing is recorded or uploaded. Keyboard test Find dead, stuck or ghosting keys in seconds. Press any key and watch it light up on the on-screen layout while the key, code and keyCode appear. Everything runs in your browser — no permission, nothing recorded or uploaded. Mouse test Test every part of your mouse in seconds. Click, scroll and move the pointer to light up each button, see scroll direction, catch unwanted double-clicks and read live cursor coordinates. Everything runs in your browser — nothing is uploaded. Mouse Polling Rate Test Measure how many position updates per second your mouse sends by moving it across the screen. This free tool reads pointer events in real time to estimate your polling rate in Hz. Everything runs locally in your browser - nothing is uploaded. Double-click test Is your mouse registering two clicks when you press once? This double-click test catches that "chatter" — the classic sign of a worn left-button micro-switch. Click the pad with normal single clicks: any interval too short to be intentional is flagged in red and counted, with a live verdict. Everything runs in your browser — nothing is uploaded. Gamepad / controller test Check that your controller works — every button, trigger and thumbstick — using the browser's Gamepad API. See inputs light up in real time and test vibration, all locally with nothing sent to a server.