WebHID · Controller Diagnostic

Switch Controller Tester

Not connected

Test every button, the D-pad and both sticks right in your browser — with instrument-grade tools for finding stick drift. Reads the controller via WebHID, so even clones the Gamepad API can't see will work.

No device selected.

Connect a controller to begin

Click “Connect controller” above and pick your Switch controller in the prompt. Every button lights up live, and you can run the drift tools on both sticks.

01 Analog sticks

🟢 clean · 🟡 small offset · 🔴 drift
Left stick
Right stick
Keep the controller still. Yellow box = how far the stick wandered.

02 Buttons & D-pad

Connect a controller to see the buttons.

03 Raw report

0 Hz