Gamepad API tester
Inspect every signal your browser can see.
A fast live view for developers, players, and repair checks—with local processing and raw values.
Follow the four guided steps; CTRLCHK will tell you exactly what to do and when each stage is complete.
Device
No controller detected
Waiting
Live controller input visualization
Connect a controller over USB or Bluetooth, then press any button to begin.
Standby—
Live readout
Every axis and button, measured in real time.
Nothing untouched is treated as a failure. Values update at display refresh rate.
LX+0.00
LY+0.00
RX+0.00
RY+0.00
L radial0.0%
R radial0.0%
L2N/AUnmapped
R2N/AUnmapped
Buttons observed0 / 0