Measure the signal, not the guess
Inspect Switch Pro, Joy-Con and compatible Bluetooth controller inputs in a clean browser-based test bench.
- A, B, X, Y and shoulder buttons
- D-pad or directional input
- Left and right analog sticks
- Supported vibration and connection status
Test conditions matter
Use a wired connection when possible, close other controller software, and press a button after the device is connected.
- Pair the controller before loading the page.
- Press a button to wake the browser API.
- Test Joy-Cons separately if they appear as two devices.
Privacy by design: input data is read and processed locally by your browser. It is not uploaded to a server.