Free Switch Joy-Con controller test for drift and buttons
Connect one or both Joy-Con controllers and use the live tester to verify the controls exposed by your operating system.
How to test Nintendo Switch Joy-Con buttons and SL/SR online
Press the face, shoulder, directional, SL/SR, plus, minus, home, capture, and stick-click buttons while the browser highlights each reported input. When testing one Joy-Con horizontally, check that the operating system has paired it in the intended mode.
Online Joy-Con stick drift test for left and right controllers
Release the stick to inspect center offset, rotate through the full range, and repeat after reconnecting. Compare a persistent offset with Nintendo Switch calibration settings because browser and operating-system dead zones can differ from the console.
- Place the Joy-Con on a stable surface before reading center position
- Rotate slowly to find clipped or uneven directions
- Repeat the same test for the left and right Joy-Con
Why left and right Joy-Con mappings look different
A single left Joy-Con, single right Joy-Con, and paired set can expose different buttons and axes. Browser mappings also vary by operating system and Bluetooth stack. A different index is not a fault if the intended physical control still activates and releases consistently.
Joy-Con HD rumble and motion sensor browser limits
The standard Gamepad API does not consistently expose Joy-Con HD rumble, accelerometer, or gyroscope data. If those features are missing here, confirm them in a supported Switch game or console settings before diagnosing hardware.