Why mapping checks matter
A button can work electrically while still appearing under an unexpected index. That matters when an emulator, accessibility profile, adapter, or game expects a specific layout. The mapping page makes the browser index visible beside the standard label and raw value.
For non-standard controllers, use the raw panel and report output. A clear mapping record is often more useful than saying a button is wrong.
- Press each physical button once and record the browser index.
- Compare standard labels with raw indexes.
- Watch for buttons that remain pressed after release.
- Use the report when sharing remap evidence.
Browser and hardware limits
Gamepad API support, haptic feedback, MediaRecorder, and WebHID are exposed differently across Chrome, Edge, Firefox, Safari, Linux, mobile browsers, USB, Bluetooth, and third-party drivers. For Gamepad Button Mapping Test, treat that limit as part of gamepad button mapping test guidance rather than as a separate verdict.
A missing feature in the browser does not prove that the controller is damaged. Use the live readings as diagnostic hints and compare results across connection methods when possible. On this Gamepad Button Mapping Test page, compare that note with the live module that matches the article steps, the browser readings they depend on, and the practical decision the reader needs to make.
Gamepad button mapping test workflow
A gamepad button mapping test is useful when labels and physical buttons disagree. Press one control at a time, write down the raw index, then compare the browser label with the label inside your game or emulator. The gamepad button mapping test is especially helpful for Nintendo-style layouts, adapters, and older PC pads.
Do not remap everything after one surprising result. A gamepad button mapping test should first confirm whether the same index appears over USB and Bluetooth. If the gamepad button mapping test changes by connection mode, the adapter or driver may be changing the layout before the game sees it.
- Use the gamepad button mapping test before editing emulator profiles.
- Record one button per line.
- Repeat the gamepad button mapping test after switching connection mode.