Tests
Keyboard Test
Press physical keys and inspect code, label, modifiers, repeat events, and simultaneous input.
Private by designProcessing happens locally in this browser. Device streams and raw readings are not uploaded.
What this test checks
How to use this test
Start test mode, press and release keys, try modifiers and combinations, then press Escape to leave test mode.
What the results mean
A detected key confirms that the browser received its event; it is not an electrical certification of the keyboard.
Troubleshooting
Check the keyboard connection and layout, disable conflicting shortcuts, and compare another browser or USB port.
Browser limitation
Operating-system shortcuts, the Fn key, and some reserved combinations may never reach the page.