Keyboard Tester

このツールについて

Verify that all keys on your keyboard work correctly. Click the on-screen capture area and press any key — it lights up green on the visual QWERTY layout and stays highlighted so you can see at a glance which keys have been tested. A real-time details panel shows the full KeyboardEvent properties: key, code, keyCode, charCode, which, altKey, ctrlKey, shiftKey, and metaKey. A scrollable event log records every keydown and keyup with timestamps and modifier keys. Function keys F1–F12, modifier keys, special keys, and arrow keys are all included. Use the Reset button to clear all tested keys and start over.

使い方

1. 1 Click inside the keyboard area to give it focus.
2. 2 Press each key you want to test — it lights up green.
3. 3 Check the Event Details panel for full KeyboardEvent properties.
4. 4 Scroll the Event Log to review all keydown and keyup events.
5. 5 Use Reset All to clear tested keys and test again.

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