Tools / Development

Keyboard Event Tester

Press any key to see its key, code, keyCode, and modifier values in real time.

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Waiting for key input...

Press any key.

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Tool info

Category Development

Processing Directly in your browser

Data storage Not stored

Updated 2026-08-24

How to use

Press any key on your keyboard.

The key, code, keyCode, and which values appear instantly.

See whether modifier keys like Ctrl, Alt, Shift, or Meta were held down.

Compare your last 20 key presses in the history table.

FAQ

자주 묻는 질문

Q1. What can this tool check?

It shows the key, code, keyCode, which, modifier keys (Ctrl/Alt/Shift/Meta), and repeat values from the browser's KeyboardEvent the moment you press a key.

Q2. What's the difference between key and code?

key represents the actual character produced, which can depend on keyboard layout or language settings, while code represents the physical key position and stays the same regardless of layout.

Q3. Why are keyCode and which marked deprecated?

keyCode and which are legacy APIs that modern web standards recommend replacing with key and code. This tool still shows them since they're useful for debugging older code.

Q4. Is my key input sent to a server?

No. All keyboard event handling happens entirely in your browser and is never sent to or stored on a server.

Q5. Can I test game controllers or special keyboards?

You can test any standard keyboard input the browser recognizes. Gamepad input requires a separate Gamepad API and isn't supported by this tool.

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