Keyboard Tester
Test your keyboard online for free. Press any key to see it light up, inspect the key code and event, and quickly check for missing or stuck keys.
How to test your keyboard
- Click Start test.
- Press the keys on your physical keyboard.
- Watch the matching keys light up.
- Check the key name, code, event type, and key count.
Test for stuck or broken keyboard keys
A keyboard tester is useful when a key feels broken, intermittent, or stuck. Press and release each key and watch the virtual keyboard. A key that repeatedly fails to register deserves closer inspection.
What do Key, Code, and Event mean?
| Value | What it means |
|---|---|
| Key | The value produced by the key, such as A or Enter. |
| Code | The physical key position identifier, such as KeyA or Space. |
| Event | The browser event, usually keydown or keyup. |
Does it work with laptops and USB keyboards?
Yes. It can test compatible built-in laptop keyboards and many USB or wireless keyboards. The website receives keyboard events from the browser rather than directly connecting to the keyboard.
Privacy
This tool only needs keyboard events to display the test. It does not need to upload what you type to a server. Avoid using this page for passwords or other sensitive information while testing.
Keyboard tester limitations
- Some browser-reserved shortcuts and system-level keys cannot be intercepted by a webpage.
- Some manufacturer-specific keys may not generate standard browser events.
- Keyboard layouts can change what a key produces even when its physical code is the same.
- A browser cannot diagnose every physical keyboard fault. Test intermittent keys in another application too.
FAQ
How do I test my keyboard online?
Start the tester and press your keyboard keys. The corresponding virtual key should highlight and the latest event details will update.
How do I test for a stuck key?
Press and release the suspected key while the tester is running. The virtual key should stop being highlighted after the browser receives the keyup event.
Can I test a laptop keyboard?
Yes. Built-in laptop keyboards and compatible external keyboards can be tested.
Can I test a wireless keyboard?
Yes, as long as the operating system connects it as a keyboard and the browser receives its keyboard events.
Why isn't my key detected?
Some keys are handled by the operating system or browser and are not exposed to web pages. Browser shortcuts and certain special keys may therefore be impossible to test online.