Keyboard Tester
Press any key - if it lights up here, the key works. Great for finding dead keys.
Press any key to begin…
This tool lets you press keys on your keyboard and see them register visually, with a history of recently pressed keys - useful for testing whether all keys on a keyboard actually work correctly, especially useful when buying a used keyboard or diagnosing a suspected faulty key.
Frequently asked questions
Common reasons: checking a new or used keyboard for dead/faulty keys, diagnosing a key that seems unresponsive, or verifying all keys work correctly after a spill or repair.
It typically identifies and displays the specific key pressed, so you can confirm each individual key registers correctly rather than just generic keyboard activity.
The key history log can help you notice if a key is registering repeatedly without you pressing it multiple times, which would suggest a stuck or faulty key.