Keyboard Tester

How to test your keyboard

Click anywhere on the page, then press every key you want to check. Each key turns green the moment it's detected as pressed and stays highlighted so you can see every key you've tested so far. If a key doesn't light up when pressed, it may not be registering with your computer.

What can this detect?

This tool is useful for spotting individual keys that have stopped responding, checking a new or used keyboard before you rely on it, or diagnosing "ghosting" (where pressing several keys at once causes one of them to be ignored due to hardware limitations).

FAQ

Why isn't my key highlighting?
Make sure you've clicked on the page first so it can capture your keystrokes. If a specific key still doesn't respond, it may indicate a hardware issue with that key.

Does this work with all keyboard layouts?
This tool shows a standard US QWERTY layout. Keys will still register correctly even on other physical layouts, though the printed labels may not match your keyboard exactly.