Keyboard Tester
Test every key on your keyboard. Press any key to see it highlight.
How to Use the Keyboard Tester
Click anywhere on the page to focus it, then press any key on your keyboard. The corresponding key lights up on the on-screen layout. Press every key you want to test — highlighted keys stay lit so you can see which ones you've tested.
What to Check For
Stuck Keys
A key that highlights without being pressed — or one that won't un-highlight after you release it — is physically stuck or has a damaged switch. This is common on keyboards that have had liquid spilled on them.
Dead Keys
If a key doesn't highlight when pressed, either the switch has failed or the key isn't being recognised by your operating system. Try pressing it in a text editor to confirm.
Double-Triggering
Mechanical keyboard switches can develop "chatter" — where one physical press registers as two keystrokes. This shows up as typing errors that are hard to explain. Test by pressing keys slowly and watching the highlight.
Layout Differences
If you've switched between keyboard layouts (e.g. QWERTY to Dvorak, or UK to US), this tester helps you verify which physical key maps to which label in your current OS layout.
Is It Safe?
Yes. All key detection happens locally in your browser using JavaScript event listeners. No keystrokes are recorded, transmitted, or stored anywhere.
Ready to Type?
Once your keyboard is confirmed working, take a 1-minute typing test to see your current WPM, or try a targeted practice session to work on specific keys.