Keyboard Tester
Press any key to test that every key on your keyboard works.
Click anywhere on this page, then start pressing keys. This tester captures keys like Tab, Space, and the arrow keys while it has focus so they don't scroll the page.
Last key pressed
—
Press a key to see its details here.
Stuck key warnings
None
Key features
Buying a used keyboard, troubleshooting a key that feels off, or just want to confirm a new board works before the return window closes? Press any key on your physical keyboard and watch the matching key on the on-screen layout light up. Keys turn green the moment they register, so a full pass across the board tells you at a glance which ones — if any — didn’t respond.
Everything happens locally using standard keyboard events in your browser. No keystrokes are logged, stored, or sent anywhere — closing or refreshing this page clears the test completely.
How to use
Click anywhere on this page
Make sure the page has focus, then start pressing keys on your physical keyboard.
Watch keys light up green
Each key on the on-screen layout turns green the instant it registers a keydown event.
Check for anything left gray
Once you've pressed every key, anything still gray didn't register — try it again to rule out a missed press.
Frequently asked questions
Why doesn’t this affect things like closing the tab or entering fullscreen?
Browsers reserve certain shortcuts (closing a tab, opening a new one, toggling fullscreen, opening dev tools) at the browser or OS level so that no webpage can override them. This tool still detects and displays those keypresses — it just can’t and shouldn’t change what they normally do.
What does 'possible stuck key' mean?
If a key is held down continuously for more than 5 seconds without a matching key-up event, it's flagged as possibly stuck. That can point to a real hardware fault, or it might just mean you were still holding it down — release it and press it again to clear the warning.
Does this work for laptop keyboards without a numpad?
Yes. The on-screen layout matches a standard keyboard without a numpad, since that's what most laptops have. If you press a numpad-specific key, it won't show up on the layout, but it will still appear in the "Last key pressed" panel.
Is my keystroke data stored anywhere?
No. Every keypress is handled locally with standard browser keyboard events — nothing is logged, transmitted, or saved. Refreshing or closing this page clears the test completely.