Click here, then press any key.
How to use the keyboard tester
- Click the keyboard area above so the page has focus.
- Press every key, one at a time. Each key turns green once it has been received.
- Hold a key down: it stays lit while it is pressed and goes back when you release it.
- Any key that stays grey after you press it is not working, or is taken by the system before the browser sees it.
The tester reads the physical key position, so it works on any language layout: a French AZERTY keyboard lights up the same positions as an English QWERTY one. Nothing you type is stored or sent anywhere.
Common keyboard problems
- A key does nothing: try another USB port or fresh batteries; for a laptop, restart and test again.
- A key repeats or sticks: clean under it with compressed air; crumbs and dust are the usual cause.
- Wrong characters appear: check the keyboard language in your system settings.
- The number pad does not work: press Num Lock.
All keys working? Now test how fast you type with them.
Take the typing test →Questions
How do I test my keyboard?
Open this page, click once on it, then press each key. A key turns green when the browser receives it and lights up while you hold it down. Keys that stay grey after you press them are not reaching the computer.
Why do some keys not light up?
A few keys are handled by the computer before the browser sees them: often Fn, Print Screen, the Windows or Command key with other keys, and media keys. If letter or number keys stay grey, the key itself, the cable or the keyboard driver is the likely problem.
How can I tell if a key is stuck?
A stuck key stays lit after you let go, or keeps repeating in the "last key" box. Try cleaning around it with compressed air before replacing the keyboard.
Does this work for laptop keyboards?
Yes. The layout shown is a standard full-size keyboard, so a laptop may not have every key, but each key it has will light up when pressed.