freesabaiKeyboard test
Press the keys of your keyboard. Every key that works lights up on the drawing and stays marked, so a dead or sticky key is easy to find. It runs in your browser, and the keys you press are not sent anywhere.
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- Keys tested
- Most keys held together
Keys not tested yet
Other keys found (not on the drawing)
How to use
- Press "Start the test". While it runs, this page takes every key, so nothing scrolls or opens by itself.
- Press the keys of your keyboard one at a time. A key is dark while you hold it and stays light afterwards to show it was tested.
- A key that does not light up when pressed is not reaching the browser. Press it fully, clean under it, or compare with another program.
- Finish by pressing Esc three times in a row, or press "Stop the test" with the mouse or your finger.
Nothing leaves your device
Everything happens on this page. The keys you press are not sent anywhere, not saved, and gone when you close the page. This tool asks the browser for no permission, and it listens to the keys only while you have pressed "Start the test". The website only counts how many times this page is opened (it never sends a file name, size or content, and you can switch the counting off at the foot of the page; see the privacy policy).
Good to know
- The drawing is a standard full-size keyboard (104 keys). A laptop has no number pad and a few keys fewer: switch off "Show the number pad" so they are not counted as missing (a narrow screen switches it off for you).
- Keys are told apart by their place on the keyboard, not by the letter they type, so it works with a Thai or any other layout. The letter that was typed is shown under the drawing.
- A laptop's Fn key usually sends nothing to the browser, so it will not light up, and some system shortcuts (such as Win, or Print Screen on some computers) are taken by the system before they reach this page.
- "Keys held together" is the most keys you held down at once that the browser still saw. Some cheap keyboards only see 2 to 6 keys in certain combinations (ghosting): try pressing several at once.
- Print Screen on Windows reports only when you release it, and Caps Lock on a Mac reports when it is switched on and off, so these two behave a little differently from the other keys.
- On a phone or tablet this works only with a keyboard that is plugged in or connected by Bluetooth: an on-screen keyboard does not report keys completely.
Report a problem or suggest an idea
Found a problem, or want this tool to do more? Tell us on the feedback page. No sign-up needed.