Press every key on your keyboard and watch it light up here. A fast, free way to find dead keys, ghosting and key chatter, right in your browser. No download, no sign up, nothing you type leaves this page.
Test mode: click, then press keys
Not testedPressedWorksPossible chatter
Key history
No keys pressed yet
0
Keys tested
0
Keys left
0%
Complete
0
Keys held now (ghosting)
none
Last key pressed
0
Total presses
0:00
Test time
-
Most pressed key
Click on this page once, then press and hold keys together to check rollover and ghosting.
A note on system keys: without full screen, the Windows key, Print Screen and shortcuts like Win + Shift + S are caught by Windows itself before your browser can see them, so their menu or tool opens and the press cannot register here. To test even these keys, press the Full screen test button above: in Chrome and Edge, full screen with keyboard lock gives even these keys to this page. If a system menu still opened, your key works, and you can click such a key on the screen above to mark it tested.
All keys tested. Your keyboard passes this test.
How to test your keyboard
1. Choose your layout
Select the layout that matches your keyboard, for example US, German QWERTZ, French AZERTY, Japanese JIS, Mac or Chromebook. The keys on screen will change to match.
2. Press every key
Click on this page first so your browser is listening, then press each key once. Keys turn blue after they respond. Press several keys together to check ghosting.
3. Read the results
Keys that never light up may be dead. Keys flagged for chatter may be registering one press as two. The numbers below the keyboard sum it up.
What the results mean
Dead key. If a key stays unlit after a firm press, the switch or the key itself is likely faulty. Try the same key after cleaning under it, and test on another computer if you can, before you replace the keyboard.
Ghosting. When you hold several keys and a new key stops registering, your keyboard has hit its rollover limit. The counter above shows how many keys yours accepts at once. Gamers and fast typists feel this most.
Key chatter. A worn switch sometimes sends two signals for one press, so one letter appears twice. This tester watches for repeats that arrive too fast to be human and flags the key in your report.
Questions people ask
Is this keyboard tester free?
Yes. It runs entirely in your browser, there is no download, no account and no cost.
Can I hear a sound when I press a key?
Yes. Pick a sound from the Keyboard sound list above the keyboard. Every name there is a real switch sound, and set the volume with the slider next to the test mode line, slide it to zero for no sound. With sound on, every key press makes a short click, so you can hear each press register as you test. Your choices are saved on your device.
Why do the Windows key and Print Screen not register?
Without full screen, Windows catches these keys and their shortcuts, like Win + Shift + S, before the browser receives them, so the Start menu or the snipping tool opens instead. Use the Full screen test button above the keyboard: in Chrome and Edge, full screen with keyboard lock hands even these keys to this page, so they register here and can be tested. If a system menu still opened, the key itself works, and you can click such a key on the screen to mark it tested.
Does the site record what I type?
No. The page only listens to key presses while you are on it, to light up the matching key. Nothing is sent anywhere, and the test resets when you leave.
Why does one key not light up?
Some keys are limited by the browser or the operating system, for example the Fn key on many laptops and some system shortcuts. If a normal letter, number or punctuation key does not light up, that points to a hardware problem.
Can I test a Mac or Chromebook keyboard?
Yes. Choose the Mac or Chromebook layout above. The tester shows the Command, Option or Search keys in the right places.
My keyboard is not in English. Can I test it?
Yes. Layouts include German QWERTZ, French AZERTY, Spanish and Japanese JIS, with more layouts being added. The physical position of each key is what matters, the tester checks the signal from every position.