Keyboard Tester: Test Every Key
Press any key and watch it light up. This online keyboard tester shows the key name, code and key code for every press, so you can find dead or sticky keys, check a new keyboard, or look up key codes for your code.
- Shows key, code and keyCode
- Marks keys you pressed
- Works with any keyboard
- Nothing is recorded
Click anywhere on the page and press keys. The page blocks the usual action of each key (scrolling, tab switching) while you test.
Other keys:
How to use
- Click on the page, then press any key on your keyboard.
- The matching key on the screen lights up while you hold it and turns light blue after you let go.
- Read its key, code and keyCode in the table under the keyboard.
- Press every key. Any key that never lights up may be dead, stuck or blocked by your system. Use Reset to start over.
How to find a broken key
Press each key once and check that it lights up. If a key does not respond here, first clean it, then check that your operating system or a keyboard utility is not remapping it. Keys that appear twice for one press, or do not release, usually point to dirt or a failing switch. On laptops, function keys may need the Fn key held to send F1 to F12.
Key, code and keyCode explained
key is the character the key produces (it changes with layout and Shift). code names the physical key and does not change with layout, so it is best for games. keyCode is an older number that is still shown for compatibility. Looking for a faster way to practise? Try our typing speed test.
Frequently asked questions
Is my typing recorded?
No. Key presses are only shown on this page and never leave your browser.
Why does a key not light up?
It may be dead, dirty or remapped. Some keys, such as the Windows or Fn keys, are handled by the system and may not reach the browser.
Does it work with mechanical, wireless and laptop keyboards?
Yes, any keyboard the browser can see. Try the on-screen layout: it is a standard full-size layout, so some of your keys may be placed differently.
Can I test several keys at once?
Yes, you can hold many keys together. Some keyboards cannot report all combinations at once (ghosting), which is a hardware limit.