Keyboard Tester & Keyboard Checker

Use our free online keyboard tester to check your keyboard keys. Detect issues like stuck keys, ghosting, or unresponsive keys with our key tester.

This keyboard checker works with Windows, macOS, Linux, and mobile devices with external keyboards, test keys all in your browser.

Press any key to start the keyboard test!
Esc
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
`
1
2
3
4
5
6
7
8
9
0
-
=
Backspace
Tab
Q
W
E
R
T
Y
U
I
O
P
[
]
\\
Caps Lock
A
S
D
F
G
H
J
K
L
;
'
Enter
Shift
Z
X
C
V
B
N
M
,
.
/
Shift
Ctrl
Alt
Space
Alt
Ctrl

How to Use Our Keyboard Tester

  • Press any key on your keyboard to start the test.
  • Watch the virtual key light up on screen.
  • Enable Hold Mode to keep keys highlighted for diagnostics.
  • Switch to Type Mode to simulate real typing and catch missed strokes.

Want to test for ghosting? Try our  Ghost & Rollover Tester or boost your speed with the  Typing Speed Test .

Frequently Asked Questions About Keyboard Testing

A keyboard tester is an online tool that checks if your keyboard keys work correctly. Our key tester and keyboard checker detect issues like stuck or unresponsive keys.

Yes, our keyboard tester supports Windows, macOS, Linux, and mobile devices with external keyboards, using any modern browser.

Absolutely. Our keyboard tester runs in your browser and does not store or transmit keystrokes.

Press any key, and it will light up on the screen. Use Hold Mode for diagnostics or Type Mode to test typing accuracy with our keyboard typing test.

Yes, our keyboard switch tester works with mechanical, membrane, or laptop keyboards to identify malfunctioning switches or keys.

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