INPUT DIAGNOSTICS / 01

KEYTEST

A browser-native keyboard and mouse bench. Press anything, hold multiple keys, and inspect exactly what your device sends.

Speed typing →

KEYBOARD MATRIX

Choose your physical layout. Green means detected at least once.

Layout
Esc
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
PrtSc
ScrLk
Pause
`
1
2
3
4
5
6
7
8
9
0
-
=
Backspace
Ins
Home
PgUp
Num
/
*
-
Tab
Q
W
E
R
T
Y
U
I
O
P
[
]
\
Del
End
PgDn
7
8
9
+
Caps
A
S
D
F
G
H
J
K
L
;
'
Enter
4
5
6
Shift
Z
X
C
V
B
N
M
,
.
/
Shift
Up
1
2
3
Enter
Ctrl
Win
Alt
Space
Alt
Win
Menu
Ctrl
Left
Down
Right
0
.

MOUSE BENCH

Buttons, wheel and movement

L
R
M
4
5
0 / 0
WHEEL
0, 0POSITION0 pxDISTANCE0 px/sSPEED

Some OS-reserved shortcuts and media keys are intercepted before the browser can see them. F5, F12, Ctrl+W, and Ctrl+R intentionally retain their browser behavior.

KEYTEST GUIDE

Online keyboard and mouse tester

KeyTest shows how your browser detects key presses, mouse buttons, scrolling, and pointer movement. Use it after buying or cleaning a device, or when you need to diagnose an unreliable key.

  • keyboard tester
  • key test
  • mouse tester
  • keyboard check
  • mouse test
Test your typing speed →