Keyboard Tester
Test every key on your physical keyboard and detect its layout.
Detected layout
Unknown
Keyboard API unavailable — layout detection skipped.
Coverage
0 / 77
Press every key to verify it registers.
Held simultaneously
0
Hold many keys at once to test n-key rollover.
Click here, then press any key.
Esc
F1
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F11
F12
`
1
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0
-
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⌫
Tab
Q
W
E
R
T
Y
U
I
O
P
[
]
\
Caps
A
S
D
F
G
H
J
K
L
;
'
↵
Shift
Z
X
C
V
B
N
M
,
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/
Shift
Ctrl
⌘
Alt
Space
Alt
⌘
Ctrl
←
↓
↑
→
About This Tool
Diagnose stuck or unresponsive keys, verify n-key rollover, and identify your keyboard's physical layout (QWERTY, AZERTY, QWERTZ, Dvorak, Colemak) using the modern Keyboard API. Optionally pair a USB or Bluetooth keyboard via WebHID to inspect vendor and product IDs — useful for QMK and custom mechanical keyboard owners.