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Keyboard Input Diagnostic

Free Keyboard Test Online

Press keys on your physical keyboard and watch a virtual layout respond in real time so you can spot dead, sticky, or inconsistent inputs.

Useful after spills, repairs, travel, or whenever a shortcut suddenly stops working.

ChecksRealtime key response
Best forLaptop and USB keyboards
OutputPressed map and event log

Keyboard events are live

Press keys on your physical keyboard and watch the matching virtual keys respond below. This page uses keyboard events, so no browser permission is required.

Tested keys0

Unique hardware codes seen this session

Currently pressed0

Useful for modifiers and rollover checks

Layout noteCode-based

Some printed legends differ across regional keyboards

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

Recent Key Events

Press any key to start the event log. Modifier keys like Shift, Control, Alt, and Meta are especially useful for shortcut troubleshooting.

How To Use It
  1. Focus the page and start pressing keys on your keyboard.
  2. Watch the virtual layout highlight the keys you press.
  3. Use the recent key log to verify modifiers and special keys.
Troubleshooting
  • Keyboard layouts vary by country, so the highlighted code may still be correct even if the printed legend differs.
  • If shortcuts fail in another app but work here, the issue is often app-specific rather than hardware-specific.
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