loot.tools

Keyboard Checker

Press keys on your keyboard and see them highlight instantly. Useful for testing key switches or finding stuck keys.
Tech
Pressed keys flash and stay highlighted.
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
A
S
D
F
G
H
J
K
L
;
'
Enter
Shift
Z
X
C
V
B
N
M
,
.
/
Shift
Ctrl
Cmd
Alt
Space
Alt
Cmd
Menu
Ctrl
PrtSc
ScrLk
Pause
Ins
Home
PgUp
Del
End
PgDn
↑
←
↓
→
Num
/
*
-
7
8
9
+
4
5
6
1
2
3
Enter
0
.

What this tool does

Press any key on your keyboard and it lights up on the virtual keyboard layout. The tool captures the key code, key name, and event details for every keypress. It's a quick way to verify that every key on your keyboard is registering correctly.

When you'd use this

  • Testing a new mechanical keyboard to make sure every switch works
  • Diagnosing stuck or unresponsive keys
  • Checking that modifier keys (Shift, Ctrl, Alt) register properly
  • Verifying keyboard layouts after remapping keys
  • Testing custom keyboard firmware

How keyboard events work

When you press a key, the browser fires three events: keydown (key pressed), keypress (character input, deprecated), and keyup (key released). Each event includes a key (the character), code (the physical key), and modifier state (whether Shift, Ctrl, Alt, or Meta were held). This tool shows you exactly what your browser receives for each keypress.