See which keys register when you press multiple at once.
Try pressing common gaming key combinations (like WASD + Shift + Space) at the same time. Pressed keys are highlighted below — if not all the keys you expect light up at once, your keyboard has "ghosting" for that combination.
1
2
3
4
5
Q
W
E
R
T
A
S
D
F
G
Z
X
C
V
SHIFT
CTRL
SPACE
ALT
Keys pressed at once: 0
Highest simultaneous: 0
Note: browsers can never see certain key combinations already blocked at the OS level — so this test isn't a 100% substitute for a hardware NKRO test, but it's quite reliable at showing issues you'll encounter in actual games.
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