Visual keyboard layout with live highlighting
Seeing keys light up as you press them is one of the fastest ways to confirm whether a keyboard issue is hardware-related or limited to a specific application.
Free Keyboard Tester Online with Windows and Mac Layouts
Test every key in your browser with a familiar full keyboard layout, instant OK status after each successful input, support for Windows and Mac key maps, and quick feedback for modifiers, arrows, and the numeric keypad.
Visual Keyboard Tester
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
Win
Alt
Space
Alt
Fn
Menu
Ctrl
PrtSc
ScrLk
Pause
Insert
Home
PgUp
Delete
End
PgDn
Up
Left
Down
Right
Num
/
*
-
7
8
9
+
4
5
6
+
1
2
3
Enter
0
.
Enter
Last key
No key detected yet
Code
--
Modifiers
None
Events
0
Caps Lock
OFF
Num Lock
OFF
Scroll Lock
OFF
To test numeric keypad be sure Num lock is ON.
Quick Coverage Checks
Any letter key
Waiting
Modifier key tested
Waiting
Navigation key tested
Waiting
Numpad key tested
Waiting
How the status colors work
Keys show a strong green state while pressed. After a successful event, the key border stays green so you can see which keys have already passed.
Testing note
Test duplicate keys one by one, especially left and right modifiers and the dedicated numpad Enter key. Use the platform switch if you are validating a Mac keyboard.
What This Online Keyboard Test Checks
This page is built for search intent like "keyboard test", "keyboard checker", and "keyboard diagnostics". The tool runs directly in the browser so users can verify the hardware path before moving on to deeper troubleshooting.
Modifier and code inspection
The tester shows the reported key code and active modifiers so you can diagnose shortcut failures and unusual remapping behavior.
Useful for stuck keys, dead keys, and setup checks
This page is practical when a user reports that a specific key no longer works, repeats unexpectedly, or fails in gaming and shortcut workflows.
How To Use It
1
Press the problem keys first
If a key is suspected of failing, test it directly and confirm whether it lights up in the browser keyboard map.
2
Check modifiers and shortcuts
Press Shift, Ctrl, Alt, and other modifier combinations to verify that keyboard shortcuts can still be assembled correctly.
3
Compare browser behavior with the failing app
If the key works here but not in another application, the issue is likely app-specific rather than a dead switch.
Why It Matters
Built for the common "my key stopped working" search intent
People often need a quick answer, not a full hardware lab. This page provides that first answer by showing whether the browser sees the key at all.
Useful for office, gaming, and laptop troubleshooting
Whether the problem is a shortcut, a WASD key, or a laptop function key combination, the visual layout helps narrow down the failure mode quickly.
Still limited by what browsers can observe
Some firmware-level function keys or manufacturer shortcuts may never reach the browser as standard key events, so absence on this page is not always conclusive for those special keys.
Frequently Asked Questions
Why does a key work here but fail in another program?
That usually means the keyboard hardware is fine and the issue is in the other program, its shortcut bindings, overlay software, or the operating system.
Can a browser keyboard tester detect every laptop function key?
No. Some manufacturer-specific keys are intercepted below the browser and never appear as standard keyboard events.
What if a key never highlights on this page?
That points strongly toward a hardware issue, firmware issue, remapping utility, or OS-level input problem rather than a single web app bug.
Can this test show stuck modifier keys?
Yes. If Shift, Ctrl, Alt, or Meta remain active unexpectedly while you press other keys, the modifier readout helps expose that behavior.
More Browser Hardware Tests
These tools cover related search intents without duplicating the same copy. Each page focuses on a specific device path so users can isolate the problem faster.
Screen Test
Display specs, browser FPS sampling, and a quick PPI calculator for monitor checks.
Network Test
Connection details, latency checks, reachability probes, and a same-origin download estimate.
Sound Test
Speaker tones, left-right stereo checks, and a live microphone level monitor.
Camera Test
Live camera preview, device selection, and stream settings such as resolution and frame rate.
Mouse Test
A live mouse pad that tracks clicks, wheel scrolls, and movement in real time.
Last updated: April 3, 2026