Keyboard test
Press every key on your keyboard. A key lights while it's down and stays marked once it works.
- 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 Lock
- A
- S
- D
- F
- G
- H
- J
- K
- L
- :;
- "'
- |\
- Enter
- Shift
- Z
- X
- C
- V
- B
- N
- M
- <,
- >.
- ?/
- Shift
- Ctrl
- Win
- Alt
- Alt
- Win
- Menu
- Ctrl
- PrtSc
- ScrLk
- Pause
- Ins
- Home
- PgUp
- Del
- End
- PgDn
- ↑
- ←
- ↓
- →
- Num
- /
- *
- −
- 7
- 8
- 9
- 4
- 5
- 6
- 1
- 2
- 3
- +
- Enter
- 0
- .
- Keys tested
- 0 of 104
- Held now
- 0
- Most at once
- 0
- Last key
- –
- Press any key to start.
Fn and some media keys never reach a browser, so they can't light. Letters, digits and punctuation type nothing here; every other key keeps its usual job.
When a key doesn't light
Fn changes what other keys send and never reaches the browser. Hold it and press the keys it switches, such as F1 to F12, to test those.
Volume, brightness and media keys are handled by your system. Some reach the browser and light; most don't, and that doesn't mean they're broken.
On Windows, Print Screen is reported only when you let go, so it lights after you release it.
If a letter or digit key doesn't light at all, the key or its switch is likely faulty. Try it in another program to be sure.
Several keys at once
"Most at once" counts the keys you've held down together. Many keyboards drop a key once a few are held in some combinations, which is called ghosting. Hold the keys you use together, in games for instance, and watch whether each one lights.
Choosing your keyboard
The drawing starts from your language and browser. Change it under Keyboard; it also switches by itself when you press a key only some keyboards have, such as the one beside the left Shift on UK and European keyboards.