Keyboard
Test a keyboard online: keys and ghosting
Key test in the browser: press keys and you will see which one fires, plus ghosting or a stuck key.
What this keyboard test can do
- Visual ANSI layout with highlights
- key, code, location and repeat
- Ctrl/Alt/Shift/Meta modifiers
- Simultaneous key counter (ghosting)
- Down/up event history
- Copy the last event
How to test a keyboard online
Click the zone
Focus the capture panel — otherwise browser shortcuts stay normal.
Press keys
The layout highlights; key and code appear on the side.
Check chords
Hold several keys to see anti-ghosting limits.
Read history
The down/up log helps catch stuck keys and double-fire.
Frequently asked questions
How is key different from code?
code is the physical key (KeyA). key is the character with layout and Shift (“a” / “A” / “ф”).
Why do some shortcuts miss?
OS-level combos (Alt+Tab, etc.) never reach the page. In the focus zone we block normal page keys.
Why do some keys not register together?
Budget keyboards have rollover limits — certain combinations share circuits. The tool logs every keypress, so ghosting is easy to spot.
What is the keypress history for?
It lists recent keydown events with key and code so you can spot missed presses, layout mismatches, or ghosting without guessing from the live pad alone.