Keyboard Test
Check every key works
What is the Keyboard Test?
The Keyboard Test lets you press every key on your keyboard and highlights each one on a visual layout as it registers. It is the fastest way to check for stuck keys, broken switches, or keys that do not register correctly — useful after spills, drops, or when buying a used keyboard.
How to Use
- 1Click the test area to focus it
- 2Press each key on your keyboard one at a time
- 3Keys that register correctly will highlight on the virtual keyboard
- 4Any key that does not highlight may be faulty
What is a Good Score?
Every key on your keyboard should register. If any key does not highlight, it may have a hardware fault, debris under the keycap, or a driver issue.
Tips to Improve
- →If a key fails, try removing the keycap and cleaning underneath with compressed air
- →Test in multiple browsers — a key that fails in Chrome but works in Firefox may indicate a browser-specific issue
- →For mechanical keyboards, a switch that double-registers may need cleaning or replacement
Frequently Asked Questions
Why does my keyboard test show some keys not working?
Possible causes include debris under the keycap, a faulty switch, keyboard firmware issue, or a driver problem. Try cleaning first, then testing with another device to isolate the problem.
What is keyboard ghosting?
Ghosting occurs when a keyboard fails to register certain key combinations pressed simultaneously. Gaming keyboards with N-key rollover (NKRO) prevent ghosting by registering every key independently.