Keyboard Test Online
Check if all keys on your keyboard are working properly. ProbeCheck provides a visual keymap, detects stuck keys, tests N-key rollover capability, and helps identify hardware issues.
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Key detection via native KeyboardEvent. N-key rollover tests simultaneous key presses.
Frequently Asked Questions
How do I know if my keyboard keys are working?
Press each key on your keyboard one by one. The virtual keyboard on screen will highlight each key as you press it, making it easy to spot non-responsive keys.
What is N-key rollover and how do I test it?
N-key rollover (NKRO) is the ability to press multiple keys simultaneously and have all register. Hold down multiple keys at once - if all show up on the virtual keyboard, your keyboard supports NKRO.
Can this test detect stuck or ghosting keys?
Yes. If a key appears pressed on the virtual keyboard without you touching it, that indicates a stuck key or ghosting issue with your physical keyboard.