How to use this Keyboard Checker

This keyboard checker shows what your browser receives from key events. It helps you verify key visibility and timing behavior, but it cannot directly prove hardware-level polling or electrical faults on its own.

How to use this keyboard checker

Click the map to focus.
Press keys you want to test.
Watch for green confirmation and red chatter warnings.

What the indicators mean

Diagnostic Green = key press detected.
Chatter Crimson pulse = possible double-fire within threshold.
Held list = currently pressed keys.
Possible stuck = held beyond timeout; possible only, not certain.

Who this is for

Keyboard owners validating a newly built or serviced board.
Gamers checking multi-key visibility based on what the browser receives.
Anyone collecting quick evidence before deeper firmware or hardware checks.

When to use this

After cleaning switches or replacing keycaps and stabilizers.
When repeated characters suggest possible chatter during typing.
Before filing support or RMA requests, so symptoms are documented clearly.

Need a different view of your typing session? Keyboard Counter (Home) gives a fast total, and Pro Counter adds longer-form pace and session tracking.