Stuck Key Test
Identify keys that appear to stay pressed after release.
Press keys now
DeviceOK uses browser keyboard events. Some system-reserved keys and shortcuts never reach websites.
EscapeF1F2F3F4F5F6F7F8F9F10F11F12`1234567890-=⌫TabQWERTYUIOPBracketBracket\CapsASDFGHJKL;'EnterShiftZXCVBNM,./ShiftCtrlMetaAltSpaceAltMetaCtrlUpDown
Keys seen0
Max simultaneous0
Repeat events0
Last hold—
What happened?Choose the result you observed.
Privacy: Test input is processed in your browser where possible.
What this test tells you
This test checks
- Key down
- Key up
- Held state
How to read the result
A passing browser test confirms that the browser can observe this input/output path.
A failing test narrows the issue but does not by itself prove physical hardware failure.