Key Hold Duration Test
Useful for checking whether a key releases cleanly or appears to remain held.
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—
Press and hold a key, then release it. The last measured down-to-up duration is shown above.
What happened?Choose the result you observed.
Privacy: Keyboard events stay local.
What this test tells you
This test checks
- Key down
- Key up
- Hold duration
How to read the result
A repeatable long hold when you release quickly can be a clue to a stuck input path.
System-reserved keys may not be visible to the browser.