Live keyboard layout
Click here and press any key to begin testing
The tester needs focus to listen for keydown and keyup events.
Keys currently pressed
0
Total key presses
0
Maximum simultaneous keys
0
Active keys
No keyboard input detected yet
Focus the layout and press any key to populate the log.
Click the layout once, or use the focus button, so the page can listen for keydown and keyup events reliably.
Hold different combinations to see how many simultaneous presses your keyboard can register before blocking or ghosting appears.
Check whether the problem affects one key, one area, or whole groups of keys. Single-key failures often point to a switch or dirt issue, while multiple missing keys can indicate cable, matrix, firmware, or shortcut conflicts.
Continue with the next check that best matches the symptom you are troubleshooting.
Troubleshooting Center
Start with the symptom
Best next step
Detect possible key chatter by flagging unusually fast repeated key presses.
Test game controllers in your browser. Check every button, analog stick, trigger, axis value, mapping, connection event, and possible stick drift in real time.
Mouse test hub for clicks, wheel input, drag stability, and double-click diagnostics.