TOOL / KEYCODE INSPECTOR

See what a key sends to your browser.

Press a key to inspect its logical character and physical position code, then follow its down and up events.

Press a key anywhere on this page outside a control.

Logical key—

Physical position code—

Location—

Event—

Modifiers—Side unknown / none held

Locks and held—0 positions held

No events received yet.

Event timestamp: — · Sequence: —

Press a key to inspect its browser event.

Use the event to narrow down a problem

Press the key once, then release it. Compare key (character or action) with code (position).
If a character is wrong but the position is stable, check your active input layout in the layout checker.
If events repeat while held, use the repeat test. If one press gives extra separate events, use the chatter test.

Browser codes describe positions reported to this page. They are not operating system scan codes and do not change your key mapping.