Keyboard Event Viewer

The "key" property returns the character produced by the key press (e.g. "a" or "A"), while "code" returns the physical key on the keyboard (e.g. "KeyA") regardless of modifier state or keyboard layout.

The keyCode property is deprecated because its values are inconsistent across browsers and keyboard layouts. The modern replacement is the "key" and "code" properties, which are standardized and predictable.

Location indicates where on the keyboard the key is. 0 means standard, 1 means left (e.g. left Shift), 2 means right (e.g. right Shift), and 3 means numpad.

This tool captures keydown events. It displays the full event object properties including key, code, keyCode, which, location, and all modifier states (Shift, Ctrl, Alt, Meta).