IconVault's Keyboard API Playground uses the real `navigator.keyboard` interfaces: dump your full layout map to see which physical key produces which character, inspect live keydown, keyup events with `code`, `key`, modifiers and repeat flags, and test a shortcut matcher that recognizes combos as you type. A dead-key detector shows how accent composition behaves on your layout. It is free and runs fully in your browser.

You will learn why `code` (the physical key) and `key` (the produced character) differ across layouts like QWERTY, AZERTY and Dvorak, and why `getLayoutMap()` is the right way to build shortcut help that stays correct in every language. The lab also covers the limits: the Keyboard API is Chromium-only, the layout map needs no permission, and locking the keyboard (`keyboard.lock()`) only works in fullscreen for specific keys.