Apple Keyboard Tester

An Apple keyboard tester is a diagnostic tool that visually displays a full Apple Magic Keyboard layout and highlights keys as they are pressed on your physical keyboard. The tester helps you verify that every key on your Apple or Mac keyboard is functioning correctly - including the Fn (Globe) key, Command (⌘), Option (⌥), Control (⌃), Caps Lock, and all function keys F1 through F12. Our Apple keyboard tester online displays a full-size Magic Keyboard layout with all six rows of keys, provides a live event log with key codes, and shows modifier key states in real time - all running locally in your browser with no data sent anywhere.

1. Press Any Key: Simply start typing on your Apple or Mac keyboard. The Apple keyboard tester captures every keydown and keyupevent in real time using the browser's native keyboard event API. Each key press lights up the corresponding key on the visual Magic Keyboard layout below.
2. Visual Feedback: Pressed keys are highlighted in the primary colour with a glow effect, while modifier keys (Shift, Control, Option, Command, Fn, Caps Lock) are displayed with distinct colours in the status bar. The Caps Lock key has a green indicator dot that lights up when Caps Lock is active. The visual layout shows all six rows of a standard Apple Magic Keyboard, including the function key row, number row, QWERTY letters, and arrow cluster.
3. Review Key Data:The "Last Key Pressed" panel shows detailed information about the most recent key event including the key value, physical key code, key code number, event type, and active modifier keys. The event log below keeps a running history of the last 50 key events for detailed analysis.

• Full Magic Keyboard Layout: The tester displays all six rows of a standard Apple Magic Keyboard: the function key row (Escape, F1-F12, Eject), number row, QWERTY row, home row, bottom letter row, and the modifier/arrow row.
• Fn (Globe) Key Detection:The tester detects the Fn key and displays it as "🌐 Globe" in the event log, correctly identifying Apple's special function key that may be labelled with a globe icon on newer Magic Keyboards.
• Modifier Key Status: All six modifier states are displayed in colour-coded badges: Shift (blue), Control (purple), Option (amber), Command (green), Fn/Globe (rose), and Caps Lock (emerald). Active modifiers are highlighted with a coloured background and ring.
• Event Log with Key Codes: Every key press is logged with timestamp, event type (keydown/keyup), key value, physical code, and numeric key code - useful for developers testing keyboard event handling.

Test each key systematically by pressing every key from top-left to bottom-right across the keyboard layout. Pay special attention to modifier keys (⌘ ⌥ ⌃ ⇧) since they are used most frequently and can wear out faster. If a key does not light up when pressed, try cleaning around that key with compressed air - dust and debris are the most common cause of unresponsive keys. Note that some browser keyboard shortcuts (like Cmd+W to close a tab, or Cmd+N for new window) may be intercepted by the browser before reaching the tester. For complete testing, press modifier keys individually rather than in combinations. The Fn/Globe key behaviour varies by macOS version and keyboard model - on newer Macs with the Touch Bar, the Escape key may be virtual. If you are using a custom keyboard layout (Dvorak, Colemak), the displayed key labels will match the physical key caps but the event log will show the actual key codes being sent by your custom layout.