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Documentation Core Tools Keycode Info

Keycode Info Tool

Experience the full-featured keycode information tool with real-time key detection, detailed key information display, and comprehensive history tracking.

What is Keycode Info?

The Keycode Info tool is a powerful utility that helps developers understand keyboard input events by displaying detailed information about any pressed key. It shows the JavaScript keycode, code, location, and modifiers for any key press, making it invaluable for debugging keyboard interactions and understanding browser keyboard event handling.

Key Features

  • Real-time Key Detection: Instantly capture and display information for any key press
  • Comprehensive Key Information: Shows key, keycode, code, location, and modifiers
  • Visual Key Display: Large, clear display of the pressed key
  • History Tracking: Keep track of previously pressed keys with timestamps
  • Copy to Clipboard: Easy copying of any key information
  • Responsive Design: Works seamlessly on desktop and mobile devices

Use Cases

  • Web Development: Debug keyboard event handlers and understand key mappings
  • Accessibility Testing: Verify keyboard navigation and shortcuts
  • Game Development: Understand key codes for game controls
  • Educational Purposes: Learn about JavaScript keyboard events
  • Cross-browser Testing: Compare key behavior across different browsers

Getting Started

  1. Navigate to the Tool: Visit the Keycode Info tool
  2. Press Any Key: Simply press any key on your keyboard
  3. View Information: See detailed information about the pressed key
  4. Copy Results: Click the copy button to copy any information to clipboard
  5. View History: Check the history section to see previously pressed keys

Key Information Explained

Key

The actual character or key name that was pressed (e.g., "a", "Enter", "Shift")

Keycode

The numeric code representing the key (deprecated but still useful for legacy code)

Code

The physical key identifier (e.g., "KeyA", "Enter", "ShiftLeft")

Location

The location of the key on the keyboard (0 = standard, 1 = left, 2 = right, 3 = numpad)

Modifiers

Any modifier keys that were held down when the key was pressed (Ctrl, Alt, Shift, Meta)

Browser Compatibility

The Keycode Info tool works in all modern browsers that support the KeyboardEvent API:

  • Chrome 51+
  • Firefox 23+
  • Safari 10+
  • Edge 79+

Privacy and Security

  • No Data Collection: All key information is processed locally in your browser
  • No Network Requests: The tool works entirely offline
  • Secure: No sensitive information is transmitted or stored
  • Local Storage: History is stored locally in your browser

Tips for Best Results

  1. Focus the Page: Make sure the browser tab is focused for key detection
  2. Use Different Keys: Try various keys including function keys, special characters, and modifier combinations
  3. Check History: Use the history feature to compare different keys
  4. Copy Information: Use the copy buttons to easily share key information

The Keycode Info tool is an essential utility for any developer working with keyboard interactions. Start exploring keyboard events today!

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