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PassDuck

A lightweight open-source Chrome and Safari extension for instantly generating secure, random passwords. Customize length, character sets, and easily copy with one click — all processed locally for privacy.

Features

  • Lowercase letters (a-z)
  • Uppercase letters (A-Z)
  • Numbers (0-9)
  • Custom characters (configurable)
  • Strength entropy meter
  • Passphrase generator (fun fact)
  • Colorized password characters
  • "Blur" to keep shoulder-surf protection
  • Persisted states in settings chrome.storage.sync
  • 📋 One-click copy to clipboard
  • 🌙 Dark theme support (automatic based on system preference)
  • 🔒 Cryptographically secure random generation and Fisher-Yates shuffle

Browser Compatibility

  • Safari 15+ (custom build)
  • Chrome 88+
  • Edge 88+
  • Brave
  • Any Chromium-based browser with Manifest V3 support

Support

For issues or feature requests, please modify the code as needed. This is a standalone extension with no external dependencies.