PasswordGen 🔑

A secure password generator with strength analysis, bulk generation, and history tracking. Built with the Web Crypto API for cryptographically strong randomness — all client-side.

Features

• Cryptographically Secure — Uses Web Crypto API (crypto.getRandomValues) for true randomness
• Customizable Options — Length, uppercase, lowercase, numbers, symbols, exclude ambiguous characters
• Strength Meter — Visual password strength indicator with entropy calculation
• Bulk Generation — Generate multiple passwords at once
• Password History — Track previously generated passwords (stored locally)
• One-Click Copy — Copy any password to clipboard instantly
• Dark/Light Mode — Toggle between themes
• 100% Client-Side — No data ever leaves your browser

Screenshot

Getting Started

git clone https://github.com/marcm0de/passwordgen.git
cd passwordgen
npm install
npm run dev

Open http://localhost:3000.

Tech Stack

• Next.js 16 (App Router)
• TypeScript
• Tailwind CSS v4
• Zustand (State Management + Persistence)
• Framer Motion (Animations)
• Lucide React (Icons)
• Web Crypto API (browser-native)

Security

All password generation happens in your browser using the Web Crypto API. No passwords are transmitted, stored remotely, or logged. History is saved in localStorage only.

License

MIT