Secure Password Generator 🔐

Modern, zero-dependency password generator built with vanilla HTML/CSS/JS. It uses the browser’s crypto.getRandomValues API to produce cryptographically strong passwords, surfaces real-time entropy estimates, and includes a friendly UI focused on accessibility. ⚡

✨ Features

• 🔒 Cryptographically secure randomness with rejection sampling to avoid modulo bias.
• 🎚️ Adjustable length slider (4–64) plus toggles for lowercase, uppercase, numbers, and symbols.
• 🧩 Guaranteed inclusion of every selected character category with unbiased shuffling.
• 📈 Real-time entropy calculation in bits and a color-coded strength meter.
• 📋 Copy-to-clipboard button with optimistic UI feedback and keyboard focus handling.
• 🙈 Password visibility toggle that resets on every generation for safety.
• 💠 Fully responsive glassmorphism UI with accessible labels, ARIA live regions, and semantic HTML.

🚀 Getting Started

1. Clone or download

git clone https://github.com/<your-handle>/password-generator.git
cd password-generator

2. Open in a browser

Because this is a static site, simply open index.html in any modern browser (Chrome, Edge, Firefox, Safari). No build tools or package installs required.

3. Optional: serve locally

If you prefer running a local server (recommended for clipboard APIs in some browsers), use any static server. Example with npx serve:

npm install -g serve
serve .

Then visit the printed http://localhost:* URL.

🧠 How It Works

• script.js defines character sets, handles secure random generation, shuffles the result, computes entropy, updates the meter, and wires up copy/visibility interactions.
• style.css implements the responsive layout, glassmorphism aesthetic, and small animations for the copy feedback.
• index.html provides semantic markup, ARIA attributes, and hooks for the UI controls.

🛠️ Customization Ideas

• Adjust the entropy thresholds or labels in estimateStrength to match your policy.
• Expand the symbol list or add preset profiles (e.g., “PIN”, “Passphrase”).
• Hook the generator into a backend or browser extension for direct use in other apps.

🤝 Contributing

Issues, ideas, and pull requests are welcome. Please:

• Open an issue describing the bug/feature before submitting large changes.
• Keep dependencies lightweight—prefer native browser APIs.
• Add inline comments where the logic could be surprising.
• Test in at least one Chromium-based browser and one Gecko/WebKit browser.

🗺️ Roadmap

• Export passwords as passphrases or Diceware-style words.
• Add keyboard shortcuts (e.g., Space to regenerate, Ctrl+C to copy).
• Dark/light theme toggle driven by prefers-color-scheme.

📜 License

This project is provided as-is; feel free to adapt it within your own repositories. If you publish a derivative, crediting the original author is appreciated but not required.

Made with love by Sohail and open contributions ❤️