A comprehensive client-side password analysis tool that demonstrates how attackers identify and exploit weak passwords - for defensive security education only.
Live Demo: View on GitHub Pages
✨ Features
🚀 Live Demo
🛠️ Technical Details
📁 Project Structure
🎯 How to Use
🔒 Privacy & Security
🎓 Educational Value
🐛 Troubleshooting
📄 License
This tool operates entirely in your browser. No passwords are transmitted, stored, or shared. This application exists solely for defensive security education to help users understand password vulnerabilities and create stronger passwords.
🔍 Password Strength Analysis Real-time strength scoring (0-100 scale)
Entropy calculation (bits of randomness)
Character composition analysis
Pattern detection (keyboard patterns, repetitions, leetspeak)
Defensive recommendations with specific improvements
Dictionary Attack: Tests against 10,000+ common passwords
Brute Force: Systematic character-by-character guessing
Hybrid Attack: Dictionary words with character substitutions
Visual progress indicators with estimated cracking times
Real-time attack simulation with visual feedback
How attackers crack passwords - detailed methodologies
Password creation best practices - do's and don'ts
Additional security measures - 2FA, password managers, breach monitoring
Interactive examples - test common password patterns
Tab-based navigation (Analyzer, Simulation, Education)
Real-time visual feedback with color-coded strength meters
Interactive progress bars for attack simulations
Responsive design works on desktop and mobile
Dark theme with gradient backgrounds
Access the tool directly: 👉 https://bd-mutant7.github.io/Password-Analyzer/
Client-Side Architecture No server-side processing - everything runs in your browser
No data transmission - passwords never leave your device
No storage - no passwords are saved or logged
No external dependencies - completely self-contained HTML/CSS/JS
HTML5 - Semantic structure and accessibility
CSS3 - Modern gradients, flexbox, grid, animations
Vanilla JavaScript - No frameworks, pure ES6+
GitHub Pages - Static hosting with automatic SSL
✅ Zero data collection - completely anonymous
✅ No tracking - no analytics, no cookies
✅ Local execution only - runs entirely in browser sandbox
✅ Open source - fully transparent codebase
text Password-Analyzer/ ├── index.html # Main application (required) ├── 404.html # GitHub Pages redirect fix ├── README.md # This documentation ├── .nojekyll # Disables Jekyll processing └── assets/ # (Optional) For future images/icons ├── screenshot1.png └── screenshot2.png
bash
git clone https://Bd-Mutant7.github.io/Password-Analyzer.git
open index.html # Mac start index.html # Windows xdg-open index.html # Linux
Single File Download Download index.html
Double-click to open in any browser
That's it! No installation needed
- Password Analysis Tab text
- Enter any password in the input field
- Click "Analyze Password"
- View:
- Strength score (0-100)
- Entropy measurement
- Character composition
- Detected vulnerabilities
- Improvement recommendations
- Attack Simulation Tab text
- Enter a password to test
- Click "Run Attack Simulation"
- Watch three attack methods:
- Dictionary (checks common passwords)
- Hybrid (dictionary + variations)
- Brute Force (systematic guessing)
- See estimated cracking time
- Security Education Tab text • Learn about different attack methodologies • Discover password creation best practices • Understand additional security layers • Get defensive security tips Test Examples (Try These!) Password Expected Strength Description password123 Very Weak Common password with numbers Tr0ub4dour&3 Moderate Complex but predictable CorrectHorseBatteryStaple Strong Long passphrase X&$9pL2@qF!n Very Strong Random characters
What We DON'T Do ❌ Never transmit passwords over network
❌ Never store passwords in any form
❌ Never use analytics or tracking
❌ Never require internet connection
❌ Never use third-party scripts
❌ Never set cookies for passwords
✅ Run 100% in browser sandbox
✅ Use only client-side JavaScript
✅ Provide educational insights
✅ Help improve security awareness
✅ Offer defensive recommendations
This tool teaches:
For Individuals Why password length matters more than complexity
How attackers use dictionary and brute force attacks
The danger of password reuse
How to create memorable but secure passphrases
When to use password managers
For Organizations Password policy best practices
Importance of hashing algorithms
Rate limiting and account lockout strategies
Multi-factor authentication benefits
Security awareness training resources
For Developers How to implement secure password storage
Common authentication vulnerabilities
Client-side vs server-side validation
Security headers and best practices
Common Issues Issue Solution GitHub shows README instead of app The 404.html file automatically redirects to index.html Blank page on GitHub Pages Clear cache (Ctrl+F5) or wait 2 minutes for deployment JavaScript not working Enable JavaScript in browser settings Styles not loading Check browser console for CSP errors Mobile display issues Rotate device or use desktop mode GitHub Pages Specific yaml
Contributions are welcome! Please follow these guidelines:
Fork the repository
Create a feature branch (git checkout -b feature/improvement)
Commit changes (git commit -m 'Add some feature')
Push to branch (git push origin feature/improvement)
Open a Pull Request
Contribution Guidelines Maintain client-side only architecture
Preserve privacy/security guarantees
Keep educational focus
Test thoroughly before submitting
Update documentation as needed
This project is for educational purposes only. All code is provided as-is for defensive security education.
✅ Use for personal security education
✅ Use for classroom/workshop demonstrations
✅ Use for security awareness training
✅ Modify for personal/educational use
❌ Do not use for malicious purposes
❌ Do not use to attack systems you don't own
❌ Do not redistribute as your own without attribution
❌ Do not use in commercial products without modification
If you use this tool in presentations or training, please credit: "Password Strength Analyzer with Security Simulation - Defensive Security Education Tool"
OWASP Password Storage Cheat Sheet
NIST Digital Identity Guidelines
Have I Been Pwned?
KeePass Password Manager
https://api.star-history.com/svg?repos=bd-mutant7/Password-Analyzer&type=Date