Password Strength Checker is a lightweight, single-file Python tool that analyzes 
any password and scores it from 0-100 based on real security criteria — length, 
character variety, and predictable patterns.

Instead of just showing a score, it tells you exactly what's weak and how to fix 
it, with clear, actionable suggestions. Everything runs 100% offline — no 
internet connection, no external API calls, no data ever leaves the user's 
machine.

Perfect as a standalone tool, a learning reference for password-scoring logic, 
or a starting point to integrate into a larger security or authentication project.

- Scores passwords from 0-100 using length, character variety, and pattern analysis
- Weak / Medium / Strong strength rating with visual progress bar
- Detects common weak passwords (e.g. "123456", "password")
- Flags predictable patterns: repeated characters, sequential characters (abcd, 1234)
- Gives specific, actionable improvement suggestions (not just a score)
- Hidden password input (not shown in terminal while typing)
- Check multiple passwords in a single run
- 100% offline — no data collected, stored, or transmitted
- Clean, well-commented code — easy to read, modify, or extend
- Zero external dependencies — pure Python standard library only

- Python 3.9 or higher
- No external libraries or installations required
- Works on Windows, macOS, and Linux

1. Download and extract the .zip file
2. Open a terminal in the extracted folder
3. Run: python password_strength_checker.py
4. Enter the password you want to check when prompted (input is hidden for privacy)
5. View your score, strength rating, and improvement suggestions
6. Choose to check another password or exit

No installation or setup required beyond having Python 3.9+ installed.