Password Strength Analyzer - Check Password Security

Analyze your password strength, detect vulnerabilities, and get expert recommendations to improve security.

🔒 Password Strength Analysis

Your password is never sent to our servers. All analysis happens locally in your browser.

What is Password Strength Analysis?

Password strength analysis is the process of evaluating how secure your password is against various types of attacks. A strong password is essential for protecting your online accounts from hackers and unauthorized access.

Why Should You Check Your Password Strength?

Using a weak password puts you at risk of:

  • Dictionary Attacks: Hackers try common passwords from databases of leaked credentials
  • Brute Force Attacks: Automated tools try millions of password combinations
  • Social Engineering: Guessable passwords based on personal information
  • Credential Stuffing: Reusing passwords across multiple accounts
  • Pattern Attacks: Simple keyboard patterns like "qwerty" or "12345"

How Our Password Strength Analyzer Works

Our tool analyzes your password using multiple criteria:

  • Length Analysis: Longer passwords are exponentially harder to crack
  • Character Variety: Mix of uppercase, lowercase, numbers, and symbols
  • Entropy Calculation: Mathematical measure of password randomness
  • Pattern Detection: Identifies common keyboard sequences and patterns
  • Dictionary Checks: Compares against lists of common passwords
  • Time to Crack: Estimates how long it would take to brute force your password

What Makes a Strong Password?

A secure password should have:

  • Minimum 12-16 characters for better security
  • Mixed character types: Uppercase, lowercase, numbers, and special characters
  • No personal information: Avoid names, birthdays, or common words
  • No common patterns: Don't use keyboard sequences or repeated characters
  • High entropy: Maximum randomness and unpredictability
  • Unique: Use different passwords for different accounts

Tips for Creating Strong Passwords

  1. Use a passphrase: Combine multiple random words (e.g., "CorrectHorseBatteryStaple")
  2. Add complexity: Mix in numbers, symbols, and case variations
  3. Length over complexity: Longer passwords are often stronger
  4. Avoid substitutions: Simple letter-to-number swaps (a→@, o→0) are predictable
  5. Use a password manager: Let it generate and store unique passwords
  6. Enable 2FA: Two-factor authentication adds an extra layer of security
Note: Our password strength analyzer runs entirely in your browser. Your password is never transmitted to our servers, ensuring complete privacy and security.

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About Password Strength Analyzer

This tool analyzes password strength using multiple security criteria including length, character diversity, common patterns, dictionary words, and known vulnerabilities. It provides real-time feedback and actionable suggestions to improve password security.

Frequently Asked Questions

The analyzer evaluates passwords based on length, character variety (uppercase, lowercase, numbers, symbols), common patterns, dictionary words, and known weak passwords. It calculates entropy (randomness) and checks against databases of compromised passwords to provide a comprehensive security score.

Yes! All password analysis happens entirely in your browser using JavaScript. Your password is never sent to our servers or stored anywhere. However, for maximum security, we recommend testing similar passwords rather than your actual passwords, or using this tool only for educational purposes.

A strong password has: (1) At least 12-16 characters, (2) Mix of uppercase, lowercase, numbers, and symbols, (3) No dictionary words or personal information, (4) No common patterns like "123" or "abc", (5) High entropy (randomness). Use a password generator for best results.

Common vulnerabilities include: dictionary words (easily guessed), sequential characters (123, abc), repeated characters (aaa, 111), keyboard patterns (qwerty), personal information (names, dates), short length (under 8 chars), and passwords found in breach databases. Our analyzer detects all these issues.

To improve password strength: (1) Increase length to 16+ characters, (2) Add special characters and numbers, (3) Mix uppercase and lowercase, (4) Avoid dictionary words - use random combinations, (5) Don't use personal information, (6) Use a password manager to generate and store strong passwords, (7) Enable 2FA for additional security.