Strong Password Generator
Generate strong, secure random passwords locally in your browser. Choose length and character types with guaranteed inclusion.
Generated entirely in your browser using cryptographically secure randomness. No passwords are stored or transmitted.
How it works
This tool generates passwords using cryptographically secure randomness.
How it works:
- Uses crypto.getRandomValues for secure random generation
- Ensures at least one character from each selected set
- Shuffles characters to avoid predictable patterns
How to interpret results:
- Length: the most important factor for security
- Character types: increase complexity and entropy
- Entropy (bits): indicates resistance to brute-force attacks
For most users, a 16–24 character password is sufficient for strong protection.
Examples
- Email accounts: Use 16+ characters with letters and numbers.
- Banking: Use 20+ characters including symbols.
- Password manager: Use 24–32 characters for maximum security.
Examples:
- 16 chars → strong general use
- 24 chars → high security
- 32 chars → maximum protection
FAQ
- Is this password generator secure?
Yes. It uses crypto.getRandomValues, a cryptographically secure random source provided by your browser.
- Are generated passwords stored?
No. All generation happens locally. No data is stored or transmitted.
- What makes a password strong?
Length and randomness. Longer passwords increase entropy more than complexity alone.
- What is entropy in passwords?
Entropy measures how unpredictable a password is. Higher entropy means stronger security.
- Should I use symbols?
Symbols increase the character pool, improving entropy, but length is usually more important.
- Can I reuse passwords?
No. Each account should have a unique password to prevent security breaches.
- Is this safer than manual passwords?
Yes. Humans tend to create predictable patterns, while this tool generates truly random values.