Secure Password Generator

Generates one or several random passwords with configurable length, uppercase, lowercase, numbers, and symbols, excluding ambiguous characters and optionally avoiding consecutive repeats. Uses exclusively the browser's crypto.getRandomValues() with rejection sampling to eliminate modulo bias — never Math.random(). No generated password is ever sent or saved anywhere.

Processed on your device, no AIde 4 a 128 caracteres, hasta 50 contraseñas a la vez

Recommended: 20 or more. Prioritize length over complexity.

Character categories

Best practices

  • Prioritize length over complexity.
  • Use a distinct, unique password for each service.
  • Keep your passwords in a password manager instead of memorizing them.
  • Don't reuse passwords across accounts.
  • Avoid personal data (dates, names) in your passwords.
  • Turn on multi-factor authentication when it's available.

No password generated here is unbreakable or impossible to crack; high length and randomness make it very resistant, not absolutely secure.

Want to check an existing password? Use the password strength analyzer.

The data is processed on your device and is never sent to the server.

Use cases

How to use this tool

  1. Adjust the length and character categories
  2. Generate one or several passwords
  3. Copy or download them and save them in a password manager

Frequently asked questions

Are the generated passwords impossible to crack?
No password is invulnerable. A long, random password is very resistant to a brute-force attack, but no tool can promise absolute security.
Is any generated password saved or sent anywhere?
No. Each password is generated in your browser and disappears when you close or reset the tool; it isn't saved on the server, in cookies, or in local storage.

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