Strong Password Generator — Uncrackable Passwords

Generate strong, uncrackable passwords with uppercase, lowercase, numbers, and symbols. Cryptographically secure — runs locally in your browser.

Create passwords that would take billions of years to crack. This generator uses your browser's crypto API to produce truly random, high-entropy passwords. Customize length (8-128 characters), include symbols, numbers, and mixed case for maximum security.

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Strong
🔒100% Private — Your files never leave your device. All processing runs locally in your browser.

How It Works

Click Generate to create a random password. Adjust length using the slider (6–64 characters) and toggle character types: uppercase, lowercase, numbers, and symbols. A strength meter shows password security.

The generator uses the Web Crypto API — the same cryptographically secure random number generator used by banks and security software. Your password is created entirely in your browser and is never transmitted anywhere.

Features

  • Crypto-secure randomness (Web Crypto API)
  • Length slider: 6–64 characters
  • Toggle uppercase, lowercase, numbers, symbols
  • Real-time strength meter with scoring
  • One-click copy to clipboard
  • Generate multiple passwords at once

Frequently Asked Questions

A strong password is at least 16 characters long and includes uppercase, lowercase, numbers, and symbols. Our generator creates passwords with maximum entropy.

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