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Security & Network

Password Generator

Generate strong, random passwords with customizable options

Entropy: 130 bitsExcellent

Pool size: 89 chars · 20 chars = 130 bits entropy

What is Password Generator?

A password generator creates cryptographically secure random passwords using the Web Crypto API. Unlike simple Math.random(), it uses true randomness from your operating system, making generated passwords suitable for securing accounts, servers and databases.

How to Use Password Generator

  1. 1

    Set password length

    Use the slider to choose between 4 and 128 characters. 16-20 is recommended for most accounts.

  2. 2

    Choose character types

    Toggle uppercase, lowercase, numbers and symbols. More character types = stronger passwords.

  3. 3

    Set count

    Generate up to 20 passwords at once for batch account creation.

  4. 4

    Generate and copy

    Click Generate, then copy individual passwords or all at once.

Features

  • Cryptographically secure via Web Crypto API
  • Adjustable length from 4 to 128 characters
  • Entropy calculation with strength meter
  • Batch generation up to 20 passwords
  • One-click copy individual or all
  • 100% client-side — nothing sent to any server

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Frequently Asked Questions

Are generated passwords truly random?+
Yes. We use crypto.getRandomValues() which uses your OS cryptographic random number generator — the same source used by password managers like 1Password and Bitwarden.
What password length should I use?+
For most accounts, 16-20 characters with all character types gives excellent security (80+ bits of entropy). For master passwords or encryption keys, use 24+ characters.
Is my password sent to your server?+
No. Everything runs in your browser using the Web Crypto API. No data leaves your device.
What is entropy?+
Entropy measures password randomness in bits. Higher entropy = harder to crack. 60 bits is good, 80+ is strong, 128+ is excellent.