Random String Generator

Generate cryptographically secure random strings for passwords, API keys, tokens, and other security purposes.

Length: 32

8128

Include Numbers (0-9)

Include Symbols

Generate cryptographically secure random strings.

Generated String

Generate cryptographically secure random strings using the browser's crypto API. Perfect for passwords, API keys, and tokens.

Common uses:

Security Features

Uses crypto.getRandomValues() for true randomness

Not predictable with pseudo-random algorithms

Suitable for security-sensitive applications

Letters Only: A-Z, a-z (52 characters)

Alphanumeric: Letters + 0-9 (62 characters)

With Symbols: Letters + numbers + special chars (94 characters)

High Security: Include symbols for maximum entropy

URLs/Filenames: Letters + numbers only (avoid special chars)

User Passwords: Balance security with usability

API Keys: Letters + numbers (easier to handle)

This tool uses crypto.getRandomValues() which is supported in:

All modern browsers (Chrome 11+, Firefox 21+, Safari 3.1+)

Node.js environments

Mobile browsers

Web Workers

Fallback: If crypto.getRandomValues() is unavailable, the tool uses Math.random() with a security warning.