Random String Generator

The generator uses the Web Crypto API (crypto.getRandomValues) when available, which provides cryptographically secure random numbers. If unavailable, it falls back to Math.random() for basic randomness.

You can toggle any combination of A-Z, a-z, 0-9, symbols (!@#$%...), and HEX (0-9 A-F). Plus, you can type custom characters in the custom field to extend the pool with any additional characters you need.

Select HEX character set and length 32 for a random hex string. For a formatted UUID, generate 32 hex chars and manually add dashes: 8-4-4-4-12 pattern. Alternatively, use our UUID Generator tool which creates properly formatted UUIDs (both v4 random and v1 time-based) with the correct structure automatically.

The tool works with a positive character pool — you select which character sets to include. To exclude specific characters, use the Custom field to type exactly the characters you want instead of using the preset sets. For example, type all letters except vowels for a consonant-only string, or use only specific symbols.

The Web Crypto API (window.crypto.getRandomValues) accesses the operating system's entropy source — typically hardware noise, mouse movements, and timing jitter. This provides true randomness suitable for cryptographic keys, tokens, and security-sensitive identifiers, unlike Math.random() which uses a predictable pseudo-random algorithm.

Yes. Select uppercase, lowercase, digits, and symbols for strong passwords. Use a length of 16-32 characters for good security. The crypto-grade randomness makes it suitable for production use.