Online secure random generator tool. Free generation of cryptographically secure passwords, UUIDs, and encryption keys. Uses browser's built-in crypto.getRandomValues() API to ensure true randomness. Supports batch password generation, custom character sets, and strength estimation. Perfect for password creation, API key generation, and encryption key generation. All generation happens locally in your browser, absolutely secure.
UUID v4
Generate a random UUID (Universally Unique Identifier)
Random Password
Generate cryptographically secure passwords with custom settings
256-bit Hex Key
Generate a 256-bit random key in hexadecimal format
Cryptographically Secure
All values are generated using the Web Crypto API's crypto.getRandomValues() method, which provides cryptographically strong random values suitable for security-sensitive applications.
All processing happens locally. No data is sent to any server.