UUID Generator

Generate random UUID v4 identifiers in bulk. Copy individual UUIDs or all at once.

The UUID Generator creates random UUID v4 identifiers using the browser’s cryptographic random number generator. UUID v4 is the most commonly used variant for generating unique identifiers in web applications, databases, and distributed systems.

Bulk generation

The tool supports bulk generation — you can create multiple UUIDs at once and copy them individually or all at once. This is handy for seeding test databases, generating mock data, or preparing configuration files that require unique identifiers.

Standards compliance

Each generated UUID follows the standard 8-4-4-4-12 hexadecimal format (e.g., 550e8400-e29b-41d4-a716-446655440000) and conforms to RFC 4122. The version nibble is set to 4 and the variant bits are set correctly, ensuring compatibility with any system that expects valid UUID v4 identifiers. The randomness comes from crypto.getRandomValues(), ensuring proper entropy.

Highlights

Generates RFC 4122 compliant UUID v4 identifiers
Bulk generation with configurable count
Copy individual UUIDs or all at once
Cryptographically secure random generation