What is a UUID / GUID?

A UUID (Universally Unique Identifier) or GUID (Globally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems without requiring a central registration authority.

Version 4 (v4) UUID Structure

A standard v4 UUID consists of 32 hexadecimal digits displayed in five groups separated by hyphens (8-4-4-4-12) for a total of 36 characters (e.g., 123e4567-e89b-12d3-a456-426614174000). Version 4 UUIDs are generated using cryptographically strong random numbers.

100% Browser-Based Cryptographic Security

This generator uses Web Crypto API's native crypto.getRandomValues() engine directly inside your web browser. Generated identifiers are generated locally and never transmitted across the network.