UUID / GUID Generator

What is a UUID?

A Universally Unique Identifier (UUID), also known as a Globally Unique Identifier (GUID) in the Microsoft ecosystem, is a 128-bit number used to identify information in computer systems.

This tool generates Version 4 UUIDs, which are completely randomly generated. The probability of finding a duplicate UUID is so close to zero that they are widely considered practically unique.

Features

• Cryptographically Secure: Uses the browser's native Web Crypto API (crypto.randomUUID()) to ensure highly secure randomness.
• Bulk Generation: Generate up to 1,000 UUIDs at once.
• Formatting Options: Easily toggle uppercase/lowercase and choose whether to include hyphens.
• Export: Download the list of generated UUIDs as a .txt file instantly.

Privacy Note

Since all generation is performed entirely in your browser using JavaScript, these UUIDs are never sent or stored on any server.