UUID Generator

UUID Generator is a web page that creates universally unique identifiers on demand. Each page load gives a fresh version 4 UUID, and bulk output is available for test data.

Version 4 UUIDs are built from random numbers, and the site says it uses a secure random generator. The page also covers version 1, version 7 and the nil UUID. You can generate many values at once and download them as a file for seeding databases or test fixtures.

• Version 4 UUIDs from a secure random source
• Bulk generation of many UUIDs at once
• Download results to a file
• Also offers version 1, version 7 and nil UUIDs
• Developer API for automated generation

Developers creating IDs for records, testers who need sample data and database designers comparing UUID versions. It is a quick option when you do not want to write a generator yourself.

The site offers a developer API for automated use. Its terms state that generated values come without warranty, and that users are responsible for how they use them. Do not copy UUIDs from cached versions of the page. For production systems, use the UUID library in your own programming language.