Generate version 4 UUIDs using your browser's cryptographic random source, produce a batch for seeding a database, or check whether a string is a valid UUID.
Cryptographically random UUID v4 values
Bulk generation for test data and migrations
Validation for UUIDs of any version
Frequently asked questions
Are these UUIDs safe to use in production?
Yes. They come from the browser's crypto random generator, the same source server-side libraries use.
What is the difference between a UUID and a GUID?
They are the same thing. GUID is Microsoft's name for the same 128-bit identifier format.