It uses your browser's crypto.randomUUID(), a cryptographically secure random source — the same kind of randomness used for security-sensitive values.

What version of UUID is this?

Version 4 (random), the most common type and the one generated by crypto.randomUUID().

UUID Generator

Generators

Generate random, valid UUID v4 identifiers — one at a time or in bulk.

How many

UppercaseInclude hyphens

What you can do with this tool

Generate a unique ID for a new database record
Create a batch of test IDs for a fixture or seed script

Frequently asked questions

How random is this?: It uses your browser's crypto.randomUUID(), a cryptographically secure random source — the same kind of randomness used for security-sensitive values.
What version of UUID is this?: Version 4 (random), the most common type and the one generated by crypto.randomUUID().

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