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Prime Webkit

UUID Generator

Generate secure v4 UUIDs in bulk.

Runs 100% in your browser — nothing is uploaded

Generate RFC-4122 version-4 UUIDs in your browser using the secure Web Crypto API. Create one or many at once, with options for uppercase and braces, and copy them individually or all together. Nothing is uploaded.

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Frequently asked questions

What UUID version is generated?

Version 4 (random) UUIDs, created with the browser's cryptographically secure random generator.

Can I generate many at once?

Yes — set the count to create up to 100 at a time and copy them all with one click.

Are they truly unique?

Version-4 UUIDs have 122 random bits, making practical collisions astronomically unlikely.

Is anything uploaded?

No. UUIDs are generated locally in your browser.

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