Generate random version 4 UUIDs in bulk. Cryptographically random, free and instant — everything runs in your browser.
Choose how many UUIDs you want and generate them in a single click. The values appear ready to copy — one at a time or the whole batch — so you can drop them straight into seed data, test fixtures, config files or a database.
Each press produces a fresh set, so you never reuse identifiers between runs.
UUIDs give you unique identifiers without asking a central database to hand them out. That is invaluable when you need to create records offline, merge data from several sources without key collisions, or assign an id on the client before the server has seen it.
Generating them in bulk is handy for seeding test data or pre-allocating keys, and doing it locally means the ids are ready instantly with no API round trip.
The generator produces version 4 UUIDs, whose bits are almost entirely random. It draws that randomness from the browser's cryptographic random source (Web Crypto), which is far stronger than ordinary pseudo-random numbers, making accidental collisions effectively impossible in practice.
No network call is involved — the ids are computed on your device the instant you ask for them.
It is a 128-bit identifier whose value is almost entirely random, making each one practically unique without any central registry.
The odds are astronomically small — with random v4 UUIDs you would need to generate billions before a collision becomes remotely likely.
Yes. Set the count and generate a whole batch in one click, then copy them together.
Yes. They use the browser's Web Crypto random source rather than a weaker pseudo-random generator.