UUID Generator
Generate bulk universal unique identifiers (UUID v4) right in your browser, without sending anything to servers.
What is a UUID
A UUID (Universally Unique Identifier) is a 128-bit number used to identify information uniquely without relying on a central registry. Version 4 is generated from random values, making the chance of collision between two UUIDs practically zero.
This generator runs entirely in your browser using the Web Crypto API (crypto.randomUUID), ensuring secure randomness. No UUID is ever sent or stored on servers — everything happens locally on your device.
Frequently asked questions
Can two UUIDs be the same?
The chance is extremely low. With UUID v4, there are about 2^122 possible combinations, making collisions practically impossible in practice.
Are the UUIDs sent to any server?
No. All generation happens locally in your browser; nothing is transmitted or saved online.
How many UUIDs can I generate at once?
You can generate up to 100 UUIDs per batch. To generate more, just click generate again.
Can I remove the hyphens or use uppercase letters?
Yes. Use the options below the result to toggle hyphens, uppercase letters and wrapping braces according to the format your system requires.
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