ShadowReference
ShadowReference
Developer Productivity

UUID Generator

Free online tool · runs in your browser

Generate random UUID v4 identifiers.

…

Quick tutorial

  1. 1Select how many UUIDs to generate (max 100).
  2. 2Click Generate.
  3. 3Copy or download.

Free online uuid generator

Generate UUID v4 (random) identifiers locally with the Web Crypto API. Create a single UUID or a batch (up to 100), then copy or export as text/CSV. This GUID generator is for unique keys in databases, filenames, and request IDs — not for sequential or time-based UUID v1 values.

How to use UUID Generator

  1. Select how many UUIDs to generate (max 100).
  2. Click Generate.
  3. Copy or download.

Limitations

  • Uses crypto.randomUUID() — requires a secure context in some browsers.

Example

Input

Generate 5 UUIDs

Output

550e8400-e29b-41d4-a716-446655440000
6ba7b810-9dad-11d1-80b4-00c04fd430c8
7c9e6679-7425-40de-944b-e07fc1f90ae7

FAQ

Frequently Asked Questions

What UUID version is generated?

UUID version 4 (random). Each ID is generated with crypto.randomUUID().

Is a UUID the same as a GUID?

Yes in practice. GUID is Microsoft’s name for the same 128-bit identifier format.

Can UUIDs collide?

v4 collisions are astronomically unlikely for normal app volumes. Do not use this as a security secret by itself.

What version?

UUID v4 (random).

Is UUID Generator free to use?

Yes. UUID Generator on ShadowReference is free, with no account, no watermarks, and no server-side processing.

Does this tool send my data to a server?

No. All processing happens locally in your browser. Your input never leaves your device.

Related

Related Tools