UUID v4 Generator
Create random identifiers one at a time or in batches, without making any server request.
What is this tool?
A UUID v4 is a 128-bit identifier whose value is random apart from version and variant bits. It is often used for record keys, request IDs and test fixtures.
How to use
- Choose a quantity from 1 to 100.
- Select Generate or regenerate.
- Copy one row or copy the entire batch.
- Clear the list when finished.
Example
550e8400-e29b-41d4-a716-446655440000 shows the standard 8-4-4-4-12 UUID shape.
FAQ
Are these UUIDs guaranteed unique?
No finite random system offers an absolute guarantee, but collisions with properly generated v4 UUIDs are extraordinarily unlikely.
Is the fallback random?
Yes. It uses crypto.getRandomValues(), not Math.random().
Can I generate more than 100?
The interface caps each batch at 100 to keep copying and rendering manageable.