What is a UUID v4?
A UUID (Universally Unique Identifier) is a 128-bit identifier with a near-zero chance of collision, even when generated on millions of different machines. Version 4 is fully random and looks like xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx.
How to generate UUIDs?
- Enter the number of UUIDs you need.
- Click Generate.
- Copy the result in one click.
Frequently asked questions
Can two UUIDs be identical?
In practice, no: the collision probability of a v4 UUID is negligible.
Are UUIDs generated on a server?
No, they are created in your browser with a cryptographic random generator.