Developer Playground

UUID Generator

A UUID (Universally Unique Identifier) is used to generate a unique identifier. Each version has a different generation method and purpose.

UUID v4 (Random-based)

Completely randomly generated and widely used. The possibility of collision is extremely low.

Result:Click the button to generate a UUID v4

Generated by combining a Unix timestamp with a random value. It is sortable by time and advantageous for database indexing.

Result:Click the button to generate a UUID v7

Generated based on the current time and MAC address. It is unique but may expose time information.

Result:Click the button to generate a UUID v1

Generated by converting a namespace and name string into an SHA-1 hash. It is more secure than v3.

Namespace:

Name:

Result:Enter namespace and name, then click the button

Generated by converting a namespace and name string into an MD5 hash. Less secure than v5 but faster.

Namespace:

Name:

Result:Enter namespace and name, then click the button