What this tool does
A UUID is a unique-looking identifier string. This tool supports random version 4 IDs, time-ordered version 7 IDs, and deterministic version 5 IDs based on namespace and name.
UUID Generator
Generate random version 4 or version 7 UUIDs directly in your browser, or build deterministic version 5 UUIDs from a namespace and name. Everything is created locally with secure browser APIs, never sent to the server, and never stored in server memory.
Version 4 uses secure randomness and is the usual choice for general unique IDs.
Batch generation is useful when you need many IDs at once for fixtures, test data, or bulk imports.
Enter one name per line to generate one deterministic UUID per line with the selected namespace.
Batch size
1
UUID version
Version 4
Output format
One per line
Why it is private
UUIDs are generated locally in the browser with secure randomness, so nothing is uploaded or stored on the server.
What it is useful for
- Creating test identifiers for apps, APIs, and databases.
- Generating time-sortable identifiers with UUID v7.
- Creating repeatable identifiers from stable names with UUID v5.
- Generating IDs for sample payloads or configuration work.
- Making unique references without having to invent them by hand.
- Generating UUID batches for fixtures, seed data, or bulk imports.
Important note
A UUID is an identifier, not a password or secret token. It is meant for identification, not for protecting accounts.