TRUTHY TOOLS

UUID Generator

Generate UUID v4 or timestamp-sortable UUID v7 values.

Version
UUID
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UUID v4 is random. UUID v7 includes a Unix millisecond timestamp, which makes it naturally sortable by generation time.

About this tool

UUID helps developers, QA engineers, and support teams generate identifiers in both random UUID v4 and timestamp-sortable UUID v7 formats. Use it for seed data, mock API payloads, database fixtures, trace IDs, support examples, and documentation where a unique-looking value is needed quickly.

Use cases

  • Generate a UUID v4 for a mock resource ID in API examples, Postman collections, seed scripts, or demo payloads.
  • Generate a UUID v7 when sortable identifiers are useful for event streams, logs, local test records, or database insertion order examples.
  • Copy several IDs into QA fixtures without reusing customer, production, or personally identifying values.
  • Create throwaway identifiers for tickets, screenshots, and reproducible examples without installing a package or running a script.

FAQ

What is the UUID tool used for?

Use UUID to generate copy-ready UUID v4 or UUID v7 identifiers for tests, examples, fixtures, demos, and documentation.

What input and output should I expect?

Choose the UUID version or generation option available on the page. The output is one or more RFC-style UUID strings that you can copy into code, JSON, SQL, docs, or tickets.

Are generated UUIDs safe for secrets?

No. UUIDs are identifiers, not passwords, API keys, or cryptographic secrets. Do not use them as authentication tokens or access-control credentials.

What edge cases should I know?

UUID strings are commonly lowercase with hyphens, but storage systems may normalize casing or remove hyphens. Confirm your database column length, index strategy, and UUID version support before production use.