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Utilnivo

Developer

Utilnivo

Random UUID Generator

Generate random UUIDs instantly—copy for keys, tests, and configs.

No registration
  • On your device

Browse more in Developer or all tools.

What is a UUID generator?

A UUID generator creates random unique identifiers (v4) for databases, APIs, and test data. IDs are generated locally in your browser.

Private on your device

Your information stays on your device and is not uploaded.

Related tools

This random UUID generator produces standard UUID strings on demand. Use them as document IDs, session tokens in dev environments, or placeholder keys in API mocks—all generated locally without signup.

Do not use predictable or truncated UUIDs for security secrets—UUIDs identify records; they are not auth tokens by themselves.

Some databases prefer hyphenless UUID strings—strip hyphens if your ORM requires it.

How to use this tool

Generate UUIDs, copy individually or in bulk, and paste into code, SQL, or JSON fixtures.

Worked example

Example: paste five generated UUIDs into a Jest fixture file for order IDs in checkout flow tests.

When to use this

  • Mock API servers returning resource IDs.
  • Populating spreadsheet imports with unique keys.
  • Quick unique filenames in automation scripts.

Common examples

  • Generate v4 UUID for a new database primary key in local seed scripts.
  • Batch of five UUIDs for mock API fixtures in integration tests.
  • UUID for trace id in log correlation examples in documentation.
  • Ten UUID v4 values → seed rows for local integration test database.
  • UUID v7 batch → ordered IDs for event-sourcing demo data.

Common mistakes

  • Reusing the same UUID across environments.
  • Using UUID where auto-increment integers suffice.
  • Committing generated secrets tied to UUID patterns.

How it works

Generates UUID v4 (random) or v7 (time-ordered) identifiers using crypto-random bytes on your device. Supports bulk generation with optional uppercase and hyphen formatting.

Limitations

Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.

Privacy and file handling

Your data stays on your device and is not uploaded.

Related UUID Generator pages

These pages use the same uuid generator with examples tailored to different tasks.

FAQ

Frequently asked questions

UUID vs GUID?

GUID is Microsoft's term for the same 128-bit identifier format.

Bulk generation?

Generate multiple IDs on the tool page when bulk mode is available.

Offline use?

Generation runs in the browser once the page is loaded.

Related pages

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