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UUID Generator

Generate cryptographically random UUID v4 identifiers.

Processing: in your browser (nothing uploaded)

About UUID Generator

UUID Generator creates RFC-style UUIDs for database keys, request IDs, and idempotency tokens — generated locally with secure randomness.

Prefer UUID v7 when you need time-sortable IDs (see UUID v7 Generator).

Do not use UUIDs as sole secrets.

Free unlimited generation: /tool/uuid-generator.

How to use UUID Generator

  1. 1

    Click Generate.

  2. 2

    A unique UUID v4 is created.

  3. 3

    Copy it to your clipboard.

Why use UUID Generator

  • Runs 100% in your browser
  • No file uploads needed
  • Instant results
  • Private — data never leaves your device

Use cases

  • Generate UUIDs for test fixtures and database seeds
  • Create unique IDs without installing a CLI
  • Copy bulk UUIDs when scaffolding sample data

Privacy

UUID Generator runs entirely in your browser on FileToolsHub. Your — is processed in this tab and is never uploaded to our servers.

That means passwords, tokens, personal notes, and documents you paste or load stay on your device. Clear the page or close the tab when you are finished on a shared computer.

You still need a network connection to load the page the first time. After that, the core processing for UUID Generator does not require sending your content to FileToolsHub.

Limitations

  • UUID Generator depends on your browser. Very large inputs may slow or freeze older devices; try a smaller sample if the tab becomes unresponsive.
  • UUID Generator does one focused job. For multi-step workflows, use the related tools below or the Text Tools hub.

UUID Generator FAQ

Which UUID version?

UUID v4 — random, suitable for most applications.

Are they unique?

Collision probability is astronomically low for practical use.

Is UUID Generator free?

Yes. UUID Generator on FileToolsHub is free for everyday use with no account required for standard jobs.

Does UUID Generator upload my data?

No. UUID Generator runs in your browser, so your — stays on your device.

How do I use UUID Generator?

Click Generate. A unique UUID v4 is created. Copy it to your clipboard.

Does UUID Generator work on mobile?

Yes. UUID Generator works in modern mobile and desktop browsers. Large files may be slower on limited connections.

Can I use UUID Generator offline?

Once the page is loaded, most of UUID Generator runs locally. You need network access to open FileToolsHub the first time.

What are the limitations of UUID Generator?

UUID Generator depends on your browser. Very large inputs may slow or freeze older devices; try a smaller sample if the tab becomes unresponsive. UUID Generator does one focused job. For multi-step workflows, use the related tools below or the Text Tools hub.

Related guides

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