ToolsPopper
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GUID Generator

UUID v4 generator.

What is the GUID Generator?

ToolsPopper's GUID Generator creates RFC 4122 version-4 UUIDs (also called GUIDs) with one click. Each identifier is 128 bits of randomness formatted as eight-four-four-four-twelve hexadecimal characters — ready for database primary keys, API correlation IDs, and session tokens in development.

UUIDs are generated locally using cryptographically strong random values in your browser. Nothing is logged on ToolsPopper servers.

When to generate UUIDs

  • Database keys — assign unique IDs without a central sequence
  • API development — correlation and request IDs in microservices
  • Testing — sample identifiers for unit tests and mock data
  • File naming — collision-resistant names for uploads and exports

How it works

Click Generate to produce one UUID v4 string. Copy it directly from the output field and generate again for unlimited new identifiers.

ToolsPopper vs RandomLists and UUID sites

  • Unlimited free generation — no rate limits or signup
  • Standards-compliant v4 — proper RFC 4122 format
  • Private local creation — IDs are not stored remotely
  • One-click copy workflow — minimal UI friction
  • No account — instant access on page load

Frequently Asked Questions

Common questions about GUID Generator

Is the GUID generator free?

Yes. Generate unlimited UUIDs with no account.

Which UUID version is used?

Version 4 (random) UUIDs compliant with RFC 4122.

Are UUIDs stored on your server?

No. Each ID is created locally in your browser.

Are these cryptographically secure?

The tool uses the browser's crypto random source suitable for development and testing. For high-security production keys, follow your platform's security guidelines.

Can I bulk-generate hundreds?

Each click produces one UUID. Click repeatedly or script locally for bulk needs.

ToolsPopper vs RandomLists?

RandomLists focuses on random list pickers. ToolsPopper provides developer ID generators with unlimited private use.

UUID vs GUID — same thing?

In practice, yes. GUID is Microsoft's term; UUID is the standard name — both refer to the same identifier format.

Works on mobile?

Yes. Tap Generate and copy the UUID on any device.

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