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UUID Generator

Generate random UUID v4 identifiers directly in your browser.

Generated UUIDs

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Generate UUID v4 Online

Generate random UUID version 4 identifiers instantly in your browser. Create a single UUID or generate multiple identifiers at once for development, testing, databases and other applications.

What is a UUID?

A UUID, or Universally Unique Identifier, is a 128-bit identifier commonly used by software applications and databases to identify records, objects and other resources without relying on sequential numbers.

What is UUID v4?

UUID version 4 identifiers are generated primarily from random data. Their extremely large number of possible values makes accidental collisions very unlikely when UUIDs are generated correctly.

Private browser-based generation

UUIDs are generated locally using your browser's cryptographic random number generator. Nothing needs to be sent to the HandyKitz server.

Practical example

UUIDs identify records without needing a shared sequential counter. They are identifiers, not proof of identity or authorization.

For three test records, request three UUIDs and use a different result for each record. A UUID v4 has the shape xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx, where y is 8, 9, a or b.

Frequently asked questions

Can a generated UUID be used as a secret access token?

An identifier alone is not an authorization policy. Use a purpose-built token scheme and access checks rather than assuming a UUID protects a resource.

Can I generate UUID v1 or v7 here?

No, the generator uses the browser's UUID v4 function. It does not offer timestamp-based versions or custom namespaces.

Why is a request for more than 100 UUIDs reduced?

The batch count is capped at 100 and kept at a minimum of one. Generate additional batches if you need more identifiers.