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CodexValley

UUID Generator

Available

Generate random version 4 UUIDs in bulk, in lowercase, uppercase or without hyphens.

Use the tool

Everything runs in your browser. Your text is not uploaded or stored.

About this tool

Generate random version 4 UUIDs, the 36-character identifiers used as database keys, file names and request ids. Make up to 100 at once and copy them in the format you need.

How it works

  • Each UUID is made with your browser's secure random number generator.
  • The format is 8-4-4-4-12 hexadecimal characters, with the version digit 4 and a variant digit of 8, 9, a or b.
  • You can switch to uppercase or remove the hyphens.

Common questions

Can two UUIDs ever be the same?

In practice no. The chance of a repeat among random version 4 UUIDs is so small that systems treat them as unique.

Are they safe to use as secrets?

They are random, but a UUID is meant as an identifier, not a password or token. Use a dedicated secret generator for security.

Your text is processed in your browser and is never uploaded.

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