UUID Generator

Generate random version 4 UUIDs locally, one per line.

Up to 1,000 UUIDs per batch. Output limit: 2,000,000 characters.

Version 4 UUIDs use browser cryptography. Select Generate UUIDs for a fresh batch.

Download result

Your input is processed in your browser and is not uploaded to ToolPixels. This tool does not save your input.

How to use it

  1. Choose how many UUIDs to generate.
  2. Choose the options that match your task.
  3. Select Generate UUIDs, then review the result.
  4. Copy the result or download uuid-generator.txt.

Random version 4 identifiers

Each UUID uses cryptographically generated random bytes with the version 4 and RFC variant bits set. There are 122 random bits per identifier. Collisions are extremely unlikely, but global uniqueness is not guaranteed. The tool does not register, store or reserve identifiers. Generate a new batch whenever needed.

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