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What Is a UUID? Version 4 Explained

Published: Oct 19, 2026 | Updated: Oct 19, 2026 | About (Japanese)

Key points
  • Generate
  • Look at the format
  • Use it

UUID Generator makes version 4 (random) UUIDs.

Steps

  1. Generate
  2. Look at the format
  3. Use it
They are split into five groups of 8-4-4-4-12 characters.
Use "UUID Generator (v4, in bulk)" (free)

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