Developer

UUID Generator

Generate UUID v4 lists instantly for apps and tests. Processing stays on your device — no upload, no account.

How to use UUID Generator

  1. Choose how many UUIDs to create.
  2. Generate the list.
  3. Copy all IDs at once.

Why use this free uuid generator tool?

  • All processing happens locally in your browser. Your files are never uploaded to a server.
  • crypto.randomUUID() v4.
  • Bulk generation.
  • One-click copy.

Technical details

UUID version 4 draws 122 random bits via the Web Crypto RNG. Collisions are astronomically unlikely for typical app usage. This tool does not generate time-based v1 UUIDs.

UUID Generator FAQ

Are UUIDs sent anywhere?

No. All processing happens locally in your browser. Your files are never uploaded to a server.

Which version?

Version 4 (random).

Sorted UUIDs?

v4 is not time-sortable; use ULID/KSUID patterns if you need ordering.

Bulk limit?

Keep counts reasonable for UI responsiveness (hundreds to a few thousand).

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