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UUID/GUID Generator

Generate cryptographically secure random UUID Version 4 (RFC 4122) and Microsoft GUID identifiers individually or in bulk.

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Random UUID & GUID Generator

Generate cryptographically strong, collision-free UUID Version 4 strings and GUIDs using modern browser Web Crypto APIs.

Key Features:

  • Web Crypto API cryptographic randomness.
  • Bulk generation up to 100 UUIDs at once.
  • Format customization (uppercase, no hyphens, braces).
  • One-click copy all to clipboard.

How to Use:

  1. Choose quantity (1 to 100 UUIDs).
  2. Toggle options: hyphens, uppercase lettering, surrounding braces { }.
  3. Click Generate to create your identifiers and copy with one click.

What is a UUID Version 4?

A Version 4 UUID consists of 128 bits generated randomly, with 6 bits reserved for version and variant metadata, yielding 5.3x10^36 potential combinations.

Frequently Asked Questions:

The odds of generating a duplicate UUID v4 are so astronomically minute that it is practically impossible under any realistic workload.

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