• A Version 4 UUID is a universally unique identifier that is generated using random numbers.
  • This variant is designed for backward compatibility with the now-obsolete Apollo Network Computing System 1.5 UUID format developed around 1988, where the...
  • A Version 1 UUID is a universally unique identifier that is generated using a timestamp and the MAC address of the computer on which it was generated.
  • The term GUID is generally used by developers working with Microsoft technologies, while UUID is used commonly used elsewhere.
  • A universally unique identifier (UUID) is a 128-bit number used to identify information in computer systems.
  • Small - Zero-dependency, small footprint, plays nice with "tree shaking" packagers. CLI - Includes the uuid command line utility.
    • Weekly downloads:
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    • Version:
      10.0.0 · 9 June 2024
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  • After all, UUID usage is wide-reaching in the software industry.
  • A Universally Unique Identifier (UUID) is a 128-bit label used for information in computer systems. The term Globally Unique Identifier (GUID) is also used...
  • UUID5 : Generate a UUID based on the SHA-1 hash of a namespace identifier (which is a UUID) and a name (which is a string,this site use UUID1 as string).
  • The variant of UUID indicates it’s format and encoding or simply the layout of the UUID, the variant tells us how all the other bits of the UUID are going to be interpreted.