What is UUID v8?

UUID v8 is an experimental UUID version defined in RFC 9562 reserved for vendor-specific or custom use cases. Unlike other UUID versions that follow strict formatting rules, v8 provides 122 bits of free space (after the version and variant bits) that implementations can fill however they choose. This makes it ideal for prototyping new identifier schemes or embedding application-specific data into a standard UUID format.

Features

  • Generate 1 to 100 UUID v8 values at once
  • Toggle uppercase formatting
  • Toggle hyphen separators
  • Download results as a text file
  • Cryptographically secure random generation

Use cases

  • Prototyping custom identifier schemes that need to fit the UUID format
  • Testing systems that must handle all UUID versions including experimental ones