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Security & cryptography

UUID generator

Generate NIL, v1/v3/v4/v5/v6/v7 UUIDs with namespaces and batch output.

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Using this tool

Generate stable name-based identifiers or random UUIDs.

Actions: Generate UUIDs

Example

v5 uses the DNS namespace and this exact name, producing a repeatable value.

Example action and settings

Action: Generate UUIDs
Version: v5
Namespace preset (v3/v5): DNS
Name (v3/v5): www.widgets.com
Count: 1

Input / action

Result / expected behavior
21f7f8de-8051-5b89-8680-0195ef798b6a
Available options: Version · Count · Namespace preset (v3/v5) · Custom namespace UUID · Name (v3/v5)
Scope and limitations
  • Each batch contains 1–1000 values; a custom namespace must be a valid UUID.
Common mistakes
  • Repeated names produce repeated v3/v5 values; UUIDs are not access credentials.
Related tools
ULID generator  Token generator  
Privacy and browser support
Input is processed in this browser. Do not use real keys or active sensitive credentials as demonstration data. Device features require browser support and your permission.