KoguNavi

UUID Generator

Create one or many random UUID v4 identifiers for tests, sample data, documentation, or local development. Generation uses the browser Crypto API.

Local-first

UUID generation runs in your browser. No generated IDs are uploaded, stored, or logged.

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Try it with

Three UUIDs

Input

count=3

Output

6f1ed002-ab2e-4c12-8f92-0fd3aaf0f6b4
2b77f4bc-ec58-42af-a8d0-c3a5e7a3c0bb
f77fd476-9f33-4546-8cec-70fd8f5a82bd

Hyphenless uppercase

Input

count=2 uppercase=true hyphenless=true

Output

6F1ED002AB2E4C128F920FD3AAF0F6B4
2B77F4BCEC5842AFA8D0C3A5E7A3C0BB

How to use

  1. Paste or type input into the tool.
  2. Run the action or review live output.
  3. Copy the result, or clear the workspace when finished.

Inputs and outputs

UUID options
Batch size from 1 to 100, plus optional uppercase and hyphenless formatting.
Generated UUIDs
One UUID v4 per line, formatted with the selected options.

What it helps with

  • Create sample IDs
  • Fill test fixtures
  • Prepare documentation examples

Useful for structured workflows

  • Generate placeholder identifiers
  • Prepare mock payload examples

Good to know

  • UUIDs are random identifiers, not passwords or secrets.
  • UUIDs are not sequential.
  • UUIDs do not provide a database collision guarantee by themselves.

FAQ

More small answers will be added as the toolbox grows.