When you need bulk UUIDs

Bulk UUID generation is common for: seeding databases with test data, generating unique identifiers for CSV imports, creating test fixtures for automated testing, populating mock APIs, and assigning IDs to batch-imported records. Generate exactly the number you need and copy them all at once.

-- SQL: Insert bulk UUIDs as seed data
INSERT INTO users (id, name) VALUES
  ('550e8400-e29b-41d4-a716-446655440000', 'Alice'),
  ('6ba7b810-9dad-11d1-80b4-00c04fd430c8', 'Bob');

// JavaScript: generate UUIDs in code
const ids = Array.from({ length: 100 }, () => crypto.randomUUID());

Output formats

Copy bulk UUIDs as a newline-separated list (one per line), comma-separated values, or a JSON array. Choose the format that matches your use case — paste directly into SQL INSERT statements, CSV files, or JSON fixtures. The JSON array format works directly with most API testing tools like Postman and Insomnia.