How to generate UUIDs

1. Set how many UUIDs you need

   Use the "How many" field to specify the count — from 1 to 50 per run. The default is 5. Run the tool multiple times if you need more than 50.

2. Choose a copy-friendly format

   Select how the UUIDs should be joined for quick pasting: One per line (the default, for most editors and scripts), Comma-separated (for CSV or inline lists), or JSON array (for code that expects a JSON array literal).

3. Generate

   Press Run. The tool generates RFC 4122 UUID v4 values using Node's built-in `crypto.randomUUID()`. Each UUID is cryptographically random — no two runs will produce the same value.

4. Copy and use

   Click Copy to grab all UUIDs at once in the chosen format. Paste directly into your database migration, test fixture, environment variable, or configuration file. UUIDs are safe to use as primary keys, correlation IDs, session tokens, or anywhere you need a globally unique identifier.