UUID Generator
Generate random UUID v4 identifiers locally in your browser.
Choose how many UUIDs you need from the dropdown and press Generate. The dropdown offers 1, 5, and 10 for common use cases.
The tool creates version 4 UUIDs with crypto.randomUUID, which uses your browser's cryptographically strong random number generator.
Click any single UUID to copy it, or press Copy all to grab the entire list at once.
Frequently asked questions
What is a UUID?
A UUID is a Universally Unique Identifier, a 128-bit label used to identify information without needing a central authority to assign IDs.
Are these UUIDs secure?
They use the browser's built-in crypto random source, so they are suitable for database keys, session IDs, and other non-secret identifiers.
Can I generate more than 10 at once?
The current presets are 1, 5, and 10 for quick access. You can press Generate repeatedly or use Copy all to collect larger batches.