Free generator
Free UUID Generator
Generate random or time-ordered UUIDs — batch, format, and download privately.
How to use
1. Choose Version 4 (random) or Version 7 (time-ordered).
2. Set how many you need, and toggle hyphens, uppercase, or braces.
3. Copy one, copy all, or download a .txt file.
Not sure which version to pick? Compare them in UUID v4 vs v7.
FAQ
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit value used as an ID in apps, databases, and APIs. Collision risk is extremely low when generated correctly.
What’s the difference between v4 and v7?
Version 4 is fully random and the most widely used. Version 7 embeds a timestamp so IDs sort by creation time — handy as primary keys in databases.
Are these UUIDs secure / private?
They’re generated in your browser with Web Crypto (crypto.randomUUID / getRandomValues). Nothing is uploaded or stored by GenShelf.
Can I generate many at once?
Yes. Set the count up to 100, then copy all or download a .txt file with one UUID per line.