UUID Generator
Generate UUID v4 and v7 instantly.
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⚙️ How It Works
Choose UUID version and quantity, then generate a list of unique IDs instantly using secure browser APIs.
❓ Frequently Asked Questions
What is a UUID?
A UUID is a universally unique identifier used to uniquely identify data across systems.
What is the difference between UUID v4 and v7?
v4 is random-based, while v7 includes a timestamp, making it sortable by creation time.
When should I use UUID v7?
Use v7 when you need time-ordered IDs, such as database indexes or logs.
Are these UUIDs secure?
Yes, they use cryptographically secure randomness from the browser crypto API.
Can I generate multiple UUIDs at once?
Yes, you can generate up to 100 UUIDs in a single batch.
What is a GUID?
GUID is another name for UUID, commonly used in Microsoft systems.
Are UUIDs guaranteed to be unique?
They are not guaranteed, but the probability of collision is extremely low.
Can I use UUIDs as database primary keys?
Yes, especially v7 which is optimized for indexing due to its sortable structure.
Does this tool work offline?
Yes, all generation happens locally in your browser.
Is this tool free?
Yes, it is completely free to use.
Does the UUID Generator work offline?
Yes, the UUID Generator is fully functional offline. Because this tool runs entirely in your browser, no data is ever uploaded to external servers. Once the page is loaded, you can seamlessly continue using it without an active internet connection. You can also install Knicknaks as a Progressive Web App (PWA) for native-like offline access.