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UUID & GUID Generator
Generate cryptographically secure UUID v4 (random) and UUID v7 (time-ordered) identifiers in bulk.
Generation Settings
Generated UUIDs
KNOWLEDGE BASE
Frequently Asked Questions
Everything you need to know about processing files securely in your browser
What is the difference between UUID v4 and UUID v7?
UUID v4 is entirely random (based on cryptographically secure random numbers), while UUID v7 is time-ordered (sequential), combining a millisecond-precision timestamp with random bits. UUID v7 is highly recommended for database primary keys because it maintains sorting order and improves index insertion performance.
Are the generated UUIDs safe and cryptographically secure?
Yes. They are generated using the browser's native crypto.getRandomValues() API, which provides cryptographically strong pseudo-random number generator (CSPRNG) values, ensuring high entropy and collision resistance.
Can I generate UUIDs in bulk?
Yes, you can generate up to thousands of UUIDs in bulk instantly. You can choose the version (v4 or v7), the count, and download the results as a text file or copy them directly to your clipboard.
Are the generated IDs tracked or stored on your server?
No. Because this generator is client-side, the generation process happens completely offline on your device. We do not store, log, or track any generated UUIDs.