What is the difference between UUID v4 and v7?

UUID v4 is purely random. UUID v7 embeds a Unix timestamp in the most significant bits, making IDs naturally sortable by creation time — useful for database B-tree indexes.

Are generated UUIDs guaranteed to be unique?

UUID v4 has 122 random bits, making collisions astronomically unlikely for practical purposes. For critical systems, still enforce uniqueness constraints in your database.

Is my data sent to a server?

No. UUIDs are generated entirely in your browser using the Web Crypto API. Nothing is transmitted or stored on Zovaty servers.

Can I use these UUIDs in production?

Yes. Output follows the standard UUID format and is suitable for production databases, APIs, and distributed systems.

UUID Generator - Free Online UUID Tool

Zovaty

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UUID Generator - Free Online UUID Tool | Zovaty