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UUID, ULID & Nano ID generator — offline

Cryptographically random identifiers generated on your device — never logged by any server.

100% private — files never leave your device
0 IDs

How it works

  1. 1

    Pick UUID v4/v7, sortable ULID, or compact Nano ID.

  2. 2

    Choose how many you need (up to 1,000).

  3. 3

    Generate and copy the list.

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Frequently asked questions

Are these UUIDs generated on a server?

No — they come from your browser's cryptographically secure random generator (crypto.randomUUID / getRandomValues). Nobody else ever sees them, which matters if you use them as secrets or database keys.

What's the difference between v4 and v7?

v4 is fully random. v7 (RFC 9562) starts with a millisecond timestamp, so IDs sort by creation time — friendlier for database indexes.

How many can I generate?

Up to 1,000 at a time, ready to copy as a newline-separated list.