UUID Generator — v4 & v7, Bulk Generate

Generate random (v4) or time-based (v7) UUIDs — up to 100 at a time.

How It Works

  1. 1Upload your file by dragging it into the drop zone or clicking to browse.
  2. 2Adjust the quality slider to balance file size and visual fidelity (optional).
  3. 3Click Download to save your converted file.

About UUID Generator

UUIDs (Universally Unique Identifiers) are 128-bit identifiers used as database primary keys, request IDs, and session tokens. This tool generates UUID v4 (random, using Web Crypto API) and UUID v7 (time-ordered, ideal for database keys). Generate one at a time or bulk generate up to 100. Copy individual UUIDs or the entire list. Everything runs in your browser using cryptographically secure randomness.

Frequently Asked Questions

What's the difference between UUID v4 and v7?

UUID v4 is fully random. UUID v7 is time-ordered — the first 48 bits encode a millisecond timestamp, making it ideal for database primary keys because it preserves insertion order and improves index performance.

Are the UUIDs cryptographically random?

Yes. Both versions use the Web Crypto API (crypto.getRandomValues) for their random components.

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