QSTools
UUID Generator
Generate UUID v4 values locally.
Generated locally with crypto.getRandomValues — nothing is uploaded.
RFC 4122 UUID version 4 (random).
About this tool
This UUID generator creates RFC 4122 version 4 (random) identifiers in your browser with crypto.getRandomValues. Generate one ID or a batch (up to 100) for tests, database seeds, or client-side keys. Values are never sent to QSTools.
FAQ
- Are UUIDs uploaded?
- No. Generation and copy stay on your device.
- Which UUID version is this?
- Only UUID v4 (random). Version and variant bits follow RFC 4122. We do not generate time-based (v1) or name-based (v3/v5) UUIDs here.
- Can I use these in production?
- Yes for typical app IDs and test data. Collision risk for v4 is negligible for normal volumes; still use your platform’s official UUID library when you need guaranteed integration with a specific stack.