UUID Generator Online (v1, v4, v5)
Runs 100% in your browser — your files never leave your device.
Database keys, trace IDs, idempotency tokens — UUIDs are everywhere. Generate time-based v1, random v4, or deterministic v5 identifiers, with the standard DNS, URL, OID, and X500 namespaces available for v5 hashing. Everything is produced locally with your browser's random source.
How it works
- 1
Choose a version
Pick v1 (time-based), v4 (random), or v5 (name-hashed).
- 2
Add name and namespace for v5
Deterministic v5 UUIDs hash a name inside a namespace like DNS or URL.
- 3
Generate and copy
One click mints the identifier; another copies it.
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