UUIDLens
Open generator

RFC 9562 · local Web Crypto

Generate UUIDs without sending identifiers anywhere

Choose UUIDv4 or UUIDv7, a bounded batch size and an explicit text format. Fresh random bytes are produced in this browser.

Runs locally

Generate or validate UUID text

UUIDs stay in this browser

Generate 1–1,000 values per action.

UUIDv4 and UUIDv7 generation only; validation recognizes RFC versions 1–8 plus Nil and Max.

UUIDs are identifiers, not passwords, access tokens, signatures or proof that a record exists.