How it works
Pick an identifier version deliberately
Version 4 uses random bits. Version 1 contains a timestamp and uses a freshly randomized node and clock sequence here, never your device MAC address. Version 7 contains Unix-time information and random data. The locally bundled uuid package supplies the RFC 9562 algorithms.
Version 1 and 7 reveal time information and are not interchangeable with opaque secrets. UUIDs identify records; they are not passwords or authorization tokens. Collisions are possible, so a database still needs its own uniqueness handling. Exports retain all requested identifiers, one per line.
What happens to your input?
This tool does its work on this page. The site does not submit your entries or results or keep a history. However, any script allowed to run on the page could read its fields. Clearing the tool or leaving the page cannot erase clipboard entries, downloads, printouts, or screenshots. It also cannot protect you if your browser or device is compromised. Read the privacy limits.