UUID v1 is derived from the current timestamp and the generating machine's MAC address, which makes it sortable by creation time but leaks information about when and where it was generated. UUID v4 is generated from random (or pseudo-random) bits instead, with no embedded metadata, which is why it is the default choice for most applications today.
Our UUID Generator generates version 4 UUIDs.
Looking for a tool to try out what you just read? Browse the full tools catalog.