UUID generator

Type uuid (or guid). Each row is copied with Enter.

Generate

• v4: a random UUID.
• v7: a time-ordered UUID, which sorts by creation time and is handy for database keys.
• The same v4 with no hyphens, in UPPERCASE and in {BRACES} (GUID style), plus the nil UUID.
• uuid 5 (any number from 1 to 100) gives that many at once, one per line.

Inspect

uuid <existing uuid> shows the version, the variant and, for v1, v6 and v7 UUIDs, the time it was created, and offers the lower-case, UPPERCASE, no-hyphen and braces forms. Hyphens are optional and {braces} and urn:uuid: are accepted.

UUIDs use the browser’s secure random generator. A single copied UUID is saved in Recent (and reopens as an inspection); batches are not.