ULID Generator
Generate ULIDs — time-ordered, lexicographically sortable unique identifiers. Great for database primary keys.
Decode ULID
ULID vs UUID
- ULID is 26 characters vs UUID's 36 (no hyphens, Crockford's base32).
- ULIDs are lexicographically sortable — the first 10 characters encode the timestamp, so ULIDs sort in creation order.
- UUIDs are random and do not sort by time, which can cause B-tree index fragmentation in databases.
- Both are globally unique. ULIDs are better for database primary keys; UUIDs are more widely supported.
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