ULID Generator

What is a ULID?

A Universally Unique Lexicographically Sortable Identifier (ULID) is a modern alternative to UUIDs. While UUIDs are widely used, they can be inefficient for database indexes because they are entirely random.

ULIDs solve this by embedding a timestamp in the first 48 bits, followed by 80 bits of randomness. This makes them lexicographically sortable (they sort chronologically).

Benefits of ULID over UUID

• Sortable: Chronologically sortable, meaning you can order by ULID instead of a separate `created_at` field.
• Shorter: 26 characters compared to UUID's 36 characters.
• URL Safe: Encoded using Crockford's Base32, which doesn't include hyphens and is safe to use in URLs without encoding.
• No Special Characters: Avoids ambiguous characters like I, L, O, and U.

Privacy Note

Since all generation is performed entirely in your browser using JavaScript, these ULIDs are never sent or stored on any server.