ULID Generator

Generate Universally Unique Lexicographically Sortable Identifiers. A sortable alternative to UUIDs.

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Generate Sortable and Unique Identifiers

Upgrade your database keys! Our ULID Generator creates Universally Unique Lexicographically Sortable Identifiers, offering a powerful alternative to traditional uuid strings. Unlike the random nature of UUID v4, a ulid includes a built-in timestamp, allowing your records to remain globally unique while naturally sorting by creation time. This is an essential id tool for developers building high-performance distributed systems where order and uniqueness are both critical.

The Modern Standard for ID Generation

Stop choosing between sorting and uniqueness. This generator produces 128-bit IDs that are compatible with uuid storage but offer better indexing performance. By using Crockford's Base32 encoding, every ulid is case-insensitive and avoids ambiguous characters, making them easier to read and share. Whether you're building a new API or refactoring a legacy id system, our tool provides the collision-resistant, sortable identifiers needed for modern, scalable data architectures.

Dev Fact: ULIDs are encoded using a specific character set that purposefully excludes the letters I, L, O, and U. This ingenious design prevents visual confusion between similar characters and, as a side benefit, makes it impossible for the generator to accidentally create common profanities in the ID string!

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