About ULID Generator
This tool generates ULIDs (Universally Unique Lexicographically Sortable Identifiers) in batch. A ULID is always 26 characters long and combines uniqueness with time-sortable ordering for practical engineering workflows.
Core Features
- Generate 1 to 100 ULIDs in one run.
- Switch between Raw and JSON output formats.
- Refresh instantly to create a new ULID batch.
- Copy the current output with one click.
- Save amount and format settings in local browser storage.
How To Use
- Enter an amount between 1 and 100.
- Select Raw or JSON output format.
- Click Refresh to generate a new ULID list.
- Click Copy Result to copy the output.
Typical Use Cases
- Database primary keys and business identifiers.
- Distributed system event and log tracing.
- API debugging and automated test data preparation.
- Any workflow that needs sortable unique IDs.
FAQ
What is the difference between ULID and UUID?
ULID keeps lexicographical sortability, which is useful for time-ordered lookup. UUID is widely used but is not inherently sortable in most common forms.
Why is the maximum amount set to 100?
The limit keeps generation, rendering, and copy actions responsive in browser-based usage.