ULID and NanoID generator
Generate modern sortable ULIDs or compact URL-safe NanoIDs, in bulk. Every id comes from your browser's secure random source (0 uploads, works offline).
How to use it
- Set the options above.
- Results generate instantly on your device.
- Copy or Download them.
FAQ
How do I generate a ULID or NanoID for free?
Pick the format and count, and ids generate instantly in your browser from a secure random source, with no upload. ULIDs are 26-character, time-sortable and case-insensitive; NanoIDs are short and URL-safe.
When should I use ULID vs NanoID?
Use a ULID when you want ids that sort by creation time (good for database keys and logs); use a NanoID when you want the shortest possible URL-safe id and do not need ordering. Both are collision-resistant.
Are they generated on a server?
No — entirely in your browser, so ids you take were never seen elsewhere. It works offline.
Do ULIDs really sort by time?
Yes — the first 10 characters encode a millisecond timestamp, so lexicographic order matches creation order.
Limits
Up to 1000 per run. ULID length is fixed at 26; NanoID length is adjustable.
Related
The UUID generator makes v4/v7 UUIDs; the API key generator makes prefixed secrets.
Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.