ULID Generator
Generate ULIDs - 26-character, lexicographically sortable, URL-safe identifiers.
Fill in the form and press “Generate ULIDs” to see the result here.
How to use it
- 1Paste your input into the input box, or type it directly.
- 2Adjust the options if you need something other than the defaults.
- 3The result updates as you type.
- 4Copy the result to your clipboard or download it as a file.
About the ULID Generator
A ULID is 26 characters of Crockford base32: 48 bits of millisecond timestamp followed by 80 bits of randomness. It sorts chronologically as a plain string and contains no characters that need URL escaping.
Crockford base32 excludes I, L, O and U, which removes the characters people confuse when reading an id aloud or typing it from a screen.
Questions people ask
Is your code uploaded to a server?
No. This tool runs entirely in your browser using standard web APIs, so your code never leaves your device. You can confirm it by opening your browser's network panel while the tool runs, or by disconnecting from the internet after the page has loaded.
Is it free, and do I need an account?
Yes, it is free, and there is no account, no sign-up and no watermark on the result. The project is funded by optional donations.