Demo on Codepen is broken
The check out the demo on codepen is currently broken.
ReferenceError: Hashids is not defined
I guess there should be some reference defined to the source, which is not there anymore.
BTW: The example from #39 is maybe even better than the current one?
Looks like the codepen needs to have the hashids and jQuery libraries added to the external scripts settings of that pen. Once I added https://cdnjs.cloudflare.com/ajax/libs/hashids/2.2.10/hashids.min.js and https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js it worked for me. @niieani you look like you were modify the website, are you able to update this or ping whoever would be able to? Ta :)

Thanks for the heads up and sorry - that's my bad for letting it become outdated.
Closing since the project is moving. The new website has a working demo/playground @ https://sqids.org/ (scroll to the bottom)