A couple of weeks ago I announced "fossilphant", a program to turn your mastadon archive into a stand-alone static website. Here are my old instances, archived: interfluidity.com/microblog-ar + interfluidity.com/microblog-ar

I didn't get much feedback, wondered if having to clone or download the repository made it unwieldy for people to try.

So I've repackaged it into a single script. You need to install scala-cli, but then you can just download and run a single script. See github.com/swaldman/fossilphan