Specifically for wikis, is there a reason you wouldn't use Kiwix? For non "official" releases it's more complicated, but there are some services to generate the ZIM files. The desktop reader app is pretty good in my experience.

https://wiki.openzim.org/wiki/Build_your_ZIM_file

EDIT: https://get.kiwix.org/en/solutions/applications/kiwix-reader...

Kiwix has readers for almost every platform, Android, desktop, iPhone. That's why I made Kage produce ZIM file.

The executable file is mostly for people who don't have Kiwix installed yet, or just want to run the archive directly.

Thanks, never knew about this and great to hear about it.