[roneoo]

This firefox extension does a good job most of the time:

https://addons.mozilla.org/fr/firefox/addon/single-file/

This is for personal/offline backup in the first place. Do you need the possibility to share the archive?

[tusslewake]

I'm thinking more of an institutional solution, like if a research library or archive wanted to preserve the above article, with all of the original interactivity, for a viewer 20+ years from now, is there any kind of consensus on how to go about that?