[RustingSword]

I use Zotero with [Zotero Connector](https://www.zotero.org/download/connectors) plugin for Firefox. When saving a webpage to Zotero, it will also save a snapshot of that webpage (a configurable option in Zotero preferences). I tried it with latest two Distill posts, and didn't see any missing images. Actually for those interactive images, there will be a static version and an interactive version of that image in the snapshot, which is acceptable for me. Another problem more annoying is that those inline citations will show up even if you don't hover over them, thus covering underlying texts.

[Reelin]

Forgot to mention originally, but I did try Zotero's snapshot feature. It seems to work better for some papers than others - the activation atlases one (https://distill.pub/2019/activation-atlas/) is particularly bad. As you note, the hoverable citations and notes are also a problem.

It's not that I have any pressing need for offline copies at this precise instant, but they have proven useful on a number of occasions.