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.