Currently Raindrop only backs up bookmarks. It does not seem to back up the contents of the bookmarks, neither images nor files.
  • When images have been uploaded directly to Raindrop, the backup has nothing. It does not recognize it as a bookmark.
  • When images have been bookmarked from a website, the backup is only a URL link.
Understandably, a full backup would create a high load on the servers, but Raindrop could limit this form of backup to once every few months, or make it a premium+ feature. Personally it's an extremely important feature for me as I use Raindrop for images, and usually upload directly to Raindrop's servers to avoid any issues if websites go down