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