+100 on this. I really need this feature.
I can preview attachments in Obsidian, but I find it so frustrating that I can’t tag them. The only option would be to put them in a note and then tag the note.
While browsing the web, I often save lots of screenshots—Tumblr reblog chains, twitter threads, reddit posts, etc. And Instead of just letting them gather dust in my folders, I’d like to be able to meaningfully connect them to notes or other attachments in Obsidian