But if they upload multiple images to Mastodon, only the first one makes it here. And they can reply to comments on their post, but any images in said reply don't appear.

[–] xmunk@sh.itjust.works 5 points 2 days ago (1 children)

This feels like a lemmy-side issue and potentially one that would be solved by the rendering/app layer.

[–] Zagorath@aussie.zone 3 points 2 days ago (1 children)

I dunno, maybe. I've never really looked in to the ActivityPub protocol. I have heard accusations of Mastodon having an extremely non-standard implementation of it though, so it's probably a bit of both.

[–] xmunk@sh.itjust.works 3 points 2 days ago

Yea, it probably could be best solved through cooperation but the thing that springs to mind for me is that card responses for link unfurling have a standard way of presenting an image, or text, or an image embedded in text - but there's no standard (even an unofficial standard) way to clearly respond that the link unfurling should be multiple images in an arbitrary gallery ordering. If multiple images are returned in a card the context reads like a blob of text with multiple images in series.