When linking to other threads it just doesnt generate an unfurl, most likely because a guest cant see that thread so the metadata cant be collected
On another note, I see your pictures are direct embeds and not linked embeds. You need to use medium linked embeds for a few reasons:
- They will get no views on jpg.fish and will get deleted when the cron is next run, this is to stop people abusing jpg.fish as a personal backup filling up its servers with no intent to share content i.e. the content gets 0 or very low views.
- You are forcing users to load full size images into their device memory, rather than a reduced size version of each picture, this both eats up their bandwidth / memory making pages slow but also...