nostr:npub14u236zuhv78m8sgznnclprmaff96v0vtm6q7ktex8ykz9pznxzhqypzq27 re alt text: in principle you can, it's probably just your app (megalodon can, for example).

Or in general: try on your website. The web UI is more likely to support any particular feature because it's also the host of the feature.