I don’t think it really works directly presently, at least not for all instances. I’m just using the spoiler tag, or body for alt-text on lemmy at the moment. That probably needs to change before bots can be useful (if I’m not wrong about this).
EDIT: Meh, never mind me, I don’t know enough about direct alt-text on lemmy.
The text isn’t supposed to show up. It’s alternative text for viewers that can’t see the image (or otherwise need it described).
I don’t think it really works directly presently, at least not for all instances. I’m just using the spoiler tag, or body for alt-text on lemmy at the moment. That probably needs to change before bots can be useful (if I’m not wrong about this).
EDIT: Meh, never mind me, I don’t know enough about direct alt-text on lemmy.
https://lemmy.sdf.org/post/485977