How does the alt text just saying "image/jpeg" happen? Is some Mastodon client being stupid and automatically adding that? I can't imagine anyone typing that in on purpose

Oh, wow, now I know that this image is a JPEG, fascinating information

@vaporeon_ seems to be one of the valid "media types", which probably has something to do with it https://www.iana.org/assignments/media-types/media-types.xhtml

@wallhackio I'm aware of those (though I know them under the name "MIME types"), what confuses me is how it ends up in the alt text for example here: https://glaceon.social/@josephbenton@monads.online/116857763070771399