Doing it in markdown isn’t a great solution, that’s more for hover text then anything. Having a bunch of text in markdown Alt-text clogs the hell out of the post body and makes it harder to copy the raw markdown if you’re not trying to grab a fuck load of additional text.
Not sure what you mean. Just type the alt in markdown
[![alt_text_here](image.jpg)](https://example.com/some/page)
Doing it in markdown isn’t a great solution, that’s more for hover text then anything. Having a bunch of text in markdown Alt-text clogs the hell out of the post body and makes it harder to copy the raw markdown if you’re not trying to grab a fuck load of additional text.
See HTML Accessibility.