Mastodon users, new and old:
You can add a caption, or alt-text, to images you toot!
These captions make your toots more accessible, by giving people who can't see the image a description of what's in the image.
Just hover over the image over you attach it and type a description in the spot that says "Describe for the visually impaired" before you hit the TOOT! button.
Please also encourage Mastodon app authors to add caption functionality. And please boost. Thanks!