It’s called “alt text” because slowing down to write it alters your perception of your photos, how they are seen, and your relationship to broader Fediverse. Start writing alt text and your very reality will be altered.
Welcome… to Fedi Vale.
If you have a fediverse account, you can quote this note from your own instance. Search https://beige.party/users/maxleibman/statuses/116195783368153037 on your instance and quote it. (Note that quoting is not supported in Mastodon.)