Found the instructions!
To require adding alt text before posting a picture on Bluesky, go to your Settings > Accessibility and toggle on the option "Require alt text before posting" - this will prompt you to add a description for any image you upload before publishing a post.
Comments
To require adding alt text before posting a picture on Bluesky, go to your Settings > Accessibility and toggle on the option "Require alt text before posting" - this will prompt you to add a description for any image you upload before publishing a post.
I hope this is helpful for other people too!
Thank you for sharing