Gentle reminder: there are many blind and partially sighted users on the fediverse, and alt text is important for accessibility. It's becoming more and more commonplace that people won't boost toots with media that's either undescribed or lacking in a call for help with the alt text.
I have a guide here on how to write alt text, a bot you can follow if you keep forgetting, and options for asking for help with alt text:
https://mastodon.art/@Curator/109279035107793247
Please, alt-text your media. :bear_hugs: