Mastodawn

#Alttext is not mandatory on the #fediverse but is highly recommended.
https://www.howtogeek.com/821673/what-is-alt-text-why-you-should-use-it-and-how-to-write-it/

What Is Alt Text? Why You Should Use It, and How to Write It

An article about the descriptive text in web content.

How-To Geek