...ok so now I see that some of you are doing alt text but like...barely. "this is a page of text" is not good alt text. Imagine that you can't see the page of text! you can't read what's on it! It is more helpful to transcribe and describe. This is on the level of "Funny photo" alt-text. not great!
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It's like a poet's cheat code!
For example, I wrote ALT text for the below post, but sighted users won't know it's there (blind users will, fortunately).