@Laberpferd Interesting idea!

Personally I prefer the image description to be "with" the image, but I'd love to hear from folks who actually use screen readers, if this makes a difference to them.

Also, interestingly, there is a way to embed the description in the image file itself, which would be great for sharing the same image via different channels, it's just not very widely used.

https://community.adobe.com/t5/illustrator-discussions/embedding-alt-text-in-an-image-file/td-p/14135973

@AlinaLeonova