Possibility to insert and customize ALT text for photos
As suggested, I insert the request in this section.
Since it's very important for the images SEO, it's a big lack for a site like SM, aimed at the photos. It's essential that you can customize it.
At the moment the Alt text is taken from the first words readen in the captions (if the text is long, the rest of the caption text is not used). This if you've entered captions, otherwise you don't have Alt text in the photos.
Anyway it's not the same thing since the optimization and structure of the Alt text is different from the captions.
It would be fundamental to have the possibility to insert Alt text in a separate box, apart from the caption box.