Descriptive alt texts on images are important, but in TinyMCE the field is called «Image Description». You can change that!
When publishing images online, it's important with good alt-texts. Episerver has a bug that, by default, creates very unhelpful alt-texts. I explain, and present a workaround.
I made a module for Episerver CMS that uses Microsoft Azure Cognitive Services Computer Vision API to generate automatic metadata for uploaded images.