How to assign alt text to current inline images Let me set the scope first, these images are not uploaded from an image field, they are uploaded from CKeditor, via imce or ckeditor_image2. Therefore, they are in node body, together with other text (isn't that the worst scenario you can imagine?). 
Now how do I approach this accessibility improvement after already having hundreds of potential images without alt text.
You can use my module Image auto ALT Filter in this case
https://www.drupal.org/project/image_auto_alt_filter
Only enable this filter for your text format, and all images will be with ALT tags. ALT generates from text keywords (I'm going to add some features in next release)