empty object, warn - OBJECTS_OR_SCRIPT-5
whitespaces, FAIL - OBJECTS_OR_SCRIPT-6
no type attribute, warn - OBJECTS_OR_SCRIPT-8

Alternative text
the mime type of the retrieved resource, as indicated by its Content-Type HTTP header does not match that stated in the type attribute, warn - OBJECTS_OR_SCRIPT-9

Alternative text
the Content-Type of the retrieved resource is neither image/jpeg nor image/gif, warn - OBJECTS_OR_SCRIPT-10

Alternative text