How to add image to a post only by means of using a tag ? (tag: image1 => image1.png in post)
It’s not quite what you are looking for, but you might be able to accomplish something similar with this approach: Generic bbcode wrapper for theme components.
What is the goal here? I am not sure I understand what this would be for, can you provide an example?
If a tag would add an image to a post immediately, then it would be appear in social media when someone makes a link (share it ) .
This means that every post has an image (based on the tag), then every posting in social media looks much better and can be promoted more easily.