Markdown makes sense but if I add rich media like images it won't be a self contained file.
Markdown is versatile enough to contain tables, images, headings etc. It also has low token overhead.
How can Markdown handle page breaks?
PDF is self contained but I want a tighter format that is quick to pull text and images from.
HTML is interesting, but again I want a restricted feature set - no JavaScript etc.
I am currently thinking about using zips containing Markdown files and image assets.
What are people reaching for in this space?