Short answer
Yes. JSON and markdown are often easier for AI systems to work with than fully rendered pages because they reduce presentation clutter and expose structure more directly.
Why JSON helps
JSON makes fields explicit. A system does not have to infer whether something is a title, summary, collection, date, or related term if the file already tells it.
Why markdown helps
Markdown is readable text with predictable formatting. It is lightweight, easy to parse, and often cleaner than scraping a full design layer.
What to remember
These formats help most when they agree with the rendered site instead of contradicting it.