I tried to use your utility but I have to admit to being unclear how to achieve the clean-up. I was able to create the initial htmlz file and to load it in the plugin and produce the patterns but I couldn't figure out how to proceed.
I have attached 2 htmlz files. The input
one is a tiny extract (to avoid copyright problems) from a mobi-to-htmlz conversion. The output
one is what I ideally would have liked as the cleaned-up simplified version. I would then be able to add my own standard external css file to match the tags (<h2>, <h3>, <p>, <i>) and classes ("ctr", "noind", "txt") in the cleaned-up index.html file.
Please could you tell me whether this is achievable with the current plugin, or even whether I could get somewhere close if I knew what I was doing