I use the htmlz format all the time. Primarily because it does merge all the ebook pages into a single html file. I run tidy on that to clean it up. I know there could be cases where different css files and inline styling could conflict, but I haven't run into that yet. The nice thing about htmlz is that you get one big index.html file that you can then edit instead of all the individual page files. I change the (whatever) html to html5 usually, and eventually convert back to an epub with Sigil. However, if Sigil could create an htmlz file, I would use that, because of one very important issue with Calibre's conversion: it changes all the photo names each time it converts! So, once I get an htmlz file, I stay with it and don't let Calibre touch it again, so the photo names are left alone.
|