calibre [1] is also a pretty good open source tool, however there is a bit of work involved to convert html pages into epub. [1] https://manual.calibre-ebook.c

calibre [1] is also a pretty good open source tool, however there is a bit of work involved to convert html pages into epub. [1] https://manual.calibre-ebook.com/faq.html#how-do-i-convert-a-collection-of-html-files-in-a-specific-order https://manual.calibre-ebook.com/faq.html#how-do-i-convert-a...