I had a thread about this about three months ago and I considered tacking this onto the end, but I decided to start over. Here's the old thread: https://www.writingforums.org/threads/epub-conversions.169131/ As described three months ago, I have experimented with multiple programs that will convert a Word .docx file to .epub, and all of them have failings. The worst by far is Microsoft's Word to ePub converter. The best seems to be SoftMaker Textmaker, a German word processing program. I've just encountered a mention of an ePub editor in an article that suggests using the program of your choice to create an ePub file, and then using Sigil to edit it, clean it up, and add any tweaks you might choose to add. It's supposed to work with EPUB2 and EPUB3 files, and it's cross-platform. https://sigil-ebook.com/ Does anyone know anything about this program? If so, I would very much like to hear your feedback. I just downloaded it -- haven't even installed it yet, but I'm hoping to try it out soon.