An EPUB document is essentially a zip file, so you can extract it, edit the contents using your preferred text editor, then compress the results into a zip archive. The actual text is just HTML or XHTML, so you should be able to use whatever text editor you would normally choose for editing HTML Web pages.
From: <firstname.lastname@example.org> on behalf of Juan Hernandez <juanhernandez98@...>
I have to edit and prepare some epub ebooks. Is there an accessible editor for this? Calibre isn’t that accessible.
Any ideas will be greatly appreciated.