Not sure about Windows or Linux, but on Mac, the epub version is shown in the title bar, e.g., "Sigil_User_guide_2021.03.15.epub -
epub2.0 - Sigil"
Converting epub2 to epub3 is done with KevinH's nifty
ePub3-itizer plugin
Quote:
Originally Posted by Banjo
...
BTW, how does one translate an existing EPUB2 into EPUB3?
And how does one find out which format an existing book is in?
I don't see anything obvious in the menus.
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