@JSWolf: Thanks for the suggestion. KindleUnpack certainly gives a cleaner result and the post-extraction tidyup is minimal but it does take a lot longer than calibre conversion and is more manual.
If I was retired and had the time then I would definitely use unpacking but right now the pragmatic approach is conversion: calibre gets the job done quickly and the final displayed results are just as good as the unpack method.
Filename tidyup is simple enough as I have a small epub post-processor plugin which can do this, (as well as applying a set of predefined regexes).
The stylesheet rem unit is subtly different to em and should be able to be left as it is, provided that the ePub 2 spec implements it. A blanket change of rem to em could mess up the rendering.
Last edited by Agama; 10-21-2018 at 12:05 PM.
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