When I was preparing my wife's books I used Sigil to tweak the xhtml files from the epub exported from LibreOffice. One can produce epub2 or epub3 versions from Sigil and was easy to use. We wanted to produce an epub to the standard which could be read on apple books, the kobo and the kindle. I had to adjust the xhtml files since none of them implemented the epub standard exactly so I ended up preparing three different versions. However, apple, kobo, and kindle documented where they differed from the standard so it wasn't too onerous a job. The Kindle version was prepared from an epub using kindle previewer.

Best wishes

Keith McKay

On Sat, 24 Aug 2024, 18:08 Hans Hagen via ntg-context, <ntg-context@ntg.nl> wrote:

On 8/24/2024 6:25 PM, Henning Hraban Ramm wrote:

> Unfortunately, the ePub at least doesn’t work with Calibre. I need to
> check what’s actually the problem.
Indeed we need to check the current state ... at that time there weer
variations of the 'standards' and various devices expected different
(maybe also deliberately, some lock in).

Mikael and I are currently updating the export (web first) so when we
reach updating that bit it would be helpful to know what to do better.

Hans

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