Thread: converticus repairus!
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Old 02-25-2021, 06:28 PM   #23
jackie_w
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Quote:
Originally Posted by luisdent View Post
I'm not an epub expert, but i am a technical supprt specialist very knowledgeable about all things computer, so I've done a fair bit of the expected troubleshooting before posting here. in fact many other sites shared similar epub vs kepub issues. kepub apparently simply adds its custom formatting via additionally span tags. but that additional formatting is supposedly what makes the typographical settings more fine tuneable.
  1. If you're having problems getting your epubs to respond correctly when you make changes in the Kobo's [Aa] font menu it's almost certain that the problem is with the HTML/CSS in that particular epub.

    The reason you see style differences between epub and kepub is that the 2 different (epub and kepub) reading apps on the Kobo use a different set of CSS override rules when you change the [Aa] settings. I won't go into detail here, but basically the epub app uses a delicate touch to use your settings to override the existing book CSS whereas the kepub app uses a sledgehammer. Which is the "better" approach depends on your personal point-of-view and the state of the HTML/CSS in your books. Various Kobo patches are available to make one more like the other.

    I don't know much about Kindles but I suspect Amazon also uses a sledgehammer approach. However, they also have lots of rules about what a book should/shouldn't do style-wise for the book to be sold in their Store. Some of the Amazon-specific stuff is a PITA if you're planning to read it as epub/kepub on a Kobo.

  2. The special koboSpans in kepubs are normally used for annotations, bookmarks and book progress. I've never bought one which used them for styling.
  3. As @Sirtel said, if you're having problems (bold and/or italic where it shouldn't be) with a sideloaded font the problem can usually be fixed by the info in that link. Pay particular attention to the info about panose weight. If you need to see some additional screenshots see this post from the original MR thread used for the Wiki.
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