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Old 03-14-2018, 08:54 PM   #1
JSWolf
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Font size difference between ePub & kepub

What is the difference between a font size in ePub and a font size in kepub with no font size set in CSS and the both sliders set exactly the same? If I want to read kepub, I have to adjust the font size and then adjust it back. If I know the size difference, I can leave the slider and set the font size in kepub to compensate. Thanks.
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Old 03-14-2018, 09:31 PM   #2
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Are you already using the 'Modify CSS' option in the calibre driver with a kobo_extra.css file on your H2O? If so, I found the easiest way to apply the font-size change is by adding an extra line to the kobo_extra.css file so it automatically gets added on-the-fly during send-to-device:
Code:
body>div#book-columns>div#book-inner {font-size:1.5em}
This works well on my H2O (and GloHD) and I don't need to keep changing the slider when I switch between epub and kepub. Surprisingly the KA1 'just works' without needing to do any kind of font-size adjustment.
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Old 03-15-2018, 08:11 AM   #3
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Depends on the device. One of them, (I think it was the A1, but I'm not sure) has almost identical font size between Epub and Kepub... others vary wildly.
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Old 03-15-2018, 12:04 PM   #4
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Would it not be easier to just put the font size in body for the kepub?

I'm thinking of giving kepub another go, but only if I don't have to keep switching the font size.

Last edited by JSWolf; 03-15-2018 at 12:11 PM.
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Old 03-15-2018, 12:48 PM   #5
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Quote:
Originally Posted by JSWolf View Post
Would it not be easier to just put the font size in body for the kepub?
Well that depends as only you can decide what is 'easier'.

Are you planning to:
  • Convert your epub to kepub in calibre and store both formats in the library. You've always expressed a dislike for unnecessary conversions.
  • Hand edit every kepub CSS. Neither calibre Editor nor 'Unpack book' will open .kepub so you'll have to use another method.
  • Use calibre send-to-device for transfer.

The way I suggested was:
  • Create/edit existing kobo_extra.css (in Kobo root dir) once then forget about it. The addition I suggested will not interfere with your standard epubs if you plan to read a mix of epub and kepub.
  • Use KoboTouchExtended driver with both 'Modify CSS' and 'Enable Extended Kobo features' checked to format-shift epub to kepub and scale up the font-size during send-to-device. Your calibre library remains uncluttered with kepubs and your master epub remains suitable for both Kobo and any other epub reading app you use.

The choice is yours
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Old 03-15-2018, 12:56 PM   #6
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I was thinking of giving a try to kepubify to see how it goes. I can add extra CSS with kepubify. So I can can try your CSS and see how it goes.
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Old 03-16-2018, 02:36 AM   #7
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Quote:
Originally Posted by jackie_w View Post
  • Hand edit every kepub CSS. Neither calibre Editor nor 'Unpack book' will open .kepub so you'll have to use another method.
If you are running calibre from source, solving that is a two line change.
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Old 03-16-2018, 07:50 AM   #8
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Quote:
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If you are running calibre from source, solving that is a two line change.
Good to know should I ever find a need to use either of them regularly for kepubs.

I don't think JSWolf runs from source, though.
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Old 03-16-2018, 01:37 PM   #9
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Would it be possible to add this as an option in the KoboTouchExtendedDriver? Thanks.
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