Quote:
Originally Posted by Bazzy123
... You mentioned that the default values are 6.96 7.92 8.4 9.36 10.56 11.52 12.48 13.92 15.36 17.04 19.2 22.08 25.2 29.28 and can be customized.
So, if the number on the slider is 8 (the 8th bar), that means the corresponding font size is 13.92? ...
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Yes
Quote:
Originally Posted by Sirtel
The custom font sizes don't work with KFX files (most books downloaded directly from Amazon). You have to sideload your books in AZW3 format.
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Good point. I had forgotten about that since I only read AZW3.
FONT_RAMP also won't work with mobi (but it does work with dual-mobi, i.e., a combined file containing both old mobi + AZW3).
@Bazzy123, you can learn more about avoiding KFX here:
https://www.mobileread.com/forums/sh...d.php?t=283371
To get a dual-mobi (which will work with Send-to-Kindle and WhisperSync as well as FONT_RAMP):
1) In Calibre, convert to MOBI-both (under conversion preferences > MOBI output)
2) Use KindleGen
or:
3) Take an epub, change the extension to .txt, and send that file via email/send-to-kindle. Amazon will run it through KindleGen for you and send AZW3. (In this method, it's best to use Send-to-Kindle rather than email, as Send-to-Kindle allows you to input the title & author. If you use email, Amazon will use the filename as the title and the email address as the author.)