Quote:
Originally Posted by haydnfan
Why? I haven't read any epubs on my Kobo ereaders. What does it offer that kepub does not? I was under the impression that pages per chapter (my favorite progress setting) was only available on kepub. And the adjustable font weight was also only available on kepub. Are these true? If that is then for me kepub is the superior format on Kobo.
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(Edit: Adjustable font weights work in the ePub reader too.)
It will depend a lot on your reading preferences (justified vs ragged-right, line spacing, etc.) and which features are more important to you, but these are a few of the reasons I prefer the ePub reader over the KePub reader:
Justification: The KePub reader often fails to justify the line properly if it contains a word-joining character such as em-dash or ellipsis, and can add extra space after some characters such as right-double-quote resulting in uneven word spacing. The ePub reader can both reduce or increase the word spacing to justify the line, but the KePub reader only ever increases the spacing.
Hyphenation: The KePub reader doesn't properly handle some word-breaking characters such as forward slash, so you can end up with a hyphen added after a forward slash. The KePub reader doesn't read the settings from the hyphenation dictionary correctly (this problem can be worked around by editing the hyphenation dictionary, but it is still a problem if you want to read both KePubs and ePubs.)
Line spacing: The KePub reader chooses the wrong page break position if the line spacing is narrower than a certain level (depends on font used), which can result in part of a line being split between pages.
Page breaks: The KePub reader doesn't support these CSS styles: @page, orphans, widows, page-break-before, page-break-after, and (most important IMO) page-break-inside.
Ligatures: The KePub reader doesn't support ligature substitutions. (There is a patch to enable, but it has bad side-effects on justification.)
Full screen mode; The KePub reader has a number of problems in full-screen mode. (There are patches to fix some of them, but not all.)
(Some of these I can work around if I compromise, e.g. I restrict myself to fonts that don't depend on ligatures when reading KePubs.)