Quote:
Originally Posted by cybmole
as I currently understand things there are a couple of reasons for needing to convert to same format e.g. to run mobi to mobi or epub to epub.
one is to force the inclusion of metadata which was edited or downloaded after book was added to library.
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Using the features of
Send to Device,
Save to Disk, or
Connect to folder will insert metadata. No need for a conversion for inserting metadata.
Quote:
Originally Posted by cybmole
the other is to force the application of header/footer rules or any other custom rules
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Most folks that use these rules apply them during the initial conversion from Mobi to ePub or vice-a-versa. But yes converting epub to epub you can use this rule.
Myself, if I already have the books as a epub with acceptable formatting, then I will open it in Sigil to handle headers/footers.
Quote:
Originally Posted by cybmole
2. will anything be downgraded - as I understand things the conversion will go e.g. out of mobi to an intermediate format, than back into mobi -so is anything lost in that process ? ( my mental analogy is with video formats - where this would be a bad thing )
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There are certain options that can drastically alter your book during conversion. If you want to minimize any changes then on the
Preferences -
Common Options -
Look & Feel page check Disable font size rescaling and leave everything else unchecked. On the
Structure detection page leave Preprocess input file to possibly improve structure detection unchecked.
As FizzyWater stated if it matters that much keep a backup because a epub - epub conversion will overwrite the existing epub book in the library.
That said, I always do font size rescaling and both remove spaces between paragraphs/add indent and insert spaces between paragraphs. Experiment to see what you're comfortable with.