Thread: What is the best way to replace all my calibre kepubs with kepubify ones?
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Old 12-05-2018, 05:58 PM   #9
davidfor
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Quote:
Originally Posted by Carmelocotonto View Post
But I have copied the book 'milibro.kepub' to kobo (without calibre) and does not recognize it. Ebooks ends '.kobo' are not into library. Why do you rename kepub.epub to .kepub?
Using the double extension of ".kepub.epub" is a convention on the Kobo devices. I don't know of anything else that would recognize it (except maybe kepubify). Using it elsewhere is difficult as most OSes and applications are only looking at the actual extension when determining file type.

But, calibre doesn't actually have any restriction on the file type. You can add anything to the library and it will do most of the basic functions. That means that if you change the title or author in the metadata, the file will be renamed just as an epub will be. But, you cannot do things like convert the book, get metadata from it or update the metadata. For these functions, you need plugins. The plugins can be included in the base calibre, or user written plugins. For kepubs, the plugins needed to give full support have been created. And when they were created, the extension "kepub" was adopted. And the drivers know to rename the files when they are sent to Kobo devices.
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