
: Re: What are the different file formats that eBooks are available in and which of these is most widely supported? I am a beginner to eBooks, and as somebody who has been "outside" of eBooks I've
EPUB. An open standard that is supported by most low-cost and free e-readers. But Kindle doesn't support this natively, you have to install a 3rd party reader to read EPUBs on your Kindle device. EPUB v3 supports embedded audio, embedded video, and many more options, but few readers support the fancy 3.0 stuff because it makes the EPUB file so huge. Widely supported by many authoring tools like Pandoc, Calibre, etc.
MOBI. Kindle only. Free authoring tools are generally terrible and very time-consuming fixing bugs and inconsistencies.
DJVU. Another older proprietary format.
Any book I get is either EPUB, or I convert it to EPUB. I also use Markdown and Pandoc for authoring EPUB books. It's pretty easy and fast, and it works well.
NOTES:
Any pictures that are color in the EPUB will be rendered as gray scale on B&W screens, like the Kobo Aura H2O.
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