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Code: PDF files are not built in HTML. They are created with proprietary code and must usually be edited in the original source file.
DRM: PDF files can be encrypted with Adobe Content Server or they can have a password applied. Devices: PDF files can be read on most eBook devices in the market, but none of the eBook retailers will sell a PDF to consumers. |
Supported on iPC Portals through
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Mobipocket |
DRM: The Mobipocket format allows books to be locked with Digital Rights Management (DRM) or not. When an encrypted file is downloaded from a retailer it is locked to the user’s registered device. The Kindle devices use the same DRM, but files bought from Amazon cannot be read in old Mobipocket reading applications.
Devices: Kindle eBooks can be read on any of the Kindle devices, as well as in any of theKindle Apps. Extensions: Mobipocket/Kindle files come in three different file extensions: .mobi, .prc, and .azw. There are no functional differences between these formats, and the files themselves are exactly the same. Note: Joshua has written the most authoritative book on formatting books for the Kindle in the Mobipocket format. Check out our Kindle Formatting website for more information. |
Not Supported on iPC Portals |
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KF8 |
DRM: Kindle Format 8 allows books to be locked with Digital Rights Management (DRM) or not. When an encrypted file is downloaded from Amazon it is locked to the user’s Kindle device. This DRM cannot be applied by anyone except Amazon.
Devices: KF8 eBooks can be read on any of the Kindle devices, as well as in any of theKindle Apps. Extensions: Kindle files come in three different file extensions: .mobi, .prc, and .azw. There are no functional differences between these formats, and the files themselves are exactly the same. |
Not Supported on iPC Portals |
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ePub2 |
Code: ePub2 files are built in XHTML 1.1 and CSS2. Some reading systems are able to handle the formatting better than others.
DRM: The most popular DRM option for ePub files is Adobe Content Server, which is utilized by Barnes & Noble, Sony, Kobo, and many other eBook stores. Apple’s iBooks application (on the iPad) utilizes Apple’s own Fairplay DRM, which is not compatible with any other eBook device or application. Devices: ePub2 files can be read on most eBook devices in the market, with the exception of the Kindle platform. Formatting: ePub2 files are natively reflowable. Apple created a fixed layout extension to ePub2 that is still widely used for children’s eBooks, but that is not part of the official ePub2 specification. |
Supported on iPC Portals through
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ePub3 |
Code: ePub3 files are built with XHTML5 and CSS3, along with some special styling options that are unique to the ePub standard.
DRM: The most popular DRM option for ePub files is Adobe Content Server, which is utilized by Barnes & Noble, Sony, Kobo, and many other eBook stores. Apple’s iBooks application (on the iPad) utilizes Apple’s own Fairplay DRM, which is not compatible with any other eBook device or application. Devices: ePub3 files are best supported in iBooks, but they can also be read in other reading systems. Formatting: ePub3 files are natively reflowable, but there is also a fixed layout option that can be used for children’s eBooks and non-fiction fixed layout eBooks. |
Supported on iPC Portals through
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NOOK Kids |
Code: NOOK Kids files are built in a proprietary tool with a PDF file or page images as the base content.
DRM: B&N applies their standard Adobe DRM to these files at ingestion. Devices: NOOK Kids files can only be read in the NOOK tablets and in certain NOOK applications for devices like the iPad. Formatting: This is a fixed layout format designed specifically for children’s eBooks. It is not an appropriate format for non-fiction or other kinds of content. |
Not Supported on iPC Portals |
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iBooks Author |
Code: iBooks Author files are built in a proprietary tool. The code is essentially HTML, CSS, and JavaScript, but that code is not editable by the creator.
DRM: iBooks Author files do not have built-in DRM, but the FairPlay DRM can be applied by Apple when the file is sold in the iBookstore. Devices: iBooks Author files can only be read in the iBooks application on its supported devices. Formatting: Fixed layout is the default design option for iBooks Author files, and most books will be designed in fixed layout. The reflowable option in iBooks Author files is mainly used as a backup that allows a fast overview of the book contents. |
Not Supported on iPC Portals |
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