This DOCX file will not contain any edits made using Kindle Create. (Note: Starting with version 1.70.0.0, Kindle Create has the ability to export reflowable books in EPUB format, eliminating the need to convert from KPF format in order to obtain a usable copy of the finished book.)īy default calibre will extract the embedded Word document from KPF files that contain one and import the file as DOCX instead of KPF. This plugin allows conversion from KPF to other e-book formats. See "DRM Concerns" below for more information.Īmazon's Kindle Textbook Creator and Kindle Create software export books in KPF (Kindle Package Format), a variant of KFX, for publishing on Amazon.
Monolithic KFX can be converted to other formats using this plugin.ĭRM removal for KFX format is only possible in specific situations, limiting the usefulness of this plugin. Monolithic KFX can also be produced using the KFX Output plugin. See "Importing KFX books into calibre" below for instructions. This plugin will combine the individual files that make up a KFX book into a single file (monolithic KFX format) when a KFX book is successfully imported into calibre. KFX container files typically have a ".kfx" extension, though other extensions (".azw", ".azw8", and ".azw9") are used by some software. Those each contain only part of the book's content and cannot be converted individually. See the thread Dealing with Kindle for PC/Mac 1.19 and KFX in calibre for details.īooks in KFX format delivered by Amazon are a bundle of files composed of an encrypted main container, a metadata container, auxiliary containers (zero or more) and a DRM voucher.
Some cases where KF8 is not available are Arabic, Indian and Traditional Chinese language books/dictionaries, books produced using Kindle Create, Kindle in Motion books with animation, Interactive Textbooks with A/V media, and some newer eTextbooks. This plugin has limited usefulness as long as KF8 is still easily obtainable. More information about the KFX format can be found in the KFX Format thread and the MobileRead Wiki (KFX).Īmazon's KF8 (azw3) format is superior to KFX as a source for conversion since it more closely matches the original format provided to Amazon by the publisher. It supports advanced features, including Enhanced Typesetting and Page Flip, on Amazon apps and devices. The plugin can convert from several KFX variants: Monolithic KFX, KFX-ZIP, KPF, or Scribe notebook.Īmazon uses KFX format for the delivery of most e-books to customers. The KFX Input plugin allows books in Amazon KFX format to be imported and converted to other e-book formats, such as EPUB, for archival and for reading on alternate devices.
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