Custom properties include oeb-page-head, oeb-page-foot, and oeb-column-number.
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Font-embedding can be accomplished using the font-face property, as well as including the font file in the OPF's manifest see below. Other media types are allowed, but creators must include alternative renditions using supported types. However, reading systems are not required to provide the fonts necessary to display every unicode character, though they are required to display at least a placeholder for characters that cannot be displayed fully.
The OPF specification's purpose is to " The OPF file, traditionally named content. This file has a root element package and four child elements: metadata, manifest, spine, and guide. Furthermore, the package node must have the unique-identifier attribute. The metadata element contains all the metadata information for a particular EPUB file.
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Three metadata tags are required though many more are available : title, language, and identifier. The identifier 's id attribute should equal the unique-identifier attribute from the package element. The manifest element lists all the files contained in the package. Each file is represented by an item element, and has the attributes id, href, media-type.
Only the. Also, any content document that can be reached through linking or the table of contents must be listed as well.
The toc attribute of spine must contain the id of the NCX file listed in the manifest. Each itemref element's idref is set to the id of its respective content document. The guide element is an optional element for the purpose of identifying fundamental structural components of the book. Each reference element has the attributes type, title, href. Files referenced in href must be listed in the manifest, and are allowed to have an element identifier e.
It must also be uncompressed, unencrypted, and the first file in the ZIP archive. This file provides a more reliable way for applications to identify the mimetype of the file than just the. This XML file points to the file defining the contents of the book. This is the OPF file, though additional alternative rootfile elements are allowed.
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EPUB 3 consists of a set of four specifications: . This could affect the level of support for various DRM systems on devices and the portability of purchased e-books. An EPUB file is an archive that contains, in effect, a website. It also contains metadata. EPUB 3 is the latest version. By using HTML5 , publications can contain video, audio, and interactivity, just like websites in web browsers.
An ePub publication is delivered as a single file. This file is an unencrypted zipped archive containing a set of interrelated resources. The file system model uses a single common root directory for all contents in the container. All non-remote resources for publications are in the directory tree headed by the container's root directory, though EPUB mandates no specific file system structure for this. The first file in the archive must be the mimetype file. It must be unencrypted and uncompressed so that non-ZIP utilities can read the mimetype.
This file points to the file defining the contents of the book, the OPF file, though additional alternative rootfile elements are allowed. An example container. The ePUB container must contain: . Content documents include:  HTML 5 content, navigation documents, SVG documents, scripted content documents, and fixed layout documents. Books with synchronized audio narration are created in EPUB 3 by using media overlay documents to describe the timing for the pre-recorded audio narration and how it relates to the EPUB Content Document markup.
Many editors exist including calibre and Sigil , both of which are open source. From Wikipedia, the free encyclopedia.
E-book file format. For publications that are accessed electronically, see Electronic article.
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Retrieved January 12, Oct 15, Book Industry Study Group. Retrieved 18 September Retrieved September 4, Retrieved February 21, April 21, Archived from the original on August 31, Retrieved October 9, Retrieved 10 July Retrieved 11 October March 29, Archived from the original on January 13, Retrieved October 8, International Digital Publishing Forum. Retrieved 11 September This opens a dialog box. Enter the URL you want to link to in the Address field.
Add footnotes. Footnotes in your eBook must have working links so readers can click easily from content to footnote and back. Place your cursor where you want the footnote to appear. On the References tab, click Insert Footnote. The cursor will jump to the footnote section at the bottom of the page. Enter your footnote here. When your upload your eBook, the footnotes will be automatically converted to endnotes. Insert images. We recommend inserting images with Kindle Create , which is explained in step 3 of this guide. Kindle Create can help you insert and edit the size and alignment of your images with preset options based on professional book layouts.
Prefer to do it yourself? Here are our top tips for adding images in Word: Insert images at their original size. Insert images into your file; don't cut and paste. After you insert your images, don't enlarge them because this will decrease the resolution. We also recommending adding a single line of space before and after images. To insert an image: Go to the Insert tab.
Under Illustrations , click Pictures. Select the file from your computer and click Insert.
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Check your device settings. Most cameras and scanners offer high-resolution settings. Make sure they're set to high resolution before using them. Turn off image compression. To reduce file size, Word is set to compress images. To change the setting: Go to the File tab and click Options. Under Advanced , find Image Size and Quality. Check the Do not compress images in file box. Check the image resolution.