![]() See the Kindle Paperwhite screenshot below featuring two equation images scaled to the same size, which results in the longer equation (bottom) being more heavily “shrunk” than the shorter equation (top). Optimizing image size can also be challenging. However this approach is far from ideal, because when implemented as images, mathematical equations are not searchable or resizable by readers. Because Kindle’s KF8 format does not support MathML (a XML vocabulary for markup of math content that is part of the HTML5 specification and supported to varying degrees in different desktop and mobile Web browsers), the only viable typesetting option for including complex equations, matrices, etc., in ebooks is to embed the math content as images. High-quality typesetting of mathematical equations is a challenge in most digital formats, and Kindle is no exception. ![]() ![]() Here’s hoping that by this time next year, embedded audio/video is supported on every Kindle tablet device, and that KF8 is supported on Kindle for iOS. Those Kindle readers who opt to buy a Fire over an iPad are penalized by not being able to view embedded video in ebooks, and those who opt to instead read their ebooks on Kindle for iOS are penalized with a lower-quality reading experience, as embedded fonts and many key CSS features will not be supported. As a result of this discrepancy-Kindle Fire supports KF8 but not audio/video, and Kindle for iOS supports audio/video but not KF8-there is no single Kindle platform that supports all the ebook features that Amazon offers. Given that support for streaming multimedia content via Amazon Instant Video is such a highly touted feature of Kindle Fire, it’s rather surprising that Amazon has not been more assiduously pursuing support for embedded multimedia for Kindle Fire ebooks. Kindle e Ink devices and Kindle Fire do not support Kindle Editions with Audio/Video.” Nearly 12 months later, the Kindle Publisher Guidelines still read, “Currently, only Kindle for IOS supports audio and/or video content. When KF8 was introduced in early 2012, support for audio/video was not included in the format-even though MP3 audio and MP4 video were already supported in Kindle for iOS. ![]() Add support for embedded audio/video to Kindle Fire Here is my humble *** wish list of improvements for the Kindle platform for 2013: 1. The subsequent rollout of KF8 to Kindle eInk readers running firmware 3.4 (including the new Kindle Paperwhite) and KF8’s support for queries to enable fallback styling for non-KF8 devices helped to increase rendering parity within the diverse Kindle ecosystem.īut while 2012 marks a huge leap forward toward the incorporation of modern Web standards into the Kindle platform, there is still much room for improvement in terms of multimedia/interactivity, content rendering, and ease of ebook development. KF8 also greatly increased CSS2 compliance for standard reflowable ebooks, implemented a handful of CSS3 features (text shadow, rounded borders), and added support for embedded fonts. KF8 introduced a fixed-layout specification for Kindle Fire, which opened the door to graphically rich titles-children’s books, graphic novels-in Mobi format. ![]() With the unveiling of the first-generation Fire tablet in late 2011 and the release of the KF8 Mobi format in early 2012, designing beautiful ebooks for the Kindle platform became a reality. 2012 was a good year for Kindle developers. ![]()
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