FictionBook

FB2 is supported by e-book readers, such as FBReader, AlReader, Haali Reader, STDU Viewer, CoolReader, Okular, Ectaco jetBooks, Documents for iOS, and some others. Firefox can read FictionBook2 by installing the FB2 Reader extension. Many hardware vendors support FictionBook2 in their firmware: BeBook One, BeBook Mini and BeBook Club in Europe (and other Hanlin V3 and V5 based devices), all PocketBook Readers, COOL-ER devices, Cybook Opus and Cybook Gen3, and ASUS Eee Reader DR900. Devices based on the Hanvon N516 design can read FictionBook if a custom OpenInkpot firmware is installed; it is factory default for Azbooka 516. Amazon's Kindle, Barnes & Noble's Nook, and Sony devices do not support FictionBook directly. Conversion to and from FictionBook2 files ( and ) is possible via the cross-platform eBook management software Calibre. Conversion to and from FictionBook2 format is also available via Pandoc. == FictionBook3 ==

FictionBook3 is a beta proposal to extend FictionBook2. In April 2017, LitRes announced its plans to bring a new “.fb3” format to the market. The new format was developed by LitRes Innovation at a cost equivalent to some US$10 million and is intended to answer a growing demand for high-quality ebooks in Russia, supporting complex layouts and large numbers of tables, lists, and illustrations. FictionBook2 and FictionBook3 differ in two respects: FB2 consists of a single XML file, with pictures being embedded as base64-encoded "binary" blocks, thus removing the need for additional files. FB3 has a directory structure similar to that of the ePub format and incorporates the layout and embedding of multimedia content. FB3 adds layout capabilities and removes the need to embed pictures as Base64 encoded blocks, but for the most part stays true to the concept established with FB2. As of August 2025 there were no updates to the beta spec since 2008 and no popular e-book reader software supports it. == See also ==