Convert EPUB to FB2 Free Online — FictionBook Format
Convert EPUB files to FB2 (FictionBook 2.0) format popular in Russia and Eastern Europe. Preserve chapter structure and metadata during conversion.
Converting EPUB to FB2 re-encodes the document into the FB2 container. Text, headings, tables, images, and basic formatting are preserved; advanced features (macros, comments, tracked changes) may not carry across all format pairs.
Max file size 50MB. Sign up for more.
| File Name | Size | Convert To |
|---|
Checking files and selected output formats.
| File Name | File Size | Download |
|---|
Convert EPUB Documents in 3 Steps
Move a document into a more shareable or editable format while keeping layout, text structure, tables, and embedded media intact where possible.
Drag and drop your EPUB file or click to browse. Supports text documents, reports, manuscripts, and files with images, tables, and formatting. Batch upload multiple files at once.
Our engine converts your EPUB to FB2 while preserving text formatting, paragraph styles, images, tables, headers, footers, and page layout as faithfully as possible.
Download your converted FB2 document instantly. For batch conversions, download all files individually or as a single ZIP archive. No watermarks or quality loss.
Why Convert EPUB to FB2
FB2 uses XML to describe book structure — title, author, genre, annotation, chapters — making it ideal for cataloging and library management.
FB2 is the dominant ebook format in Russia, Ukraine, and across Eastern Europe. Converting to FB2 makes your books accessible to millions of readers.
FB2 was designed with Cyrillic text in mind. Unicode encoding ensures perfect rendering of Russian, Ukrainian, Bulgarian, and other scripts.
FB2 stores detailed metadata — author info, genre classification, series info, cover image — making organization and discovery easy.
FB2's XML structure is clean and compact. Files are small, load quickly, and work well on low-powered devices and older eReaders.
FB2 is supported by FBReader, CoolReader, Moon+ Reader, and many popular reading apps — especially on Android.
EPUB vs FB2: Side-by-side
Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.
| Property | EPUB | FB2 |
|---|---|---|
| Full name | Electronic Publication | FictionBook 2 |
| Year introduced | 2007 | 2004 |
| Developer / standard body | W3C (formerly IDPF) | FictionBook (open) |
| MIME type | application/epub+zip | application/x-fictionbook+xml |
| File extension | .epub | .fb2 |
| Compression | ZIP-compressed XHTML + CSS | XML (typically uncompressed) |
| Color / data depth | N/A | N/A |
| Max dimensions / size | Software-limited | Software-limited |
| Transparency | No | No |
| Animation | No | No |
| Standard / specification | W3C EPUB 3.3 / ISO/IEC 23736 | FictionBook (open) |
| Best for | Apple Books, Kobo, Nook, Google Play Books — reflowable text | Russian-speaking ebook community, lightweight ebook archiving |
About the EPUB Format
EPUB (Electronic Publication) is the most widely adopted open ebook standard, maintained by the W3C (formerly IDPF) and published as ISO/IEC 23736. First released in 2007 as the successor to the Open eBook format, EPUB uses XHTML for content, CSS for styling, and ZIP compression for packaging. Its defining feature is reflowable text — content automatically adapts to fit any screen size, allowing readers to adjust font size, margins, and line spacing on phones, tablets, and dedicated eReaders.
EPUB is natively supported by Apple Books, Kobo, Nook, Google Play Books, and nearly every eReader and reading app outside the Kindle ecosystem. EPUB 3, the current version, adds support for embedded fonts, SVG graphics, MathML equations, JavaScript interactivity, audio/video embedding, and comprehensive accessibility features including text-to-speech and screen reader support. While Kindle devices do not read EPUB natively, the format can be converted to MOBI or AZW3 for Kindle compatibility.
EPUB to FB2 FAQ
Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert EPUB files to FB2.
How do I convert EPUB to FB2?
What is FB2 format?
Why convert EPUB to FB2?
Will text and chapters be preserved?
Is EPUB to FB2 conversion free?
Document Conversion Guides for Convert EPUB to FB2 Free Online — FictionBook Format
Read guides about PDF, Word, and editable document workflows connected to Convert EPUB to FB2 Free Online — FictionBook Format.
DOCX to EPUB Conversion: How to Preserve Formatting
Converting Word documents to EPUB often breaks formatting. This guide shows you how to prepare your DOCX file and convert it to EPUB while preserving headings, images, tables, and styles.
How to Convert Your Manuscript to EPUB for Publishing
A self-publishing guide to converting your manuscript into a professional EPUB file. Covers formatting, chapter structure, cover images, metadata, and conversion tools for Amazon KDP, Apple Books, and Kobo.
eBook Formats Explained: EPUB, MOBI, PDF and More
The definitive guide to eBook formats — EPUB, MOBI, AZW3, PDF, FB2, and more. Compare features, device compatibility, and formatting options for readers, authors, and self-publishers.
How to Convert Kindle Books to EPUB (DRM-Free Guide)
A practical guide to converting DRM-free Kindle books (AZW3, MOBI) to EPUB format — so you can read them on Kobo, Apple Books, or any EPUB-compatible device.
How to Convert PDF to EPUB for Kindle, Kobo and Apple Books
Convert PDF to EPUB free for Kindle, Kobo, and Apple Books. Step-by-step guide for readable ebooks with proper reflowable text.
EPUB vs MOBI vs PDF vs AZW3 — eBook Format Comparison Guide
EPUB vs MOBI vs PDF vs AZW3 — which ebook format for Kindle, Kobo, Apple Books, and Google Play? Compatibility and conversion guide.