DJVU to FB2 Converter

Free DJVU to FB2 converter — structured e-book output

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Structured E-Book

FB2 organizes your DJVU content with chapters, metadata, and annotations — a properly structured book format.

Secure Conversion

All uploaded DJVU files are deleted after conversion completes. FB2 outputs are purged within 24 hours.

No App Required

Convert DJVU to FB2 directly in your web browser. No e-book software or conversion tools need to be installed.

How to convert DJVU to FB2

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose fb2 or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your fb2 file right afterwards

About formats

DjVu (pronounced "deja vu") is a document format developed at AT&T Labs by Yann LeCun, Leon Bottou, Patrick Haffner, and Paul Howard, first released in 1996. The format was specifically designed for storing scanned documents and images at very high compression ratios while maintaining visual quality suitable for on-screen reading. DjVu achieves this through a layered approach: the document image is separated into a foreground layer (text and line art at full resolution), a background layer (photographs and textures at reduced resolution), and a mask layer that determines which layer is visible at each pixel. This separation, combined with purpose-built compression algorithms for each layer type, typically produces files 5-10 times smaller than equivalent JPEG or PDF scans. One advantage is exceptional compression on scanned pages — a 300 DPI color scan that might occupy 25 MB as TIFF or 500 KB as JPEG typically compresses to 40-80 KB in DjVu while preserving legible text. The progressive rendering model is another strength: DjVu files stream efficiently over networks, displaying a readable low-resolution version almost immediately while progressively refining to full quality. The format supports multi-page documents, embedded text layers for searchability, hyperlinks, annotations, and a shared dictionary mechanism that further compresses collections of similar pages. DjVu is widely used by libraries and archives for digitized historical documents and manuscripts.
Developer: AT&T Labs
Initial release: 1996
FB2 (FictionBook) is an XML-based ebook format created by Dmitry Gribov in 2004, designed to provide a clean semantic description of a book's content independent of its visual presentation. Unlike page-layout formats, FB2 encodes structure — title, authors, chapters, annotations, genres, epigraphs, poems, footnotes, and binary attachments (typically cover images) — within a single well-formed XML document. This structural approach means reading applications have full control over rendering, allowing the same file to adapt perfectly to a small phone screen or a large e-ink reader. FB2 became enormously popular in Russia and Eastern Europe, serving as the dominant format on major Russian digital libraries and ebook distribution platforms. One significant advantage is metadata richness: the format's schema mandates detailed bibliographic information including author, translator, series position, publication date, and genre classification, making library management and discovery straightforward. The plain-text XML foundation is another strength — FB2 files are human-readable, easy to validate, and simple to transform using standard XML tools like XSLT. The format specification is freely available on GitHub, and a wide ecosystem of readers, editors, and converters supports it across all major platforms, from desktop applications like Calibre to dedicated e-readers with native FB2 rendering.
Developer: Dmitry Gribov
Initial release: 2004

Frequently Asked Questions

What is FB2 format?

FB2 (FictionBook) is an XML-based e-book format popular in Russia and Eastern Europe for structured book storage.

What apps read FB2 files?

FBReader, CoolReader, Moon+ Reader, and Calibre all handle FB2 files. Most are free and cross-platform.

Why convert DJVU to FB2?

FB2 offers rich metadata and structured content — it is widely supported by e-reader apps in many countries.

Is the conversion free?

Yes — DJVU to FB2 is free to use. Premium plans offer batch processing and higher file size allowances.

Does FB2 support images from DJVU?

FB2 can embed images inline with text content, so visual elements from your DJVU may carry over.

Can I edit FB2 files after conversion?

Yes — FB2 is XML-based and can be edited in dedicated FB2 editors or any standard XML editor tool.

DJVU to FB2 Quality Rating

4.3 (7,512 votes)
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