Documents

FB2 → EPUB

Learn about the formats: What is EPUB?

Convert your FB2 e-books to EPUB for wider compatibility across modern e-readers and applications. This conversion is ideal for readers who use devices that natively support the EPUB format.

FB2 (FictionBook 2.0) is an XML-based e-book format popular in Eastern Europe, primarily focused on semantic structure and metadata. EPUB, an open standard, uses XHTML, CSS, and XML for content, offering reflowable text and broad device compatibility. When converting FB2 to EPUB, the content's structural elements (chapters, paragraphs, images, metadata) are re-encoded from FB2's XML tags into EPUB's XHTML and CSS, ensuring the book's readability and formatting are preserved for a wider range of e-readers and software.

The conversion from FB2 to EPUB generally results in excellent quality, as both formats are designed for reflowable text and structured content. Expect faithful preservation of text, images, and chapter structure.

Tips

Ensure your FB2 file is well-structured and valid for optimal EPUB output.
Check the generated EPUB on your target e-reader or application for display consistency.
Verify that embedded images are correctly sized and positioned after conversion.
Review the table of contents in the EPUB to confirm chapter navigation works as expected.

Common use cases

Reading FB2 books on Apple Books, Google Play Books, or Kobo devices, which primarily support EPUB.
Archiving your FB2 collection in a more universally compatible format for future-proofing.
Sharing e-books with friends who use a variety of e-readers that widely support EPUB.
Preparing books for submission to platforms or stores that require the EPUB format.

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Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.

File formats: what to choose

A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.

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Documents

Office files, PDFs, ebooks, and plain text.

Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT

Advantages

+ PDF locks layout for printing and sharing
+ DOCX and ODT are easy to edit collaboratively
+ Plain text works on any device

Disadvantages

− PDF is hard to edit without special tools
− Complex layouts may shift after conversion
− Scanned PDFs need OCR for editable text

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Images

Raster and vector graphics for web, print, and photography.

Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF

Advantages

+ WebP and AVIF offer excellent compression for the web
+ PNG keeps transparency and sharp edges
+ SVG scales without quality loss

Disadvantages

− RAW and TIFF files are large and slow to share
− JPEG loses quality on every re-save
− Some formats are not supported in older browsers

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Video

Clips, streams, screen recordings, and movies.

Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG

Advantages

+ MP4 (H.264/H.265) plays almost everywhere
+ WebM is efficient for web embedding
+ MKV can hold multiple audio and subtitle tracks

Disadvantages

− High-resolution video needs lots of storage and bandwidth
− Re-encoding always takes time and may reduce quality
− Some codecs require licensing for commercial use

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Audio

Music, podcasts, voice recordings, and sound effects.

Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS

Advantages

+ FLAC and WAV preserve full quality for editing
+ MP3 and AAC are universally compatible
+ OPUS delivers great quality at low bitrates

Disadvantages

− Uncompressed WAV files are very large
− Lossy formats cannot be restored to original quality
− DRM-protected files may not convert

Frequently asked questions

Yes, the conversion process is designed to embed the original FB2 cover image into the EPUB file, ensuring it displays correctly on your e-reader.

Yes, semantic elements like footnotes, italics, bold text, and other basic formatting from FB2 are typically mapped to their EPUB equivalents (HTML and CSS) during conversion.

Yes, EPUB files are editable using dedicated EPUB editing software (e.g., Calibre, Sigil), allowing you to fine-tune styling, metadata, or layout if needed.

No, the core text content and structural elements like chapters are highly resilient during FB2 to EPUB conversion due to the underlying structured nature of both formats.

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