EPUB to FictionBook

EPUB to FB2 Converter

Convert EPUB ebooks into FictionBook 2.0 XML, preview ebook metadata, validate the output, and download a genuine FB2 file.

Upload EPUB Convert Online Download FB2

Create FictionBook XML

Generate an FB2 ebook for compatible readers, archives, XML workflows, and ebook libraries.

Professional EPUB to FB2 Converter

Upload a genuine EPUB ebook and convert it into validated FictionBook 2.0 XML using the Zamzar API.

Add your Zamzar API key near the top of this PHP file before converting.

Upload EPUB

The EPUB is sent temporarily to Zamzar for conversion. Local files are automatically removed after 24 hours.

FB2 Output

Ready to Convert

Upload an EPUB file and click convert to create FictionBook XML.

Enabled PHP cURL

Enabled EPUB Validation

0 EPUB Sections

0 KB FB2 Size

This version uses the Zamzar API because CloudConvert does not currently list FB2 as an EPUB output format. No PHP exec(), Calibre, Composer, FFmpeg, Imagick, or database is required.

Why Convert EPUB to FB2?

Convert a packaged EPUB ebook into an XML-based FictionBook document for compatible readers and structured ebook workflows.

Secure EPUB Validation

The tool verifies the EPUB mimetype, container file, and package structure before uploading it for conversion.

Validated FB2 XML

The converted file is parsed locally and accepted only when its root element is FictionBook.

Direct FB2 Download

Preview the beginning of the XML output and download the complete FictionBook file.

What Is EPUB to FB2 Conversion?

EPUB is an open packaged ebook standard that uses HTML, CSS, XML, metadata, and compressed resources. FB2 is an XML-based ebook format that stores book structure, metadata, text, notes, and embedded images in a FictionBook document.

Converting EPUB to FB2 rebuilds chapters and metadata into FictionBook XML. Complex EPUB styling, scripts, multimedia, fixed layouts, and interactive content may be simplified because FB2 focuses primarily on semantic book structure.

How It Works

Convert EPUB to FB2 in three professional steps.

1. Upload EPUB

Select a genuine, DRM-free EPUB ebook or drag and drop it into the upload area.

2. Convert Through Zamzar

The tool creates an API conversion job, checks its progress, and downloads the generated FB2 file.

3. Validate and Download

The output XML is validated as FictionBook before the preview and download button appear.

EPUB to FB2 Converter FAQs

Answers about FictionBook XML, EPUB validation, DRM, API requirements, and formatting.

It converts an EPUB electronic publication into an FB2 FictionBook 2.0 XML ebook.

Yes. With a valid Zamzar API key, the tool downloads the converted file and validates that its XML root element is FictionBook.

No. DRM-protected ebooks normally cannot be converted. Use only DRM-free ebooks that you own or are legally allowed to process.

Text, chapters, images, notes, and metadata are generally transferred, but advanced CSS, embedded fonts, scripts, multimedia, and fixed layouts may be simplified.

No. This shared-hosting version uses the Zamzar API and does not need PHP exec(), Calibre, or ebook-convert.

Yes. Add your Zamzar developer API key near the top of the PHP file or define the ZAMZAR_API_KEY environment variable.

Uploaded and converted files are automatically removed locally after 24 hours.