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Extract the full text content from FictionBook (FB2) ebooks into a plain text file. Powered by Calibre for accurate text extraction from the XML-based ebook format popular in Eastern Europe.
By ChangeThisFile Team · Last updated: March 2026
ChangeThisFile extracts the full text content from your FictionBook (FB2) ebook into a plain .txt file using Calibre on our secure servers. FB2 is an XML-based ebook format widely used in Russia and Eastern Europe. Converting to plain text gives you universally readable content in any text editor. Encrypted transfer with automatic file deletion after processing, completely free with no signup required.
FictionBook vs Plain Text: Format Comparison
Key differences between the two formats
| Feature | FB2 | TXT |
|---|---|---|
| Format | FictionBook 2.0 (XML-based) | Plain Text |
| Content type | Structured ebook with semantic markup | Unformatted plain text |
| Structure | XML tags for body, sections, titles, epigraphs, poems | Flat text with line breaks |
| Metadata | Rich: author, genre, series, annotation, publisher | No metadata support |
| Images | Base64-encoded inline images | No image support |
| File size | Small to moderate (XML text + encoded images) | Very small (text only) |
| Compatibility | FBReader, CoolReader, Calibre | Opens on every device and OS |
When to Convert
Common scenarios where this conversion is useful
Read on any device
Convert FB2 ebooks to plain text when your device or reading app does not support the FictionBook format.
Text processing and translation
Extract text from Russian or Eastern European FB2 ebooks for machine translation, language learning, or text analysis.
Content migration
Extract text from FB2 files as a first step in reformatting content for other ebook platforms or publishing workflows.
Archival and backup
Create a plain text backup of FB2 ebook content in a format that will remain readable indefinitely, independent of any particular software.
Who Uses This Conversion
Tailored guidance for different workflows
Office Workers
- Convert FictionBook documents to Plain Text for sharing with colleagues who use different software
- Transform FictionBook reports to Plain Text for archiving or distribution to external stakeholders
Students
- Convert FictionBook lecture notes to Plain Text for submitting assignments in the required format
- Transform FictionBook study materials to Plain Text for reading on tablets or e-readers
Professionals
- Convert FictionBook contracts or proposals to Plain Text for secure, read-only distribution to clients
- Transform FictionBook templates to Plain Text for use across different office suites and platforms
How to Convert FictionBook to Plain Text
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1
Upload your FB2 file
Drag and drop your .fb2 file onto the converter, or click to browse. Files up to 50 MB are supported for free.
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2
Server-side conversion via Calibre
Your file is securely uploaded and converted on our servers using Calibre. Calibre parses the FB2 XML structure, extracting text from body sections, titles, and epigraphs while stripping XML tags and base64-encoded images.
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3
Download the result
Once conversion is complete, click Download to save your .txt file. The uploaded file is automatically deleted from our servers.
Developers: convert via API →
Frequently Asked Questions
Yes, completely free. Convert FB2 to plain text with no cost, no signup, and no watermarks.
No. Files are automatically deleted immediately after conversion. Nothing is stored or retained.
Yes. Files are transferred over encrypted HTTPS connections. Your data is protected in transit.
FictionBook (FB2) is an XML-based ebook format designed for fiction. It uses semantic tags for structure (chapters, sections, epigraphs, poems) and stores images as base64-encoded data within the XML. It is particularly popular in Russia and Eastern European countries.
The conversion uses Calibre, the leading open-source ebook management tool. Calibre fully supports FB2's XML structure and can reliably extract all text content including nested sections and special elements.
Yes. FB2's special structural elements like poems, epigraphs, and citations are extracted as text. Line breaks within poems are preserved in the plain text output.
The output uses UTF-8 encoding, which fully supports Cyrillic, Latin, and all Unicode characters. Russian, Ukrainian, Bulgarian, and other language content is preserved accurately.
Images (stored as base64 in FB2) are removed. The annotation (book description) text is included, but binary image data is stripped.
Yes. Calibre converts FB2's section/title hierarchy into plain text with clear chapter separators, maintaining the book's organizational structure.
Not directly with ChangeThisFile, but you can convert TXT to EPUB or MOBI. For FB2 specifically, you would need to use Calibre desktop or an FB2 editor to recreate the XML structure.
Currently, files are converted one at a time. Upload your next file after downloading the result.
Files up to 50 MB are supported for free conversion.
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Need to convert programmatically?
Use the ChangeThisFile API to convert FictionBook to Plain Text in your app or script. Free tier included.
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