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Document Conversion

Convert TXT to EPUB — Free Online Converter

Convert Plain Text (.txt) to Electronic Publication (.epub) online for free. Fast, secure document conversion with no watermarks or registration....

またはインポート元

200万以上のファイル変換

数千人のユーザーに信頼されています

安全な転送

HTTPS暗号化アップロード

プライバシー優先

処理後にファイルを自動削除

登録不要

すぐに変換を開始

どこでも動作

あらゆるブラウザ、あらゆるデバイス

変換方法

1

Upload your .txt file by dragging it into the upload area or clicking to browse.

2

Choose your output settings. The default settings work great for most files.

3

Click Convert and download your .epub file when it's ready.

About TXT to EPUB Conversion

TXT files are the most basic form of digital text — no formatting, no chapters, no metadata, just raw characters. EPUB (Electronic Publication) is the open standard for ebooks, used by Apple Books, Kobo, Google Play Books, and virtually every e-reader except Amazon Kindle. EPUB wraps XHTML content, CSS styles, images, and metadata in a ZIP container, providing reflowable text that adapts to any screen size with bookmarks, annotations, and table of contents navigation.

Converting TXT to EPUB transforms a plain text file — whether it's a novel manuscript, a collection of notes, or any other text content — into a proper ebook that can be read comfortably on e-readers, tablets, and phone reading apps with all the features readers expect.

Why Convert TXT to EPUB?

E-reader devices and apps are specifically designed for long-form reading with features that enhance the experience: adjustable font sizes, night mode, bookmarks, progress tracking, annotations, and synchronized reading position across devices. Opening a TXT file on an e-reader provides a poor experience — no chapters, no table of contents, no metadata, and often incorrect encoding detection.

For authors and self-publishers, converting TXT manuscripts to EPUB is a critical step in the publishing pipeline. EPUB files can be submitted to Apple Books, Kobo, Barnes & Noble, Google Play Books, and other retailers. Even for personal reading, wrapping a TXT file in EPUB format dramatically improves the experience on any reading device or app.

Common Use Cases

  • Convert plain text novel manuscripts into EPUB ebooks for self-publishing on Apple Books and Kobo
  • Transform Project Gutenberg text files into EPUB format for comfortable reading on e-readers
  • Package text-based course materials as EPUB files for student access on tablets and phones
  • Convert personal notes and journal entries from TXT to EPUB for organized reading in ebook apps
  • Create EPUB versions of text-based documentation for offline reading on e-reader devices

How It Works

Pandoc processes the TXT file, detecting character encoding and parsing the text structure. Paragraph breaks (double newlines) are identified and converted to XHTML paragraph elements. If Markdown-like heading patterns are detected (lines starting with # or preceded by === or --- underlines), they are mapped to heading elements for table of contents generation. The content is wrapped in valid EPUB 3 structure: mimetype file, META-INF/container.xml, content.opf (metadata and manifest), nav.xhtml (navigation/TOC), and one or more XHTML content files. Basic CSS is included for readable typography on e-reader devices.

Quality & Performance

All text content from the TXT file is preserved verbatim in the EPUB output. The conversion produces clean, reflowable content that adapts to any screen size and font preference. The main limitation is that plain text provides no structural hints — without explicit chapter markers or heading patterns, the EPUB will be a single continuous flow of text. For the best EPUB output, add chapter headings or blank-line separators in the TXT file before converting, or use Markdown formatting for rich structure.

LIBREOFFICE EngineModerateMinimal Quality Loss

Device Compatibility

DeviceTXTEPUB
Windows PCPartialPartial
macOSPartialPartial
iPhone/iPadPartialPartial
AndroidPartialPartial
LinuxPartialPartial
Web BrowserNoNo

Tips for Best Results

  • 1Use blank lines between paragraphs in your TXT file — they will be recognized as paragraph breaks in the EPUB
  • 2Add chapter headings with # prefix (Markdown-style) in the TXT for automatic chapter detection and TOC generation
  • 3Save the TXT file as UTF-8 to preserve accented characters, em dashes, and special quotation marks in the EPUB
  • 4After conversion, use Calibre to add a cover image, edit metadata, and fine-tune the EPUB for publishing
  • 5For long novels, separate chapters with clear heading lines to produce a well-navigated EPUB with chapter jumps

Related Conversions

TXT-to-EPUB conversion transforms raw text into a proper ebook format with reflowable text, metadata, and e-reader compatibility — essential for authors, readers, and anyone who wants to read long text content comfortably on dedicated reading devices.

よくある質問

If the TXT file contains heading-like patterns (lines prefixed with # or underlined with === or ---), the converter generates chapter breaks and a table of contents. Pure unformatted text produces a single-chapter EPUB.
The automatic conversion does not add a cover image. You can add a cover afterward using free tools like Calibre or Sigil, which provide full EPUB editing capabilities.
Kindle natively supports MOBI and AZW3 formats. However, recent Kindle devices and the Send to Kindle service now accept EPUB files. For older Kindles, convert the EPUB to MOBI using our EPUB-to-MOBI converter.
The converter sets default metadata (title from filename, language as English). You can edit metadata (title, author, description, language, ISBN) afterward using Calibre or Sigil.
The EPUB includes basic CSS for readable typography. E-reader apps allow users to override fonts, sizes, margins, and line spacing to their preference. The EPUB's CSS serves as a sensible default.

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