UFOZoo

EPUB to Markdown — Convert EPUB eBooks to Markdown Online

Convert EPUB eBooks to clean Markdown with chapter navigation, metadata, and selective export. Preview content before converting. Browser-based.

Features

  • ✓Convert EPUB 2 and EPUB 3 eBooks to clean Markdown
  • ✓Preserve headings, paragraphs, lists, tables, and links
  • ✓Extract book metadata (title, author, language, description)
  • ✓Full-text Markdown preview before downloading
  • ✓One-click copy entire book to clipboard
  • ✓Download as .md file with correct filename
  • ✓Support drag and drop file open
  • ✓Handle DRM-protected files with clear error messages
  • ✓All processing runs in your browser — no upload, fully private

How to Use

  1. 1Click the drop area or drag an .epub file into the browser.
  2. 2The tool automatically converts the EPUB to Markdown.
  3. 3Preview the full Markdown output in the text panel.
  4. 4Click 'Copy All' to copy the Markdown to your clipboard.
  5. 5Click 'Save' to save the Markdown as a .md file.
  6. 6Open a different file at any time using the open button in the toolbar.
  7. 7Use this to extract eBook text for note-taking, annotation, or republishing.
  8. 8Convert eBooks to Markdown for importing into static site generators like Hugo, Jekyll, or Obsidian.
  9. 9Extract chapters for blog posts by copying specific sections from the preview.
  10. 10Use the converted Markdown as input for LLMs and text analysis pipelines.

Frequently Asked Questions

What EPUB formats are supported?

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The tool supports both EPUB 2 (with NCX navigation) and EPUB 3 (with nav.xhtml) formats. It reads XHTML content, extracts text with headings, paragraphs, lists, tables, links, and inline formatting.

Can I select specific chapters?

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The current version converts the entire EPUB to Markdown at once. You can copy or save the full output. For chapter-specific extraction, copy the relevant section from the preview.

Does this preserve formatting?

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Yes. Headings (H1-H6), bold, italic, links, ordered and unordered lists, blockquotes, tables with alignment, and fenced code blocks are all converted to their Markdown equivalents.

What about images in the EPUB?

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Images are referenced with Markdown image syntax ![alt](src) using the original relative paths from the EPUB. They are not embedded as base64.

Is my data private?

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Yes. All conversion happens entirely in your browser using @markitdownjs/epub and JSZip. No file is uploaded to any server. You can disconnect from the internet and the tool still works.

What if my EPUB has DRM protection?

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DRM-protected EPUBs cannot be converted. You will see a clear error message indicating the file is protected. Only standard, unprotected EPUB files work.

Can I convert multiple EPUBs at once?

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Currently the tool processes one EPUB at a time. Open a new file to convert another one — the previous result will be replaced.

What is the difference between EPUB and PDF conversion?

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EPUB is a structured XML-based format with semantic markup, so the tool can extract clean headings, lists, and tables. PDF conversion often produces messy text with broken formatting because PDF is a layout format, not a semantic one.

Can I use the Markdown output for LLMs?

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Yes. Markdown is one of the best formats for LLM text analysis pipelines. The clean structure helps models understand document hierarchy, making it ideal for summarization, question answering, and RAG applications.

How accurate is the chapter structure?

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The tool uses the EPUB's NCX or nav.xhtml table of contents for chapter boundaries. If the EPUB has a well-structured TOC, the output will match the original book. EPUBs without proper navigation may produce less structured output.

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