
Markdown to EPUB
β 133by smerchek Β· part of smerchek/claude-epub-skill
A Claude agent skill that converts markdown documents and chat summaries into professional EPUB ebook files. Perfect for creating portable, device-agnostic ebooks from research documents, blog posts, articles, or conversation summaries.
A Claude agent skill that converts markdown documents and chat summaries into professional EPUB ebook files. Perfect for creating portable, device-agnostic ebooks from research documents, blog posts, articles, or conversation summaries.
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This is the exact playbook injected into your agent when the skill activates β shown here so you can audit it before installing. You don't need to read it to use the skill.
by smerchek
A Claude agent skill that converts markdown documents and chat summaries into professional EPUB ebook files. Perfect for creating portable, device-agnostic ebooks from research documents, blog posts, articles, or conversation summaries.
npx skills add https://github.com/smerchek/claude-epub-skill --skill markdown-to-epub-converter
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Markdown to EPUB Converter Skill
This skill transforms markdown documents into professional EPUB ebook files. Perfect for converting research documents, blog posts, articles, or chat conversation summaries into portable, device-agnostic ebook formats.
Overview
The skill accepts markdown content in multiple formats and generates a properly formatted EPUB3 file that works across all major ebook readers including:
-
Apple Books
-
Amazon Kindle (via Kindle for Mac/Windows/iOS/Android)
-
Google Play Books
-
Kobo and other EPUB readers
-
Any standard EPUB reader
Input Formats
Option 1: Raw Markdown Text
Provide markdown content directly in your message:
Convert this markdown to EPUB:
# My Book Title
## Chapter 1
This is chapter one content...
Option 2: File Path
Provide a path to a markdown file to be converted.
How It Works
Markdown Parsing: Analyzes your markdown and automatically:
-
Treats H1 headers (
#) as chapter boundaries -
Treats H2 headers (
##) as section headings within chapters -
Preserves formatting (bold, italic, links, lists, code blocks)
Structure Generation: Creates proper EPUB structure:
-
Automatic table of contents from chapters
-
Navigation document (EPUB3 standard)
-
Metadata (title, language, etc.)
File Creation: Generates a valid EPUB3 file ready for download and use
How to Build a Simple Web Server
Introduction
...content..."
Example 2: Convert a Research Summary
"I have research notes in markdown format. Convert them to an EPUB ebook. The content is:
Research Project: Machine Learning Basics
Chapter 1: Fundamentals
..."
Example 3: Convert a Chat Summary
"Summarize our conversation so far as markdown and convert it to an EPUB for reference"
Output
The skill generates a downloadable EPUB file that includes:
-
Professional formatting
-
Automatic table of contents
-
Proper chapter structure
-
Support for markdown formatting elements:
-
Headers (all levels)
-
Bold and italic text
-
Hyperlinks
-
Lists (ordered and unordered)
-
Code blocks and inline code
-
Blockquotes
-
Horizontal rules
Markdown Elements Supported
Element Markdown Support Notes
Headers # H1 through ###### H6 Full Auto TOC generation
Bold **text** or __text__ Full
Italic *text* or _text_ Full
Links [text](url) Full Clickable in ebooks
Lists - item or 1. item Full Nested lists supported
Code blocks ````language**Enhanced** Syntax highlighting ready, monospace fonts Inline code code **Enhanced** Styled background, borders Tables Markdown tables **Enhanced** Styled headers, alternating rows Blockquotes> quoteFull Styled with left border Horizontal rule---or***` Full
Advanced Features
Enhanced Code Block Support
Code blocks are beautifully formatted with:
-
Premium monospace fonts: SF Mono, Monaco, Fira Code, Consolas, and more
-
Styled backgrounds: Subtle gray background with blue accent border
-
Language detection: Specify language after ````` for future syntax highlighting
-
Proper escaping: HTML characters are safely escaped
-
Overflow handling: Horizontal scrolling for long lines
Example:
def fibonacci(n):
if n Tables are rendered with professional styling:
- **Styled headers**: Blue background with white text
- **Alternating rows**: Zebra striping for readability
- **Cell padding**: Comfortable spacing for easy reading
- **Inline formatting**: Code, bold, italic, and links work in cells
- **Responsive**: Tables adapt to different screen sizes
Example:
Feature Status Notes
Headers β Full support
Code β Enhanced styling
Tables β Professional layout
### Custom Title and Metadata
You can specify EPUB metadata:
- Book title (defaults to first H1 header)
- Author name
- Language
- Publication date
### Chapter Organization
Chapters are automatically detected from:
- H1 headers (`#`) as primary chapter breaks
- Logical content sections between H1s
- Automatic page breaks between chapters
### Styling
The generated EPUB uses clean, readable default styling that:
- Respects the reader's font preferences
- Works on all screen sizes
- Maintains proper spacing and hierarchy
- Includes appropriate margins and padding
## Technical Details
- **Format**: EPUB3 (compatible with all modern readers)
- **Encoding**: UTF-8
- **HTML Version**: XHTML 1.1
- **CSS Support**: Responsive styling
## Downloading Your EPUB
After generation, the file will be available for download. You can then:
- Download the EPUB to your computer
- Open it with your preferred ebook reader
- Transfer to your Kindle, iPad, or other device
- Upload directly to Kindle via email or cloud
## Tips for Best Results
-
**Use Proper Markdown Structure**: The skill works best when markdown follows standard conventions (H1 for titles, H2 for sections)
-
**Clear Chapter Breaks**: Use H1 headers to clearly mark chapter divisions
-
**Descriptive Headers**: Headers become the table of contents, so make them clear and descriptive
-
**Content Organization**: Place content logically between headers
-
**Supported Formatting**: Stick to basic markdown formatting for best compatibility across all readers
## Scripts
- `epub_generator.py` - Core EPUB file creation and formatting
- `markdown_processor.py` - Markdown parsing and structure extraction
## Future Enhancements
- Auto-generated cover pages with custom images
- Kindle-specific optimizations (.mobi format)
- Custom CSS styling per user preferences
- Multi-document merging
- Image embedding and optimization
- Advanced metadata support
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officialnpx skills add https://github.com/smerchek/claude-epub-skill --skill Markdown to EPUBRun this in your project β your agent picks the skill up automatically.
Usage Examples
Example 1: Convert a Blog Post
"Convert this markdown blog post to EPUB:
Troubleshooting
EPUB doesn't open: Ensure your markdown is properly formatted. Check for matching brackets in links and proper syntax.
Table of contents is empty: Make sure your markdown includes H1 headers to define chapters.
Formatting looks different: EPUB readers apply their own fonts and styling. This is normal and expected behavior.