md2pdf

A configurable command-line utility that converts Markdown files to professionally formatted PDFs with customizable styling, headers, footers, and themes.

Features

• Convert Markdown to professionally styled PDFs
• Configurable headers and footers with variable substitution
• Multiple built-in themes (default, minimal, dark, professional)
• Custom CSS support
• Table of Contents generation
• Syntax highlighting for code blocks
• JSON configuration files with schema validation
• Supports all standard Markdown elements

Installation

npm install -g @vimukthid/md2pdf

Or use locally in your project:

npm install @vimukthid/md2pdf

Quick Start

# Convert a Markdown file to PDF
md2pdf document.md

# Specify output file
md2pdf document.md output.pdf

# Use a specific theme
md2pdf document.md --theme dark

# Generate a config file
md2pdf --init

Usage

md2pdf <input.md> [output.pdf] [options]

Arguments:
  input.md              Path to input Markdown file (required)
  output.pdf            Path to output PDF file (optional)

Options:
  -c, --config <path>   Path to configuration file
  -o, --output <path>   Output PDF path
  --init                Generate default config file (md2pdf.config.json)
  --validate            Validate configuration file without converting
  --no-config           Ignore all configuration files, use defaults only
  --theme <name>        Use a built-in theme (default, minimal, dark, professional)
  --css <path>          Path to custom CSS file
  --verbose             Show detailed conversion process
  --quiet               Suppress all output except errors
  -v, --version         Show version number
  -h, --help            Show help message

Configuration

md2pdf supports JSON configuration files. Configuration is loaded from multiple sources in priority order:

1. Command-line specified config (--config path/to/config.json)
2. Project-level config (./md2pdf.config.json)
3. User-level config (~/.md2pdf/config.json)
4. Built-in defaults

Generate Config File

md2pdf --init

This creates md2pdf.config.json with default settings.

Configuration Options

{
  "$schema": "https://vimukthid.dev/md2pdf/schema.json",
  "footer": {
    "enabled": true,
    "left": "© {year} - {website} | {email}",
    "right": "Page {page} / {total}",
    "fontSize": "9px",
    "color": "#666666"
  },
  "header": {
    "enabled": false,
    "left": "",
    "center": "",
    "right": ""
  },
  "page": {
    "format": "A4",
    "margin": {
      "top": "2cm",
      "right": "2cm",
      "bottom": "2.5cm",
      "left": "2cm"
    },
    "printBackground": true
  },
  "style": {
    "fontFamily": "-apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif",
    "fontSize": "16px",
    "lineHeight": "1.6",
    "color": "#333333",
    "h1": {
      "color": "#2c3e50",
      "borderBottom": "3px solid #3498db",
      "fontSize": "32px"
    },
    "h2": {
      "color": "#34495e",
      "borderBottom": "2px solid #95a5a6",
      "fontSize": "24px"
    },
    "code": {
      "backgroundColor": "#f4f4f4",
      "color": "#e74c3c",
      "fontSize": "13px"
    },
    "codeBlock": {
      "backgroundColor": "#f8f8f8",
      "border": "1px solid #ddd",
      "fontSize": "13px"
    },
    "table": {
      "headerBackground": "#3498db",
      "headerColor": "#ffffff",
      "borderColor": "#dddddd"
    }
  },
  "variables": {
    "website": "https://example.com",
    "email": "contact@example.com",
    "author": "Your Name",
    "company": "Company Name",
    "year": "auto"
  },
  "toc": {
    "enabled": false,
    "position": "start",
    "depth": 3,
    "title": "Table of Contents"
  }
}

Variable Substitution

Use these variables in header/footer templates:

Themes

md2pdf includes four built-in themes:

• default - Clean, modern styling
• minimal - Simple, serif-based design
• dark - Dark mode with syntax highlighting colors
• professional - Business document styling

md2pdf document.md --theme professional

Or in config:

{
  "theme": "dark"
}

Custom CSS

Apply custom CSS to your PDFs:

md2pdf document.md --css custom.css

Or in config:

{
  "style": {
    "customCSS": "body { background: #fafafa; }"
  }
}

Available CSS Classes

.md2pdf-body { }
.md2pdf-h1, .md2pdf-h2, .md2pdf-h3, .md2pdf-h4, .md2pdf-h5, .md2pdf-h6 { }
.md2pdf-p { }
.md2pdf-code { }
.md2pdf-code-block { }
.md2pdf-table { }
.md2pdf-blockquote { }
.md2pdf-link { }
.md2pdf-list { }
.md2pdf-image { }
.md2pdf-toc { }

Programmatic API

const { convertMarkdownToPdf, loadConfig, getDefaults } = require('@vimukthid/md2pdf');

// Basic usage
await convertMarkdownToPdf('input.md', 'output.pdf', getDefaults());

// With custom config
const config = await loadConfig('./my-config.json');
await convertMarkdownToPdf('input.md', 'output.pdf', config);

Page Formats

Supported page formats:

• A4 (default)
• Letter
• Legal
• A3
• A5
• Tabloid

Requirements

• Node.js >= 16.0.0
• Chromium (automatically installed with Puppeteer)

Troubleshooting

Puppeteer/Chromium Issues

If you encounter issues with Puppeteer, try:

# Install Chromium manually
npx puppeteer browsers install chrome

Permission Errors

Ensure you have write permissions to the output directory.

Large Files

For large documents, the conversion may take longer. Use --verbose to see progress.

License

MIT © Vimukthi Dissanayake

Contributing

Contributions are welcome! Please read our contributing guidelines before submitting a PR.

Changelog

2.0.1

• Added configuration file support
• Added theme support
• Added custom CSS support
• Added Table of Contents generation
• Added variable substitution in headers/footers
• Improved error handling and validation