Down_Render

A simple and secure Node.js utility that converts Markdown to HTML with built-in XSS protection.

Features

• Converts Markdown to clean, sanitized HTML
• Built-in XSS protection using sanitize-html
• Supports common Markdown elements:
  • Headings (h1-h6)
  • Bold and italic text
  • Links
  • Ordered and unordered lists
  • Code blocks
  • Blockquotes
  • Tables
  • Images
• Comprehensive test suite
• Input validation

Installation

npm install down_render

Usage

As a Module

const convertMarkdown = require('down_render');

// Convert Markdown to HTML
const markdown = '# Hello World\n\nThis is a **bold** text.';
const html = convertMarkdown(markdown);
console.log(html);

Command Line Interface

mdtohtml input.md > output.html

Security

This converter includes built-in XSS protection through sanitize-html. It only allows specific HTML tags and attributes:

Allowed HTML Tags

• Headings (h1-h6)
• Blockquotes
• Paragraphs
• Links
• Lists (ordered and unordered)
• List items
• Bold and italic text
• Code blocks
• Tables and related elements
• Images

Allowed Attributes

• Links: href, name, target
• Images: src, alt

Development

Running Tests

npm test

The test suite covers:

• Headings conversion
• Bold and italic text
• Links
• Lists (ordered and unordered)
• Code blocks
• Blockquotes
• Input validation

License

ISC

Contributing

1. Fork the repository Github Repo
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

Author

Ikegah Oliver A.