MarkPDF

Open-source web app to write markdown, render it safely, and export to PDF in one click.

Features

• Live markdown editor and preview
• Sanitized HTML output (DOMPurify)
• One-click PDF export (html2pdf.js)
• Runs fully in the browser (no backend required)
• Deployable on any static hosting platform

Tech Stack

• React + TypeScript + Vite
• marked for markdown parsing
• dompurify for sanitization
• html2pdf.js for client-side PDF generation

Local Development

npm install
npm run dev

App runs at http://localhost:5173 by default.

Build

npm run build
npm run preview

Deployment

This project outputs static files (dist), so it can be hosted on any static platform.

• Build command: npm run build
• Output directory: dist

Example providers

• Cloudflare Pages
• GitHub Pages
• Netlify
• Vercel

Optional: Cloudflare Pages CLI deploy

npm run build
npm run deploy:pages

Open Source

• License: MIT
• Contributions via pull request are welcome. See CONTRIBUTING.md.

Security Note

This project sanitizes rendered markdown before injecting HTML into the preview. Security headers are defined in public/_headers (supported by Cloudflare Pages; use equivalent headers on other hosts).