Convert Markdown to HTML optimized for Substack's rich text editor.

🚀 Try it online

1. Install dependencies: npm install
2. Start dev server: npm run dev
3. Open the URL shown in terminal (usually http://localhost:5173)
4. Type or paste Markdown in the left panel
5. Copy the formatted output and paste into Substack

Run npm run build to create optimized files in the dist/ folder.