Add PDF export, dark mode, download MD, and stats display features

README.md

@@ -1,24 +1,93 @@
 # Markdown Live Preview
 
-[Markdown Live Preview](https://markdownlivepreview.com/) is a tiny web tool to preview Markdown formatted text.
+[Markdown Live Preview](https://markdownlivepreview.com/) is a feature-rich web tool to preview and edit Markdown formatted text in real-time.
 
-## Setup
+## ✨ Features
 
-```
+### Core Functionality
+- **Live Preview**: Real-time markdown rendering as you type
+- **Split View**: Side-by-side editor and preview with resizable divider
+- **Sync Scroll**: Synchronized scrolling between editor and preview
+
+### Export & Import
+- **📄 Download as Markdown**: Save your work as .md file
+- **📑 Export to PDF**: Convert preview to PDF with preserved formatting
+- **📂 Import Files**: Load .md, .markdown, or .txt files
+- **📋 Copy to Clipboard**: Quick copy of markdown content
+
+### Editor Features
+- **Monaco Editor**: Powerful code editor with syntax highlighting
+- **Word/Character Count**: Real-time statistics display
+- **Auto-save**: Content automatically saved to local storage
+- **Dark Mode**: Toggle between light and dark themes
+
+### Keyboard Shortcuts
+- `Ctrl/Cmd + S` - Download as Markdown
+- `Ctrl/Cmd + P` - Export to PDF
+- `Ctrl/Cmd + O` - Import file
+- `Ctrl/Cmd + H` - Show/Hide help
+- `Ctrl/Cmd + D` - Toggle dark mode
+- `Ctrl/Cmd + K` - Reset content
+
+### User Interface
+- **Help Modal**: Built-in markdown syntax reference
+- **Responsive Design**: Works on desktop and mobile devices
+- **Print-Friendly**: Optimized for printing
+
+## 🚀 Setup
+
+```bash
 $ make setup
 ```
 
-## Build
+Or using npm:
 
+```bash
+$ npm install
 ```
+
+## 🔨 Build
+
+```bash
 $ make build
 ```
 
-## Local Development
+Or using npm:
 
+```bash
+$ npm run build
 ```
+
+## 💻 Local Development
+
+```bash
 $ make dev
 ```
 
-## License
+Or using npm:
+
+```bash
+$ npm run dev
+```
+
+This will start a local development server at `http://localhost:5173/`
+
+## 📦 Dependencies
+
+- **marked** - Markdown parser
+- **monaco-editor** - Code editor
+- **dompurify** - HTML sanitizer
+- **html2pdf.js** - PDF export functionality
+- **github-markdown-css** - GitHub-style markdown rendering
+- **storehouse-js** - Local storage management
+
+## 🤝 Contributing
+
+Contributions are welcome! Please feel free to submit a Pull Request.
+
+## 📄 License
 See the [LICENSE](https://github.com/tanabe/markdown-live-preview/blob/master/LICENSE) file in this repo.
+
+## 🙏 Acknowledgments
+
+Built with ❤️ using open source tools and libraries.