Release v1.5.0: Enhanced Features and Open Source Compatibility

Major improvements including optional advanced export options, removed proprietary dependencies for better open-source compatibility, and comprehensive new features for enhanced user experience.

🔧 Export Functions & Advanced Options:
• Fixed export function issues after advanced options integration
• Added optional advanced export checkbox (unchecked by default)
• Clean UI separation between simple and advanced export workflows

🏗️ Open Source Compatibility:
• Removed bundled Pandoc binaries - requires system installation
• Replaced proprietary XLSX with open-source CSV export
• Eliminated licensing concerns with bundled dependencies

✨ Advanced User Experience Features:
• Auto-save system with visual indicators every 30 seconds
• Enhanced document statistics (lines, paragraphs, sentences, reading time)
• Recent files menu with persistent storage (last 10 files)
• Mathematical expression support with KaTeX rendering
• Improved export dialog with better user experience

📚 Updated documentation with new dependency requirements and features

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

CLAUDE.md

@@ -1,189 +1,422 @@
-# Pan Converter
+# PanConverter - Claude Development Guide
 
-## Overview
-Pan Converter is a cross-platform desktop application for editing and converting Markdown files using Pandoc. It features a rich markdown editor with live preview, multiple themes, and support for exporting to various formats.
+## Project Overview
 
-## Features
-- **Markdown Editor**: Full-featured editor with syntax highlighting
-- **Live Preview**: Real-time preview of your markdown content
-- **Multiple Themes**: Light, Dark, Solarized, Monokai, and GitHub themes
-- **Format Conversion**: Export to HTML, PDF, DOCX, LaTeX, RTF, ODT, and EPUB using Pandoc
-- **Cross-Platform**: Runs on Windows, macOS, and Linux
-- **Auto-Save**: Automatic saving every 30 seconds
+**PanConverter** is a cross-platform Markdown editor and converter powered by Pandoc, built with Electron. It provides professional-grade editing capabilities with comprehensive export options.
 
-## Requirements
-- **Pandoc**: Must be installed on the system for export functionality
-  - Ubuntu/Debian: `sudo apt-get install pandoc`
-  - macOS: `brew install pandoc`
-  - Windows: Download from https://pandoc.org/installing.html
+**Current Version**: v1.5.0
+**Author**: Amit Haridas (amit.wh@gmail.com)
+**License**: MIT
+**Repository**: https://github.com/amitwh/pan-converter
 
-## Development Setup
+## Architecture & Technology Stack
+
+### Core Technologies
+- **Electron** - Cross-platform desktop application framework
+- **Pandoc** - Universal document converter (required system dependency)
+- **marked** - Markdown parsing and rendering
+- **highlight.js** - Syntax highlighting
+- **KaTeX** - Mathematical expression rendering
+- **DOMPurify** - HTML sanitization
+
+### Application Structure
+```
+src/
+├── main.js        # Electron main process, menu system, IPC handlers
+├── renderer.js    # TabManager class, multi-file editing, event handling
+├── index.html     # Application layout with tabbed interface
+└── styles.css     # Comprehensive styling with multi-theme support
+
+assets/
+└── icon.png       # Application icon
+
+package.json       # Dependencies and build configuration
+CLAUDE.md          # Development documentation for AI assistants
+```
+
+## Development Commands
 
 ### Prerequisites
-- Node.js (v14 or higher)
-- npm or yarn
-- Pandoc (for export features)
-
-### Installation
 ```bash
-# Clone the repository
-git clone <repository-url>
-cd pan-converter
-
-# Install dependencies
+# Install Node.js dependencies
 npm install
 
-# Generate icons
+# Install Pandoc (required for export functionality)
+# Ubuntu/Debian:
+sudo apt-get install pandoc
+
+# macOS:
+brew install pandoc
+
+# Windows: Download from https://pandoc.org/installing.html
+```
+
+### Running the Application
+```bash
+# Start development server
+npm start
+
+# Start with debugging
+npm start --enable-logging
+```
+
+### Building & Packaging
+
+```bash
+# Generate application icons
 npm run generate-icons
 
-# Start the application
-npm start
-```
-
-## Building
-
-### Build for Current Platform
-```bash
+# Build for current platform
 npm run build
-```
 
-### Build for Specific Platforms
-```bash
-# Windows
-npm run build:win
+# Platform-specific builds
+npm run build:win      # Windows
+npm run build:mac      # macOS
+npm run build:linux    # Linux (AppImage, .deb, .snap)
 
-# macOS
-npm run build:mac
-
-# Linux (generates .deb, .AppImage, and .snap)
-npm run build:linux
-```
-
-### Build for All Platforms
-```bash
+# Build for all platforms
 npm run dist:all
 ```
 
-## Project Structure
-```
-pan-converter/
-├── src/
-│   ├── main.js         # Main process
-│   ├── renderer.js     # Renderer process
-│   ├── index.html      # Main window HTML
-│   └── styles.css      # Application styles
-├── assets/
-│   ├── icon.svg        # Source icon
-│   └── icon.png        # Generated icons
-├── scripts/
-│   └── generate-icons.js # Icon generation script
-├── package.json        # Project configuration
-└── CLAUDE.md          # This file
+### Git Branch Management
+```bash
+# Switch to platform-specific branches
+git checkout linux    # Linux development
+git checkout macos     # macOS development  
+git checkout windows   # Windows development
+git checkout master    # Main development branch
+
+# Update all branches with latest changes
+git checkout master
+git push origin master
+git checkout linux && git merge master && git push origin linux
+git checkout macos && git merge master && git push origin macos
+git checkout windows && git merge master && git push origin windows
 ```
 
-## Architecture
+### Release Management
+```bash
+# Create and push release tag
+git tag v1.2.1 -m "Release message"
+git push origin v1.2.1
+
+# Create GitHub release with packages
+gh release create v1.2.1 --title "Title" --notes "Release notes" \
+  "dist/PanConverter-1.2.1.AppImage" \
+  "dist/pan-converter_1.2.1_amd64.deb" \
+  "dist/pan-converter_1.2.1_amd64.snap"
+```
+
+## Feature Implementation Guide
+
+### v1.5.0 Enhanced Features & Open Source Compatibility (Latest)
+
+#### 🔧 Export Function Fixes & Optional Advanced Options
+**Export Dialog Enhancement** (`src/index.html:125-133`, `src/renderer.js:960-985`)
+- Fixed export function issues after advanced export options integration
+- Added optional advanced export options via checkbox toggle (unchecked by default)
+- Basic export options always visible, advanced options hidden until enabled
+- Clean UI separation between simple and advanced export workflows
+
+#### 🏗️ Open Source Compatibility & Dependency Removal
+**Removed Proprietary Dependencies** (`src/main.js:430-450`, `package.json:32-37`)
+- Removed bundled Pandoc binaries - now requires system-installed Pandoc
+- Replaced proprietary XLSX dependency with open-source CSV export
+- Removed non-essential bundled binaries to ensure open-source compatibility
+- Updated export functions to use system Pandoc installation
+
+#### ✨ Advanced User Experience Features
+**Auto-Save System** (`src/renderer.js:445-484`)
+- Automatic saving every 30 seconds with visual indicators
+- Smooth slide-in animation for auto-save notifications
+- Prevents data loss during extended editing sessions
+- Integrated with file opening and tab creation workflows
+
+**Enhanced Document Statistics** (`src/renderer.js:385-444`)
+- Comprehensive statistics: words, characters, lines, paragraphs, sentences
+- Estimated reading time calculation (200 words per minute)
+- Real-time updates as user types
+- Professional presentation in status bar
+
+**Recent Files Management** (`src/main.js:69-114`, `src/renderer.js:487-512`)
+- Recent files menu with last 10 opened files
+- Persistent storage via localStorage and user data directory
+- Menu integration with File > Recent Files submenu
+- Clear recent files functionality with menu rebuild
+
+**Mathematical Expression Support** (`src/renderer.js:1099-1130`, `src/renderer.js:292-306`)
+- KaTeX integration for rendering mathematical expressions
+- Support for multiple delimiters: $$, $, \\[\\], \\(\\)
+- Real-time math rendering in preview pane
+- Fallback handling for missing KaTeX library
+
+### v1.4.0 Advanced Export & Batch Processing
+
+#### 🔧 Fixed File Association Support
+**File Loading Fix** (`src/main.js:385-390`, `src/renderer.js:485-486`)
+- Fixed timing issue with file association loading
+- Added proper `renderer-ready` event to ensure TabManager is initialized
+- Files now open correctly when double-clicked or opened via right-click menu
+- Command-line file arguments are properly handled on startup
+
+#### 🎛️ Advanced Export Options Dialog
+**Template & Metadata Support** (`src/main.js:247-357`, `src/index.html:117-212`)
+- Comprehensive export options dialog with professional UI
+- Template selection (default or custom template files)
+- Metadata fields (title, author, date, subject) with dynamic field addition
+- Document options: Table of Contents, section numbering, citations
+- PDF-specific options: Engine selection (XeLaTeX, PDFLaTeX, LuaLaTeX), custom margins
+- Bibliography support: .bib, .yaml, .json files with CSL styling
+- All export formats now use enhanced options dialog
+
+#### 📁 Batch File Conversion System
+**Multi-File Processing** (`src/main.js:179-186`, `src/main.js:559-690`)
+- New "Batch" menu for converting entire folders
+- Recursive folder processing with progress tracking
+- Support for all export formats with advanced options
+- Real-time progress bar and file-by-file status updates
+- Maintains folder structure in output directory
+- Error handling with completion statistics
+
+#### 🎨 Enhanced UI Components
+**Dialog System** (`src/styles.css:838-1361`)
+- Professional modal dialogs with backdrop and animations
+- Theme-aware styling for all new components
+- Responsive layouts with proper accessibility
+- Form validation and user feedback systems
+- Progress indicators for long-running operations
+
+### v1.3.x Tabbed Interface & Enhanced Features
+
+#### 🗂️ Tabbed Multi-File Support (v1.3.0)
+**TabManager Class** (`src/renderer.js`)
+- Complete tab management system for multiple files
+- Tab switching, creation, and closure
+- State preservation per tab (content, cursor position, scroll)
+- File path tracking for each tab
+- Keyboard shortcuts: `Ctrl/Cmd+T` (new tab), `Ctrl/Cmd+W` (close tab)
+
+#### 🎯 Enhanced PDF Export (v1.3.0)
+**Multi-Engine Fallback System** (`src/main.js:239-280`)
+- Primary: XeLaTeX with proper margins
+- Fallback 1: PDFLaTeX
+- Fallback 2: wkhtmltopdf
+- Automatic engine detection and switching
+
+#### 📁 File Association Support (v1.3.1)
+**OS Integration** (`src/main.js:452-498`, `package.json:50-65`)
+- Double-click .md files to open in PanConverter
+- Command-line argument handling
+- Pending file queue for startup loading
+
+#### 🎨 Typography & Spacing (v1.3.2-1.3.3)
+**Preview Enhancement** (`src/styles.css`)
+- Restored ideal text spacing from v1.0
+- Font sizes increased to 15px for better readability
+- Comprehensive selector coverage for legacy and new containers
+- Theme-aware typography for all content types
+
+### v1.2.1 Comprehensive Editor Enhancements
+
+#### ✨ Advanced Editor Features
+
+**Find & Replace System** (`src/renderer.js:200-350`)
+- Dialog-based interface with match highlighting
+- Forward/backward navigation through matches
+- Replace single or replace all functionality
+- Real-time match counting and status display
+- Escape key closes dialog
+
+**Line Numbers** (`src/renderer.js:450-500`, `src/styles.css:517-598`)
+- Toggle-able line numbers with toolbar button
+- Synchronized scrolling with editor content
+- Theme-aware styling for all supported themes
+- Dynamic line number generation based on content
+
+**Undo/Redo System** (`src/renderer.js:100-150`)
+- Stack-based state management for editor history
+- Keyboard shortcuts: `Ctrl/Cmd+Z` (undo), `Ctrl/Cmd+Shift+Z` (redo)
+- Intelligent state saving on text changes
+- Memory-efficient history management
+
+**Smart Auto-Indentation** (`src/renderer.js:350-400`)
+- Automatic list continuation on Enter key
+- Proper indentation handling for nested lists
+- Support for ordered and unordered lists
+- Intelligent whitespace management
+
+**Enhanced Keyboard Shortcuts** (`src/renderer.js:400-450`)
+- `Tab`/`Shift+Tab` for line indentation/outdentation
+- `Enter` for auto-continuing lists
+- `Ctrl/Cmd+F` for find & replace dialog
+- `Escape` for closing dialogs
+
+**Word/Character Count** (`src/renderer.js:500-530`)
+- Live counting displayed in status bar
+- Updates automatically as content changes
+- Word and character statistics
+
+#### 📤 Export & Conversion Features
+
+**PowerPoint Export** (`src/main.js:330-350`)
+- Convert markdown to PPTX presentations
+- Automatic slide-level formatting (`--slide-level=2`)
+- Smart presentation structure handling
+
+**Spreadsheet Export** (`src/main.js:370-457`)
+- Export markdown tables to Excel (XLSX/XLS) and ODS formats
+- Multi-table support with separate worksheets
+- Automatic table detection and parsing
+- Error handling for files without tables
+
+**Document Import** (`src/main.js:280-315`)
+- Import DOCX, ODT, RTF, HTML, PDF, PPTX, ODP files
+- Automatic conversion to markdown format
+- File dialog with appropriate filters
+- Success notifications and error handling
+
+**Table Creation Helper** (`src/renderer.js:600-650`)
+- Built-in table generator with row/column specification
+- Automatic markdown table formatting
+- Proper header separation and alignment
+
+#### 🎨 Interface & Theming
+
+**Multi-Theme Support** (`src/styles.css:214-598`)
+- Light, Dark, Solarized, Monokai, GitHub themes
+- Complete theming for all UI components
+- Theme-aware styling for new features (find dialog, line numbers)
+- Persistent theme selection with local storage
+
+**Enhanced UI Components** (`src/index.html:94-108`)
+- Find & replace dialog with modern styling
+- Toolbar buttons for all new features
+- Status bar with live statistics
+- Responsive layout with proper spacing
+
+## File Structure & Key Components
 
 ### Main Process (`src/main.js`)
-- Manages application lifecycle
-- Creates and manages windows
-- Handles file operations
-- Manages menu bar
-- Communicates with renderer via IPC
+- **Menu System**: Comprehensive menu with file operations, editing, conversion, view options, batch processing
+- **IPC Handlers**: Communication between main and renderer processes
+- **File Operations**: Open, save, import/export functionality with file association support
+- **Export System**: Advanced export with templates, metadata, and Pandoc integration
+- **Batch Processing**: Multi-file conversion with progress tracking and error handling
+- **Theme Management**: Persistent theme storage and application
+- **Spreadsheet Export**: Table extraction and XLSX generation
+- **About Dialog**: Application information and feature list
 
 ### Renderer Process (`src/renderer.js`)
-- Handles UI interactions
-- Manages editor state
-- Renders markdown preview
-- Handles theme switching
-- Communicates with main process via IPC
+- **Editor Initialization**: CodeMirror-like functionality with custom implementation
+- **TabManager System**: Multi-file editing with state management
+- **Find & Replace Engine**: Search algorithms with regex support
+- **Undo/Redo Manager**: History stack management
+- **Auto-indentation Logic**: Smart list continuation
+- **Live Preview**: Real-time markdown rendering with DOMPurify
+- **Export Dialog Management**: Advanced options collection and validation
+- **Batch Conversion Interface**: Folder selection, progress tracking, and user feedback
+- **Event Handling**: Keyboard shortcuts and UI interactions
+- **Statistics Tracking**: Word/character counting
 
-### Key Libraries
-- **Electron**: Desktop application framework
-- **marked**: Markdown parsing
-- **highlight.js**: Syntax highlighting
-- **DOMPurify**: HTML sanitization
-- **electron-store**: Persistent storage
-- **electron-builder**: Application packaging
+### Styling (`src/styles.css`)
+- **Base Styles**: Application layout and typography
+- **Component Styles**: Toolbar, editor, preview, dialogs
+- **Theme Implementations**: Complete styling for all themes
+- **Responsive Design**: Flexible layouts and proper spacing
+- **Animation Support**: Smooth transitions and hover effects
 
-## Features Implementation
+### HTML Structure (`src/index.html`)
+- **Toolbar**: Feature buttons with SVG icons
+- **Tab Bar**: Multi-file navigation with close buttons
+- **Find Dialog**: Search and replace interface
+- **Export Options Dialog**: Advanced export configuration with templates and metadata
+- **Batch Conversion Dialog**: Folder selection and conversion progress
+- **Editor Container**: Line numbers and text editor with tab content management
+- **Preview Pane**: Rendered markdown display
+- **Status Bar**: Statistics and application status
 
-### Markdown Editor
-- Uses native textarea with custom styling
-- Supports common markdown shortcuts via toolbar
-- Tab key inserts 4 spaces for code indentation
-- Auto-save every 30 seconds when content changes
+## Testing & Quality Assurance
 
-### Live Preview
-- Updates in real-time as you type
-- Sanitized HTML output for security
-- Syntax highlighting for code blocks
-- GitHub-flavored markdown support
+### Manual Testing Checklist
+- [ ] All keyboard shortcuts work correctly
+- [ ] Find & replace functions properly with edge cases
+- [ ] Line numbers sync correctly with content
+- [ ] Undo/redo preserves cursor position
+- [ ] Auto-indentation works with various list types
+- [ ] File association loading (double-click .md files)
+- [ ] Export options dialog with templates and metadata
+- [ ] Batch conversion with progress tracking
+- [ ] All themes render correctly for new components
+- [ ] Export functions work with various document formats
+- [ ] Table creation and export functionality
+- [ ] Cross-platform compatibility
 
-### Theme System
-- Themes stored in user preferences
-- Applied via CSS classes on body element
-- Persists across application restarts
-- Five built-in themes
+### Known Issues & Limitations
+- AppImage may require `--no-sandbox` flag on some Linux systems
+- Large files (>1MB) may cause performance issues
+- Windows/Mac builds require platform-specific environments
+- Pandoc must be installed separately for export functionality
 
-### Export System
-- Uses Pandoc command-line tool
-- Supports multiple output formats
-- Maintains original file structure
-- Shows error messages if Pandoc not installed
+## Deployment & Distribution
 
-## Platform-Specific Branches
+### Release Packages
+- **Linux AppImage**: Universal Linux package (self-contained)
+- **Debian Package**: `.deb` for Ubuntu/Debian systems
+- **Snap Package**: Universal Linux package via Snap Store
+- **Future**: Windows `.exe` and macOS `.dmg` packages
 
-The repository maintains separate branches for platform-specific customizations:
-- `master`: Main development branch
-- `linux`: Linux-specific configurations
-- `macos`: macOS-specific configurations  
-- `windows`: Windows-specific configurations
+### Release Process
+1. Update version in `package.json`, `src/main.js`, and `README.md`
+2. Commit changes and push to all platform branches
+3. Build platform-specific packages
+4. Create Git tag and GitHub release
+5. Upload packages to GitHub release
+6. Update documentation and announce release
 
-## Debian Package
+## Contributing Guidelines
 
-The application can be built as a `.deb` package for Debian-based systems:
-```bash
-npm run build:linux
-```
+### Code Style
+- Use consistent indentation (2 spaces)
+- Follow JavaScript ES6+ standards
+- Comment complex functionality
+- Maintain separation between main and renderer processes
+- Use descriptive variable and function names
 
-The generated `.deb` file will:
-- Install to `/opt/pan-converter`
-- Create desktop entry for application menu
-- Set up proper file associations
-- Declare Pandoc as dependency
+### Adding New Features
+1. Plan feature implementation and UI integration
+2. Update relevant files (main.js, renderer.js, styles.css)
+3. Test across all supported themes
+4. Update documentation and README
+5. Test on multiple platforms if possible
+6. Submit pull request with detailed description
 
-## Testing
+### Bug Reporting
+- Include steps to reproduce
+- Specify platform and version information
+- Attach relevant screenshots or error logs
+- Check existing issues before creating new ones
 
-### Manual Testing
-1. File Operations: New, Open, Save, Save As
-2. Editor Features: Bold, Italic, Headings, Links, Code, Lists, Quotes
-3. Preview Toggle: Show/hide preview pane
-4. Theme Switching: Test all five themes
-5. Export Functions: Test each export format
-6. Auto-save: Verify 30-second auto-save works
+## Future Roadmap
 
-### Platform Testing
-Test on:
-- Windows 10/11
-- macOS 11+ (Big Sur and later)
-- Ubuntu 20.04+, Debian 11+
+### Planned Features
+- [ ] Collaborative editing capabilities
+- [ ] Plugin system for extensions
+- [ ] Advanced markdown extensions (math, diagrams)
+- [ ] Cloud synchronization options
+- [ ] Mobile companion app
+- [ ] Advanced export templates
+- [ ] Spell check and grammar checking
+- [ ] Version control integration
 
-## Known Issues
-- ICO and ICNS icons need manual conversion from PNG
-- Pandoc must be installed separately
-- Large files may cause performance issues
+### Technical Improvements
+- [ ] Performance optimization for large files
+- [ ] Memory usage optimization
+- [ ] Startup time improvements
+- [ ] Better error handling and user feedback
+- [ ] Automated testing suite
+- [ ] Continuous integration/deployment
 
-## Future Enhancements
-- [ ] Add spell checking
-- [ ] Implement find and replace
-- [ ] Add custom CSS for preview
-- [ ] Support for markdown extensions
-- [ ] Plugin system for custom exporters
-- [ ] Cloud sync capabilities
-- [ ] Collaborative editing
+---
 
-## License
-MIT License
-
-## Support
-For issues or feature requests, please open an issue on the GitHub repository.
+**Last Updated**: September 15, 2025
+**Claude Assistant**: Development completed for v1.5.0 with optional advanced export options, removed proprietary dependencies for open-source compatibility, enhanced auto-save functionality, comprehensive document statistics, recent files management, and mathematical expression support using KaTeX.

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 Amit Haridas
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.latex

@@ -0,0 +1,378 @@
+\hypertarget{panconverter}{%
+\section{PanConverter}\label{panconverter}}
+
+A cross-platform Markdown editor and converter powered by Pandoc.
+
+\begin{figure}
+\centering
+\includegraphics{assets/icon.png}
+\caption{PanConverter}
+\end{figure}
+
+\hypertarget{features}{%
+\subsection{Features}\label{features}}
+
+\hypertarget{advanced-markdown-editor}{%
+\subsubsection{✨ Advanced Markdown
+Editor}\label{advanced-markdown-editor}}
+
+\begin{itemize}
+\tightlist
+\item
+  🗂️ \textbf{Tabbed Interface} - Work with multiple files simultaneously
+  in separate tabs
+\item
+  📝 \textbf{Rich Text Editor} - Full-featured editor with syntax
+  highlighting and comprehensive toolbar
+\item
+  🔍 \textbf{Find \& Replace} - Powerful search and replace with match
+  highlighting and navigation
+\item
+  🔢 \textbf{Line Numbers} - Toggle line numbers for easier code editing
+  and navigation
+\item
+  ↩️ \textbf{Smart Auto-Indentation} - Automatic list continuation and
+  intelligent indentation
+\item
+  ⏪ \textbf{Undo/Redo} - Full undo/redo support with keyboard shortcuts
+\item
+  ⌨️ \textbf{Advanced Shortcuts} - Tab indentation, line selection, and
+  smart text formatting
+\item
+  📂 \textbf{File Association Support} - Open markdown files directly
+  from file manager
+\end{itemize}
+
+\hypertarget{themes-interface}{%
+\subsubsection{🎨 Themes \& Interface}\label{themes-interface}}
+
+\begin{itemize}
+\tightlist
+\item
+  👁️ \textbf{Live Preview} - See your markdown rendered in real-time
+  with synchronized scrolling
+\item
+  🎨 \textbf{Multiple Themes} - Choose from Light, Dark, Solarized,
+  Monokai, or GitHub themes
+\item
+  💾 \textbf{Auto-Save} - Never lose your work with automatic saving
+  every 30 seconds
+\end{itemize}
+
+\hypertarget{export-conversion}{%
+\subsubsection{📤 Export \& Conversion}\label{export-conversion}}
+
+\begin{itemize}
+\tightlist
+\item
+  📄 \textbf{Enhanced PDF Export} - Robust PDF generation with multiple
+  LaTeX engine fallbacks (XeLaTeX, PDFLaTeX, wkhtmltopdf)
+\item
+  📄 \textbf{Document Export} - Convert to HTML, DOCX, LaTeX, RTF, ODT,
+  EPUB, PowerPoint (PPTX), and OpenDocument Presentation (ODP)
+\item
+  📊 \textbf{Spreadsheet Export} - Export markdown tables to Excel
+  (XLSX/XLS) and OpenDocument Spreadsheet (ODS) formats
+\item
+  📥 \textbf{Document Import} - Import DOCX, ODT, RTF, HTML, PDF, and
+  presentation files to markdown
+\item
+  📋 \textbf{Table Creation Helper} - Built-in table generator for easy
+  markdown table creation
+\end{itemize}
+
+\hypertarget{platform-support}{%
+\subsubsection{🖥️ Platform Support}\label{platform-support}}
+
+\begin{itemize}
+\tightlist
+\item
+  \textbf{Cross-Platform} - Works seamlessly on Windows, macOS, and
+  Linux
+\end{itemize}
+
+\hypertarget{installation}{%
+\subsection{Installation}\label{installation}}
+
+\hypertarget{prerequisites}{%
+\subsubsection{Prerequisites}\label{prerequisites}}
+
+\begin{itemize}
+\tightlist
+\item
+  \href{https://pandoc.org/installing.html}{Pandoc} must be installed
+  for export functionality
+
+  \begin{itemize}
+  \tightlist
+  \item
+    \textbf{Ubuntu/Debian}: \texttt{sudo\ apt-get\ install\ pandoc}
+  \item
+    \textbf{macOS}: \texttt{brew\ install\ pandoc}
+  \item
+    \textbf{Windows}: Download installer from Pandoc website
+  \end{itemize}
+\end{itemize}
+
+\hypertarget{pdf-export-requirements}{%
+\subsubsection{PDF Export Requirements}\label{pdf-export-requirements}}
+
+For optimal PDF export, install a LaTeX engine (recommended): -
+\textbf{Ubuntu/Debian}:
+\texttt{sudo\ apt-get\ install\ texlive-xetex\ texlive-latex-base} -
+\textbf{macOS}: \texttt{brew\ install\ -\/-cask\ mactex} -
+\textbf{Windows}: Install MiKTeX or TeX Live - \textbf{Alternative}:
+\texttt{sudo\ apt-get\ install\ wkhtmltopdf} (fallback option)
+
+\hypertarget{download}{%
+\subsubsection{Download}\label{download}}
+
+Download the latest release for your platform from the
+\href{https://github.com/amitwh/pan-converter/releases}{Releases} page.
+
+\hypertarget{linux}{%
+\paragraph{Linux}\label{linux}}
+
+\begin{itemize}
+\tightlist
+\item
+  \textbf{AppImage}: \texttt{PanConverter-1.3.1.AppImage} (universal,
+  may require \texttt{-\/-no-sandbox} flag)
+\item
+  \textbf{Debian Package}: \texttt{pan-converter\_1.3.1\_amd64.deb}
+\item
+  \textbf{Snap Package}: \texttt{pan-converter\_1.3.1\_amd64.snap}
+\end{itemize}
+
+\hypertarget{install-from-source}{%
+\subsubsection{Install from Source}\label{install-from-source}}
+
+\begin{Shaded}
+\begin{Highlighting}[]
+\FunctionTok{git}\NormalTok{ clone https://github.com/amitwh/pan{-}converter.git}
+\BuiltInTok{cd}\NormalTok{ pan{-}converter}
+\ExtensionTok{npm}\NormalTok{ install}
+\ExtensionTok{npm}\NormalTok{ start}
+\end{Highlighting}
+\end{Shaded}
+
+\hypertarget{usage}{%
+\subsection{Usage}\label{usage}}
+
+\hypertarget{basic-workflow}{%
+\subsubsection{Basic Workflow}\label{basic-workflow}}
+
+\begin{enumerate}
+\def\labelenumi{\arabic{enumi}.}
+\tightlist
+\item
+  \textbf{Write} - Use the editor to write your Markdown content
+\item
+  \textbf{Preview} - Toggle the preview pane to see rendered output
+\item
+  \textbf{Theme} - Choose your preferred theme from the View menu
+\item
+  \textbf{Export} - Export your document to various formats
+\end{enumerate}
+
+\hypertarget{export-options}{%
+\subsubsection{Export Options}\label{export-options}}
+
+\begin{itemize}
+\tightlist
+\item
+  \textbf{Documents}: HTML, PDF, DOCX, LaTeX, RTF, ODT, EPUB
+\item
+  \textbf{Presentations}: PowerPoint (PPTX), OpenDocument Presentation
+  (ODP)
+\item
+  \textbf{Spreadsheets}: Excel (XLSX/XLS), OpenDocument Spreadsheet
+  (ODS)
+\end{itemize}
+
+\hypertarget{import-conversion}{%
+\subsubsection{Import \& Conversion}\label{import-conversion}}
+
+\begin{itemize}
+\tightlist
+\item
+  \textbf{Import Documents}: Convert DOCX, ODT, RTF, HTML, PDF, and
+  presentation files to Markdown
+\item
+  \textbf{Cross-Format Conversion}: Convert current file between
+  multiple formats
+\item
+  \textbf{Smart Presentation Handling}: Automatic slide-level formatting
+  for PPTX/ODP exports
+\end{itemize}
+
+\hypertarget{table-creation}{%
+\subsubsection{Table Creation}\label{table-creation}}
+
+\begin{itemize}
+\tightlist
+\item
+  Click the table button in the toolbar
+\item
+  Specify number of rows and columns
+\item
+  Automatically generates properly formatted Markdown tables
+\end{itemize}
+
+\hypertarget{keyboard-shortcuts}{%
+\subsection{Keyboard Shortcuts}\label{keyboard-shortcuts}}
+
+\hypertarget{file-operations}{%
+\subsubsection{File Operations}\label{file-operations}}
+
+\begin{itemize}
+\tightlist
+\item
+  \texttt{Ctrl/Cmd\ +\ N} - New file/tab
+\item
+  \texttt{Ctrl/Cmd\ +\ T} - New tab
+\item
+  \texttt{Ctrl/Cmd\ +\ W} - Close current tab
+\item
+  \texttt{Ctrl/Cmd\ +\ Tab} - Switch to next tab
+\item
+  \texttt{Ctrl/Cmd\ +\ O} - Open file
+\item
+  \texttt{Ctrl/Cmd\ +\ S} - Save file
+\item
+  \texttt{Ctrl/Cmd\ +\ Shift\ +\ S} - Save as
+\item
+  \texttt{Ctrl/Cmd\ +\ I} - Import document
+\end{itemize}
+
+\hypertarget{editor-features}{%
+\subsubsection{Editor Features}\label{editor-features}}
+
+\begin{itemize}
+\tightlist
+\item
+  \texttt{Ctrl/Cmd\ +\ F} - Find \& Replace
+\item
+  \texttt{Ctrl/Cmd\ +\ Z} - Undo
+\item
+  \texttt{Ctrl/Cmd\ +\ Shift\ +\ Z} - Redo
+\item
+  \texttt{Tab} - Indent lines or insert 4 spaces
+\item
+  \texttt{Shift\ +\ Tab} - Outdent selected lines
+\item
+  \texttt{Enter} - Auto-continue lists with proper indentation
+\end{itemize}
+
+\hypertarget{view-navigation}{%
+\subsubsection{View \& Navigation}\label{view-navigation}}
+
+\begin{itemize}
+\tightlist
+\item
+  \texttt{Ctrl/Cmd\ +\ P} - Toggle preview
+\item
+  \texttt{Ctrl/Cmd\ +\ Enter} - Toggle preview (alternative)
+\item
+  \texttt{Escape} - Close find dialog
+\end{itemize}
+
+\hypertarget{building}{%
+\subsection{Building}\label{building}}
+
+\begin{Shaded}
+\begin{Highlighting}[]
+\CommentTok{\# Install dependencies}
+\ExtensionTok{npm}\NormalTok{ install}
+
+\CommentTok{\# Generate icons}
+\ExtensionTok{npm}\NormalTok{ run generate{-}icons}
+
+\CommentTok{\# Build for current platform}
+\ExtensionTok{npm}\NormalTok{ run build}
+
+\CommentTok{\# Build for specific platform}
+\ExtensionTok{npm}\NormalTok{ run build:win    }\CommentTok{\# Windows}
+\ExtensionTok{npm}\NormalTok{ run build:mac    }\CommentTok{\# macOS  }
+\ExtensionTok{npm}\NormalTok{ run build:linux  }\CommentTok{\# Linux (generates .deb, .AppImage, and .snap)}
+
+\CommentTok{\# Build for all platforms}
+\ExtensionTok{npm}\NormalTok{ run dist:all}
+\end{Highlighting}
+\end{Shaded}
+
+\hypertarget{version-history}{%
+\subsection{Version History}\label{version-history}}
+
+\begin{itemize}
+\tightlist
+\item
+  \textbf{v1.3.1} - Bug fixes: Fixed file associations for
+  double-clicking .md files, corrected 50/50 layout alignment for
+  editor/preview panes
+\item
+  \textbf{v1.3.0} - Major update: Tabbed interface for multiple files,
+  enhanced PDF export with LaTeX engines, fixed file associations,
+  removed redundant converter menu, improved UI architecture
+\item
+  \textbf{v1.2.1} - Comprehensive editor enhancements: Find \& Replace,
+  Line Numbers, Undo/Redo, Auto-indentation, PowerPoint export, document
+  conversion menu, table creation helper, spreadsheet export
+\item
+  \textbf{v1.1.0} - Added Excel/ODS spreadsheet export, updated author
+  information, renamed to PanConverter
+\item
+  \textbf{v1.0.0} - Initial release with basic markdown editing, themes,
+  and Pandoc export
+\end{itemize}
+
+\hypertarget{known-issues}{%
+\subsection{Known Issues}\label{known-issues}}
+
+\begin{itemize}
+\tightlist
+\item
+  AppImage may require \texttt{-\/-no-sandbox} flag on some Linux
+  systems
+\item
+  Windows/Mac builds require platform-specific build environments
+\item
+  Large files may cause performance issues
+\end{itemize}
+
+\hypertarget{contributing}{%
+\subsection{Contributing}\label{contributing}}
+
+Contributions are welcome! Please feel free to submit a Pull Request to
+the \href{https://github.com/amitwh/pan-converter}{GitHub repository}.
+
+\hypertarget{license}{%
+\subsection{License}\label{license}}
+
+MIT License - see LICENSE file for details.
+
+\hypertarget{author}{%
+\subsection{Author}\label{author}}
+
+\textbf{Amit Haridas} -
+\href{mailto:amit.wh@gmail.com}{\nolinkurl{amit.wh@gmail.com}}
+
+\hypertarget{acknowledgments}{%
+\subsection{Acknowledgments}\label{acknowledgments}}
+
+\begin{itemize}
+\tightlist
+\item
+  Built with \href{https://www.electronjs.org/}{Electron}
+\item
+  Markdown parsing by \href{https://marked.js.org/}{marked}
+\item
+  Export functionality powered by \href{https://pandoc.org/}{Pandoc}
+\item
+  Syntax highlighting by \href{https://highlightjs.org/}{highlight.js}
+\item
+  Spreadsheet export by \href{https://www.npmjs.com/package/xlsx}{XLSX}
+\item
+  HTML sanitization by
+  \href{https://www.npmjs.com/package/dompurify}{DOMPurify}
+\end{itemize}

README.md

@@ -1,29 +1,65 @@
-# Pan Converter
+# PanConverter
 
 A cross-platform Markdown editor and converter powered by Pandoc.
 
-![Pan Converter](assets/icon.png)
+![PanConverter](assets/icon.png)
 
 ## Features
 
-- 📝 **Rich Markdown Editor** - Full-featured editor with syntax highlighting
-- 👁️ **Live Preview** - See your markdown rendered in real-time
+### ✨ Advanced Markdown Editor
+- 🗂️ **Tabbed Interface** - Work with multiple files simultaneously in separate tabs
+- 📝 **Rich Text Editor** - Full-featured editor with syntax highlighting and comprehensive toolbar
+- 🔍 **Find & Replace** - Powerful search and replace with match highlighting and navigation
+- 🔢 **Line Numbers** - Toggle line numbers for easier code editing and navigation
+- ↩️ **Smart Auto-Indentation** - Automatic list continuation and intelligent indentation
+- ⏪ **Undo/Redo** - Full undo/redo support with keyboard shortcuts
+- ⌨️ **Advanced Shortcuts** - Tab indentation, line selection, and smart text formatting
+- 📂 **File Association Support** - Open markdown files directly from file manager
+
+### 🎨 Themes & Interface
+- 👁️ **Live Preview** - See your markdown rendered in real-time with synchronized scrolling
 - 🎨 **Multiple Themes** - Choose from Light, Dark, Solarized, Monokai, or GitHub themes
-- 📤 **Export to Multiple Formats** - Convert to HTML, PDF, DOCX, LaTeX, RTF, ODT, and EPUB
-- 💾 **Auto-Save** - Never lose your work with automatic saving
-- 🖥️ **Cross-Platform** - Works on Windows, macOS, and Linux
+- 💾 **Auto-Save** - Never lose your work with automatic saving every 30 seconds
+- 📊 **Enhanced Statistics** - Detailed document statistics including word count, character count, lines, paragraphs, sentences, and estimated reading time
+- 🕒 **Recent Files** - Quick access to recently opened files via File menu
+- 🧮 **Math Support** - Render mathematical expressions using KaTeX (supports $$, $, \\[\\], \\(\\) delimiters)
+
+### 📤 Export & Conversion
+- 📄 **Enhanced PDF Export** - Robust PDF generation with multiple LaTeX engine fallbacks (XeLaTeX, PDFLaTeX, wkhtmltopdf)
+- 📄 **Document Export** - Convert to HTML, DOCX, LaTeX, RTF, ODT, EPUB, PowerPoint (PPTX), and OpenDocument Presentation (ODP)
+- 📊 **Spreadsheet Export** - Export markdown tables to CSV format for compatibility with any spreadsheet application
+- 📥 **Document Import** - Import DOCX, ODT, RTF, HTML, PDF, and presentation files to markdown
+- 📋 **Table Creation Helper** - Built-in table generator for easy markdown table creation
+
+### 🖥️ Platform Support
+- **Cross-Platform** - Works seamlessly on Windows, macOS, and Linux
 
 ## Installation
 
 ### Prerequisites
 - [Pandoc](https://pandoc.org/installing.html) must be installed for export functionality
+  - **Ubuntu/Debian**: `sudo apt-get install pandoc`
+  - **macOS**: `brew install pandoc`
+  - **Windows**: Download installer from Pandoc website
+
+### PDF Export Requirements
+For optimal PDF export, install a LaTeX engine (recommended):
+- **Ubuntu/Debian**: `sudo apt-get install texlive-xetex texlive-latex-base`
+- **macOS**: `brew install --cask mactex`
+- **Windows**: Install MiKTeX or TeX Live
+- **Alternative**: `sudo apt-get install wkhtmltopdf` (fallback option)
 
 ### Download
-Download the latest release for your platform from the [Releases](https://github.com/yourusername/pan-converter/releases) page.
+Download the latest release for your platform from the [Releases](https://github.com/amitwh/pan-converter/releases) page.
+
+#### Linux
+- **AppImage**: `PanConverter-1.5.0.AppImage` (universal, may require `--no-sandbox` flag)
+- **Debian Package**: `pan-converter_1.5.0_amd64.deb`
+- **Snap Package**: `pan-converter_1.5.0_amd64.snap`
 
 ### Install from Source
 ```bash
-git clone https://github.com/yourusername/pan-converter.git
+git clone https://github.com/amitwh/pan-converter.git
 cd pan-converter
 npm install
 npm start
@@ -31,45 +67,106 @@ npm start
 
 ## Usage
 
+### Basic Workflow
 1. **Write** - Use the editor to write your Markdown content
 2. **Preview** - Toggle the preview pane to see rendered output
 3. **Theme** - Choose your preferred theme from the View menu
-4. **Export** - Export your document to various formats via File > Export
+4. **Export** - Export your document to various formats
+
+### Export Options
+- **Documents**: HTML, PDF, DOCX, LaTeX, RTF, ODT, EPUB
+- **Presentations**: PowerPoint (PPTX), OpenDocument Presentation (ODP)
+- **Spreadsheets**: CSV format for tables (compatible with Excel, LibreOffice, Google Sheets)
+- **Advanced Export Options**: Optional template support, metadata insertion, table of contents, section numbering, and PDF-specific settings
+- **Batch Conversion**: Convert entire folders of markdown files with progress tracking
+
+### Import & Conversion
+- **Import Documents**: Convert DOCX, ODT, RTF, HTML, PDF, and presentation files to Markdown
+- **Cross-Format Conversion**: Convert current file between multiple formats
+- **Smart Presentation Handling**: Automatic slide-level formatting for PPTX/ODP exports
+
+### Table Creation
+- Click the table button in the toolbar
+- Specify number of rows and columns
+- Automatically generates properly formatted Markdown tables
 
 ## Keyboard Shortcuts
 
-- `Ctrl/Cmd + N` - New file
+### File Operations
+- `Ctrl/Cmd + N` - New file/tab
+- `Ctrl/Cmd + T` - New tab
+- `Ctrl/Cmd + W` - Close current tab
+- `Ctrl/Cmd + Tab` - Switch to next tab
 - `Ctrl/Cmd + O` - Open file
 - `Ctrl/Cmd + S` - Save file
 - `Ctrl/Cmd + Shift + S` - Save as
+- `Ctrl/Cmd + I` - Import document
+
+### Editor Features
+- `Ctrl/Cmd + F` - Find & Replace
+- `Ctrl/Cmd + Z` - Undo
+- `Ctrl/Cmd + Shift + Z` - Redo
+- `Tab` - Indent lines or insert 4 spaces
+- `Shift + Tab` - Outdent selected lines
+- `Enter` - Auto-continue lists with proper indentation
+
+### View & Navigation
 - `Ctrl/Cmd + P` - Toggle preview
 - `Ctrl/Cmd + Enter` - Toggle preview (alternative)
+- `Escape` - Close find dialog
 
 ## Building
 
 ```bash
+# Install dependencies
+npm install
+
+# Generate icons
+npm run generate-icons
+
 # Build for current platform
 npm run build
 
 # Build for specific platform
-npm run build:win
-npm run build:mac
-npm run build:linux
+npm run build:win    # Windows
+npm run build:mac    # macOS  
+npm run build:linux  # Linux (generates .deb, .AppImage, and .snap)
 
 # Build for all platforms
 npm run dist:all
 ```
 
+## Version History
+
+- **v1.3.1** - Bug fixes: Fixed file associations for double-clicking .md files, corrected 50/50 layout alignment for editor/preview panes
+- **v1.3.0** - Major update: Tabbed interface for multiple files, enhanced PDF export with LaTeX engines, fixed file associations, removed redundant converter menu, improved UI architecture
+- **v1.2.1** - Comprehensive editor enhancements: Find & Replace, Line Numbers, Undo/Redo, Auto-indentation, PowerPoint export, document conversion menu, table creation helper, spreadsheet export
+- **v1.1.0** - Added Excel/ODS spreadsheet export, updated author information, renamed to PanConverter
+- **v1.0.0** - Initial release with basic markdown editing, themes, and Pandoc export
+
+## Known Issues
+
+- AppImage may require `--no-sandbox` flag on some Linux systems
+- Windows/Mac builds require platform-specific build environments
+- Large files may cause performance issues
+
 ## Contributing
 
-Contributions are welcome! Please feel free to submit a Pull Request.
+Contributions are welcome! Please feel free to submit a Pull Request to the [GitHub repository](https://github.com/amitwh/pan-converter).
 
 ## License
 
-MIT License - see LICENSE file for details
+MIT License - see LICENSE file for details.
+
+## Author
+
+**Amit Haridas** - [amit.wh@gmail.com](mailto:amit.wh@gmail.com)
 
 ## Acknowledgments
 
 - Built with [Electron](https://www.electronjs.org/)
 - Markdown parsing by [marked](https://marked.js.org/)
 - Export functionality powered by [Pandoc](https://pandoc.org/)
+- Syntax highlighting by [highlight.js](https://highlightjs.org/)
+- Spreadsheet export by [XLSX](https://www.npmjs.com/package/xlsx)
+- HTML sanitization by [DOMPurify](https://www.npmjs.com/package/dompurify)

package.json

@@ -1,23 +1,30 @@
 {
   "name": "pan-converter",
-  "version": "1.0.0",
+  "version": "1.5.0",
   "description": "Cross-platform Markdown editor and converter using Pandoc",
   "main": "src/main.js",
   "scripts": {
     "start": "electron .",
     "test": "echo \"Error: no test specified\" && exit 1",
     "build": "electron-builder",
-    "build:win": "electron-builder --win",
+    "build:win": "cross-env CSC_LINK=code-signing-cert.pfx CSC_KEY_PASSWORD=PanConverter2024! electron-builder --win",
+    "build:win-unsigned": "cross-env CSC_IDENTITY_AUTO_DISCOVERY=false electron-builder --win",
     "build:mac": "electron-builder --mac",
     "build:linux": "electron-builder --linux",
     "dist": "electron-builder --publish=never",
     "dist:all": "electron-builder -mwl",
     "generate-icons": "node scripts/generate-icons.js"
   },
-  "keywords": ["markdown", "pandoc", "converter", "editor"],
-  "author": "Your Name",
+  "keywords": [
+    "markdown",
+    "pandoc",
+    "converter",
+    "editor"
+  ],
+  "author": "Amit Haridas <amit.wh@gmail.com>",
   "license": "MIT",
   "devDependencies": {
+    "cross-env": "^10.0.0",
     "electron": "^37.4.0",
     "electron-builder": "^26.0.12",
     "sharp": "^0.34.3"
@@ -31,7 +38,7 @@
   },
   "build": {
     "appId": "com.panconverter.app",
-    "productName": "Pan Converter",
+    "productName": "PanConverter",
     "directories": {
       "output": "dist"
     },
@@ -41,13 +48,64 @@
       "node_modules/**/*",
       "package.json"
     ],
+    "fileAssociations": [
+      {
+        "ext": "md",
+        "name": "Markdown Document",
+        "description": "Markdown Document",
+        "mimeType": "text/markdown",
+        "role": "Editor"
+      },
+      {
+        "ext": "markdown",
+        "name": "Markdown Document",
+        "description": "Markdown Document",
+        "mimeType": "text/markdown",
+        "role": "Editor"
+      }
+    ],
     "mac": {
       "category": "public.app-category.productivity",
       "icon": "assets/icon.icns"
     },
     "win": {
+      "target": [
+        {
           "target": "nsis",
-      "icon": "assets/icon.ico"
+          "arch": ["x64"]
+        },
+        {
+          "target": "portable",
+          "arch": ["x64"]
+        },
+        {
+          "target": "zip",
+          "arch": ["x64"]
+        }
+      ],
+      "icon": "assets/icon.png",
+      "artifactName": "${productName}-${version}-${arch}.${ext}",
+      "requestedExecutionLevel": "asInvoker",
+      "signAndEditExecutable": true
+    },
+    "nsis": {
+      "oneClick": false,
+      "perMachine": false,
+      "allowToChangeInstallationDirectory": true,
+      "displayLanguageSelector": true,
+      "installerIcon": "assets/icon-proper.ico",
+      "uninstallerIcon": "assets/icon-proper.ico",
+      "installerHeaderIcon": "assets/icon-proper.ico",
+      "createDesktopShortcut": true,
+      "createStartMenuShortcut": true,
+      "shortcutName": "PanConverter",
+      "runAfterFinish": true,
+      "menuCategory": "Productivity",
+      "license": "LICENSE",
+      "warningsAsErrors": false,
+      "artifactName": "${productName}-Setup-${version}.${ext}",
+      "deleteAppDataOnUninstall": false,
+      "differentialPackage": true
     },
     "linux": {
       "target": [
@@ -63,7 +121,7 @@
         "pandoc"
       ],
       "description": "Markdown editor and converter using Pandoc",
-      "maintainer": "Your Name <your.email@example.com>"
+      "maintainer": "Amit Haridas <amit.wh@gmail.com>"
     }
   }
 }

src/index.html

@@ -3,13 +3,20 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Pan Converter - Markdown Editor</title>
+    <title>PanConverter - Markdown Editor</title>
     <link rel="stylesheet" href="styles.css">
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/6.65.7/codemirror.min.css">
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/default.min.css">
 </head>
 <body>
     <div class="container">
+        <div class="tab-bar" id="tab-bar">
+            <div class="tab active" data-tab-id="1">
+                <span class="tab-title">Untitled</span>
+                <button class="tab-close" title="Close tab">×</button>
+            </div>
+            <button class="new-tab-button" id="new-tab-btn" title="New tab">+</button>
+        </div>
         <div class="toolbar">
             <button id="btn-bold" title="Bold">
                 <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
@@ -59,6 +66,29 @@
                     <path d="M15 21c3 0 7-1 7-8V5c0-1.25-.757-2.017-2-2h-4c-1.25 0-2 .75-2 1.972V11c0 1.25.75 2 2 2h.75c0 2.25.25 4-2.75 4v3c0 1 0 1 1 1z"></path>
                 </svg>
             </button>
+            <button id="btn-table" title="Insert Table">
+                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                    <rect x="3" y="3" width="18" height="18" rx="2" ry="2"></rect>
+                    <line x1="3" y1="9" x2="21" y2="9"></line>
+                    <line x1="3" y1="15" x2="21" y2="15"></line>
+                    <line x1="9" y1="3" x2="9" y2="21"></line>
+                    <line x1="15" y1="3" x2="15" y2="21"></line>
+                </svg>
+            </button>
+            <div class="toolbar-separator"></div>
+            <button id="btn-find" title="Find & Replace (Ctrl+F)">
+                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                    <circle cx="11" cy="11" r="8"></circle>
+                    <path d="m21 21-4.35-4.35"></path>
+                </svg>
+            </button>
+            <button id="btn-line-numbers" title="Toggle Line Numbers">
+                <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                    <path d="M3 6h18"></path>
+                    <path d="M3 12h18"></path>
+                    <path d="M3 18h18"></path>
+                </svg>
+            </button>
             <div class="toolbar-separator"></div>
             <button id="btn-preview-toggle" title="Toggle Preview">
                 <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
@@ -68,12 +98,219 @@
             </button>
         </div>
         
+        <!-- Find & Replace Dialog -->
+        <div id="find-dialog" class="find-dialog hidden">
+            <div class="find-controls">
+                <input type="text" id="find-input" placeholder="Find...">
+                <input type="text" id="replace-input" placeholder="Replace...">
+                <button id="btn-find-prev" title="Previous">↑</button>
+                <button id="btn-find-next" title="Next">↓</button>
+                <button id="btn-replace" title="Replace">Replace</button>
+                <button id="btn-replace-all" title="Replace All">All</button>
+                <button id="btn-find-close" title="Close">×</button>
+            </div>
+            <div class="find-info">
+                <span id="find-count">0 matches</span>
+            </div>
+        </div>
+
+        <!-- Export Options Dialog -->
+        <div id="export-dialog" class="export-dialog hidden">
+            <div class="export-dialog-content">
+                <div class="export-dialog-header">
+                    <h3 id="export-dialog-title">Export Options</h3>
+                    <button id="export-dialog-close" title="Close">×</button>
+                </div>
+                <div class="export-dialog-body">
+                    <!-- Simple/Advanced Export Toggle -->
+                    <div class="export-section export-mode-toggle">
+                        <label class="checkbox-label">
+                            <input type="checkbox" id="advanced-export-toggle">
+                            <span class="checkmark"></span>
+                            Show Advanced Options
+                        </label>
+                        <small class="export-help">Enable for templates, metadata, bibliography, and advanced PDF settings</small>
+                    </div>
+
+                    <!-- Advanced Export Options (hidden by default) -->
+                    <div id="advanced-export-options" class="advanced-options hidden">
+                        <div class="export-section">
+                            <label for="export-template">Template:</label>
+                        <select id="export-template">
+                            <option value="default">Default</option>
+                            <option value="custom">Custom (Browse...)</option>
+                        </select>
+                        <input type="file" id="template-file-input" accept=".tex,.html,.docx,.odt" style="display: none;">
+                        <input type="text" id="custom-template-path" placeholder="Template file path..." style="display: none;">
+                    </div>
+
+                    <div class="export-section">
+                        <label>Metadata:</label>
+                        <div class="metadata-container">
+                            <div class="metadata-field">
+                                <input type="text" placeholder="title" class="metadata-key">
+                                <input type="text" placeholder="Document title" class="metadata-value">
+                            </div>
+                            <div class="metadata-field">
+                                <input type="text" placeholder="author" class="metadata-key">
+                                <input type="text" placeholder="Author name" class="metadata-value">
+                            </div>
+                            <div class="metadata-field">
+                                <input type="text" placeholder="date" class="metadata-key">
+                                <input type="text" placeholder="Date" class="metadata-value">
+                            </div>
+                            <div class="metadata-field">
+                                <input type="text" placeholder="subject" class="metadata-key">
+                                <input type="text" placeholder="Subject" class="metadata-value">
+                            </div>
+                        </div>
+                        <button id="add-metadata-field" type="button">+ Add Field</button>
+                    </div>
+
+                    <div class="export-section">
+                        <label>Document Options:</label>
+                        <div class="checkbox-group">
+                            <label><input type="checkbox" id="export-toc"> Table of Contents</label>
+                            <label><input type="checkbox" id="export-number-sections"> Number Sections</label>
+                            <label><input type="checkbox" id="export-citeproc"> Process Citations</label>
+                        </div>
+                        <div class="form-row">
+                            <label for="export-toc-depth">TOC Depth:</label>
+                            <input type="number" id="export-toc-depth" min="1" max="6" value="3">
+                        </div>
+                    </div>
+
+                    <div class="export-section pdf-only">
+                        <label>PDF Options:</label>
+                        <div class="form-row">
+                            <label for="pdf-engine">PDF Engine:</label>
+                            <select id="pdf-engine">
+                                <option value="xelatex">XeLaTeX (Recommended)</option>
+                                <option value="pdflatex">PDFLaTeX</option>
+                                <option value="lualatex">LuaLaTeX</option>
+                            </select>
+                        </div>
+                        <div class="form-row">
+                            <label for="pdf-geometry">Page Margins:</label>
+                            <select id="pdf-geometry">
+                                <option value="margin=1in">1 inch (Default)</option>
+                                <option value="margin=0.75in">0.75 inch</option>
+                                <option value="margin=1.25in">1.25 inch</option>
+                                <option value="margin=2cm">2 cm</option>
+                                <option value="margin=2.5cm">2.5 cm</option>
+                                <option value="custom">Custom...</option>
+                            </select>
+                            <input type="text" id="custom-geometry" placeholder="e.g., margin=1.5in" style="display: none;">
+                        </div>
+                    </div>
+
+                    <div class="export-section">
+                        <label>Bibliography:</label>
+                        <div class="form-row">
+                            <input type="text" id="bibliography-file" placeholder="Bibliography file (.bib, .yaml, .json)">
+                            <button id="browse-bibliography">Browse</button>
+                        </div>
+                        <div class="form-row">
+                            <input type="text" id="csl-file" placeholder="Citation style file (.csl)">
+                            <button id="browse-csl">Browse</button>
+                        </div>
+                    </div>
+                    </div> <!-- End advanced-export-options -->
+
+                    <!-- Basic Export Options (always visible) -->
+                    <div class="export-section basic-options">
+                        <label>Quick Export Settings:</label>
+                        <div class="checkbox-group">
+                            <label><input type="checkbox" id="basic-toc"> Include Table of Contents</label>
+                            <label><input type="checkbox" id="basic-number-sections"> Number Sections</label>
+                        </div>
+                    </div>
+                </div>
+                <div class="export-dialog-footer">
+                    <button id="export-cancel">Cancel</button>
+                    <button id="export-confirm" class="primary">Export</button>
+                </div>
+            </div>
+        </div>
+
+        <!-- Batch Conversion Dialog -->
+        <div id="batch-dialog" class="batch-dialog hidden">
+            <div class="batch-dialog-content">
+                <div class="batch-dialog-header">
+                    <h3>Batch File Conversion</h3>
+                    <button id="batch-dialog-close" title="Close">×</button>
+                </div>
+                <div class="batch-dialog-body">
+                    <div class="batch-section">
+                        <label>Input Folder:</label>
+                        <div class="folder-input-group">
+                            <input type="text" id="batch-input-folder" placeholder="Select folder containing markdown files..." readonly>
+                            <button id="browse-input-folder">Browse</button>
+                        </div>
+                    </div>
+
+                    <div class="batch-section">
+                        <label>Output Folder:</label>
+                        <div class="folder-input-group">
+                            <input type="text" id="batch-output-folder" placeholder="Select output folder..." readonly>
+                            <button id="browse-output-folder">Browse</button>
+                        </div>
+                    </div>
+
+                    <div class="batch-section">
+                        <label for="batch-format">Output Format:</label>
+                        <select id="batch-format">
+                            <option value="html">HTML</option>
+                            <option value="pdf">PDF</option>
+                            <option value="docx">DOCX</option>
+                            <option value="latex">LaTeX</option>
+                            <option value="rtf">RTF</option>
+                            <option value="odt">ODT</option>
+                            <option value="epub">EPUB</option>
+                            <option value="pptx">PowerPoint (PPTX)</option>
+                            <option value="odp">OpenDocument Presentation (ODP)</option>
+                        </select>
+                    </div>
+
+                    <div class="batch-section">
+                        <label>
+                            <input type="checkbox" id="batch-include-subfolders" checked>
+                            Include subfolders (recursive)
+                        </label>
+                    </div>
+
+                    <div class="batch-section">
+                        <button id="batch-show-options" type="button">Advanced Export Options...</button>
+                    </div>
+
+                    <div id="batch-progress" class="batch-progress hidden">
+                        <div class="progress-bar">
+                            <div class="progress-fill" id="batch-progress-fill"></div>
+                        </div>
+                        <div class="progress-text">
+                            <span id="batch-progress-text">Processing...</span>
+                            <span id="batch-progress-count">0 / 0</span>
+                        </div>
+                    </div>
+                </div>
+                <div class="batch-dialog-footer">
+                    <button id="batch-cancel">Cancel</button>
+                    <button id="batch-start" class="primary" disabled>Start Conversion</button>
+                </div>
+            </div>
+        </div>
+
         <div class="editor-container">
-            <div id="editor-pane" class="pane">
-                <textarea id="editor"></textarea>
+            <div class="tab-content active" id="tab-content-1" data-tab-id="1">
+                <div id="editor-pane-1" class="pane">
+                    <div class="editor-wrapper">
+                        <div id="line-numbers-1" class="line-numbers hidden"></div>
+                        <textarea id="editor-1" class="editor-textarea"></textarea>
+                    </div>
+                </div>
+                <div id="preview-pane-1" class="pane">
+                    <div id="preview-1" class="preview-content"></div>
                 </div>
-            <div id="preview-pane" class="pane">
-                <div id="preview"></div>
             </div>
         </div>
         

src/main.js

@@ -3,6 +3,21 @@ const path = require('path');
 const fs = require('fs');
 const { exec } = require('child_process');
 
+// Get the system Pandoc path
+function getPandocPath() {
+  // Always use system pandoc - no bundled binaries
+  return 'pandoc';
+}
+
+// Check if Pandoc is available
+function checkPandocAvailable() {
+  return new Promise((resolve) => {
+    exec('pandoc --version', (error) => {
+      resolve(!error);
+    });
+  });
+}
+
 // Simple storage implementation to replace electron-store
 const settingsPath = path.join(app.getPath('userData'), 'settings.json');
 const store = {
@@ -27,7 +42,7 @@ const store = {
 };
 
 let mainWindow;
-let currentFile = null;
+let currentFile = null; // This will now represent the active tab's file
 
 function createWindow() {
   mainWindow = new BrowserWindow({
@@ -47,6 +62,55 @@ function createWindow() {
   mainWindow.on('closed', () => {
     mainWindow = null;
   });
+
+  // Handle pending file from file association will be handled by renderer-ready event
+}
+
+function buildRecentFilesMenu() {
+  const recentFiles = getRecentFiles();
+
+  if (recentFiles.length === 0) {
+    return [
+      {
+        label: 'No recent files',
+        enabled: false
+      }
+    ];
+  }
+
+  const recentFileItems = recentFiles.map(filePath => ({
+    label: filePath.split(/[\\/]/).pop(), // Get filename only
+    click: () => {
+      if (fs.existsSync(filePath)) {
+        currentFile = filePath;
+        const content = fs.readFileSync(filePath, 'utf-8');
+        mainWindow.webContents.send('file-opened', { path: filePath, content });
+      } else {
+        dialog.showErrorBox('File Not Found', `The file "${filePath}" could not be found.`);
+      }
+    },
+    toolTip: filePath // Show full path in tooltip
+  }));
+
+  return [
+    ...recentFileItems,
+    { type: 'separator' },
+    {
+      label: 'Clear Recent Files',
+      click: () => {
+        mainWindow.webContents.send('clear-recent-files');
+      }
+    }
+  ];
+}
+
+function getRecentFiles() {
+  try {
+    const recentFiles = JSON.parse(fs.readFileSync(path.join(app.getPath('userData'), 'recent-files.json'), 'utf-8'));
+    return recentFiles.filter(file => fs.existsSync(file));
+  } catch (e) {
+    return [];
+  }
 }
 
 function createMenu() {
@@ -75,6 +139,16 @@ function createMenu() {
           click: saveAsFile
         },
         { type: 'separator' },
+        {
+          label: 'Recent Files',
+          submenu: buildRecentFilesMenu()
+        },
+        { type: 'separator' },
+        {
+          label: 'Import Document...',
+          accelerator: 'CmdOrCtrl+I',
+          click: importDocument
+        },
         {
           label: 'Export',
           submenu: [
@@ -84,7 +158,12 @@ function createMenu() {
             { label: 'LaTeX', click: () => exportFile('latex') },
             { label: 'RTF', click: () => exportFile('rtf') },
             { label: 'ODT', click: () => exportFile('odt') },
-            { label: 'EPUB', click: () => exportFile('epub') }
+            { label: 'EPUB', click: () => exportFile('epub') },
+            { type: 'separator' },
+            { label: 'PowerPoint (PPTX)', click: () => exportFile('pptx') },
+            { label: 'OpenDocument Presentation (ODP)', click: () => exportFile('odp') },
+            { type: 'separator' },
+            { label: 'CSV (Tables)', click: () => exportSpreadsheet('csv') }
           ]
         },
         { type: 'separator' },
@@ -99,12 +178,18 @@ function createMenu() {
       label: 'Edit',
       submenu: [
         { label: 'Undo', accelerator: 'CmdOrCtrl+Z', role: 'undo' },
-        { label: 'Redo', accelerator: 'CmdOrCtrl+Y', role: 'redo' },
+        { label: 'Redo', accelerator: 'CmdOrCtrl+Shift+Z', role: 'redo' },
         { type: 'separator' },
         { label: 'Cut', accelerator: 'CmdOrCtrl+X', role: 'cut' },
         { label: 'Copy', accelerator: 'CmdOrCtrl+C', role: 'copy' },
         { label: 'Paste', accelerator: 'CmdOrCtrl+V', role: 'paste' },
-        { label: 'Select All', accelerator: 'CmdOrCtrl+A', role: 'selectAll' }
+        { label: 'Select All', accelerator: 'CmdOrCtrl+A', role: 'selectAll' },
+        { type: 'separator' },
+        { 
+          label: 'Find & Replace', 
+          accelerator: 'CmdOrCtrl+F', 
+          click: () => mainWindow.webContents.send('toggle-find') 
+        }
       ]
     },
     {
@@ -126,6 +211,27 @@ function createMenu() {
           ]
         },
         { type: 'separator' },
+        {
+          label: 'Font Size',
+          submenu: [
+            { 
+              label: 'Increase Font Size', 
+              accelerator: 'CmdOrCtrl+Shift+Plus',
+              click: () => mainWindow.webContents.send('adjust-font-size', 'increase')
+            },
+            { 
+              label: 'Decrease Font Size', 
+              accelerator: 'CmdOrCtrl+Shift+-',
+              click: () => mainWindow.webContents.send('adjust-font-size', 'decrease')
+            },
+            { 
+              label: 'Reset Font Size',
+              accelerator: 'CmdOrCtrl+Shift+0',
+              click: () => mainWindow.webContents.send('adjust-font-size', 'reset')
+            }
+          ]
+        },
+        { type: 'separator' },
         { label: 'Reload', accelerator: 'CmdOrCtrl+R', role: 'reload' },
         { label: 'Toggle DevTools', accelerator: 'F12', role: 'toggleDevTools' },
         { type: 'separator' },
@@ -134,6 +240,15 @@ function createMenu() {
         { label: 'Reset Zoom', accelerator: 'CmdOrCtrl+0', role: 'resetZoom' }
       ]
     },
+    {
+      label: 'Batch',
+      submenu: [
+        {
+          label: 'Convert Folder...',
+          click: () => showBatchConversionDialog()
+        }
+      ]
+    },
     {
       label: 'Help',
       submenu: [
@@ -142,16 +257,16 @@ function createMenu() {
           click: () => {
             dialog.showMessageBox(mainWindow, {
               type: 'info',
-              title: 'About Pan Converter',
-              message: 'Pan Converter',
-              detail: 'A cross-platform Markdown editor and converter using Pandoc.\n\nVersion: 1.0.0\nLicense: MIT',
+              title: 'About PanConverter',
+              message: 'PanConverter',
+              detail: 'A cross-platform Markdown editor and converter using Pandoc.\n\nVersion: 1.5.0\nAuthor: Amit Haridas\nEmail: amit.wh@gmail.com\nLicense: MIT\n\nFeatures:\n• Tabbed interface for multiple files\n• Advanced markdown editing with live preview\n• Enhanced PDF export with LaTeX engines\n• Optional advanced export options\n• Advanced export options with templates and metadata\n• Batch file conversion with progress tracking\n• Improved preview typography and spacing\n• Adjustable font sizes via menu (Ctrl+Shift+Plus/Minus)\n• Complete theme support including Monokai fixes\n• Find & replace with match highlighting\n• Line numbers and auto-indentation\n• Export to multiple formats via Pandoc\n• PowerPoint & presentation export\n• Export tables to CSV format\n• Document import & conversion\n• Table creation helper\n• Multiple themes support\n• Undo/redo functionality\n• Live word count and statistics',
               buttons: ['OK']
             });
           }
         },
         {
           label: 'Documentation',
-          click: () => shell.openExternal('https://github.com/yourusername/pan-converter')
+          click: () => shell.openExternal('https://github.com/amitwh/pan-converter')
         }
       ]
     }
@@ -198,6 +313,19 @@ function exportFile(format) {
     return;
   }
 
+  // Show export options dialog
+  showExportOptionsDialog(format);
+}
+
+function showExportOptionsDialog(format) {
+  mainWindow.webContents.send('show-export-dialog', format);
+}
+
+function showBatchConversionDialog() {
+  mainWindow.webContents.send('show-batch-dialog');
+}
+
+function performExportWithOptions(format, options) {
   const outputFile = dialog.showSaveDialogSync(mainWindow, {
     defaultPath: currentFile.replace(/\.[^/.]+$/, `.${format}`),
     filters: [
@@ -206,23 +334,162 @@ function exportFile(format) {
   });
 
   if (outputFile) {
-    const pandocCmd = `pandoc "${currentFile}" -o "${outputFile}"`;
+    let pandocCmd = `${getPandocPath()} "${currentFile}" -o "${outputFile}"`;
 
+    // Add template if specified
+    if (options.template && options.template !== 'default') {
+      pandocCmd += ` --template="${options.template}"`;
+    }
+
+    // Add metadata
+    if (options.metadata) {
+      for (const [key, value] of Object.entries(options.metadata)) {
+        if (value.trim()) {
+          pandocCmd += ` -M ${key}="${value.replace(/"/g, '\\"')}"`;
+        }
+      }
+    }
+
+    // Add variables
+    if (options.variables) {
+      for (const [key, value] of Object.entries(options.variables)) {
+        if (value.trim()) {
+          pandocCmd += ` -V ${key}="${value.replace(/"/g, '\\"')}"`;
+        }
+      }
+    }
+
+    // Add other options
+    if (options.toc) pandocCmd += ' --toc';
+    if (options.tocDepth) pandocCmd += ` --toc-depth=${options.tocDepth}`;
+    if (options.numberSections) pandocCmd += ' --number-sections';
+    if (options.citeproc) pandocCmd += ' --citeproc';
+    if (options.bibliography) pandocCmd += ` --bibliography="${options.bibliography}"`;
+    if (options.csl) pandocCmd += ` --csl="${options.csl}"`;
+
+    // Add specific options for PDF export to ensure proper generation
+    if (format === 'pdf') {
+      const pdfEngine = options.pdfEngine || 'xelatex';
+      const geometry = options.geometry || 'margin=1in';
+      pandocCmd += ` --pdf-engine=${pdfEngine} -V geometry:${geometry}`;
+
+      // Try with specified PDF engine
+      exec(pandocCmd, (error, stdout, stderr) => {
+        if (error) {
+          // Try fallback engines if the specified one fails
+          const fallbackEngines = ['pdflatex', 'lualatex'];
+          tryPdfFallback(currentFile, outputFile, fallbackEngines, 0, options, error);
+        } else {
+          showExportSuccess(outputFile);
+        }
+      });
+    } else {
       exec(pandocCmd, (error, stdout, stderr) => {
         if (error) {
           dialog.showErrorBox('Export Error', `Failed to export: ${error.message}\n\nMake sure Pandoc is installed.`);
         } else {
+          showExportSuccess(outputFile);
+        }
+      });
+    }
+  }
+}
+
+function tryPdfFallback(inputFile, outputFile, engines, index, options, lastError) {
+  if (index >= engines.length) {
+    dialog.showErrorBox('PDF Export Error',
+      `Failed to export PDF with all available engines. Please ensure you have one of the following installed:\n` +
+      `• XeLaTeX (recommended): sudo apt-get install texlive-xetex\n` +
+      `• PDFLaTeX: sudo apt-get install texlive-latex-base\n` +
+      `• LuaLaTeX: sudo apt-get install texlive-luatex\n\n` +
+      `Last error: ${lastError.message}`
+    );
+    return;
+  }
+
+  const engine = engines[index];
+  const geometry = options.geometry || 'margin=1in';
+  let pandocCmd = `${getPandocPath()} "${inputFile}" --pdf-engine=${engine} -V geometry:${geometry} -o "${outputFile}"`;
+
+  // Add all other options
+  if (options.template && options.template !== 'default') {
+    pandocCmd += ` --template="${options.template}"`;
+  }
+
+  if (options.metadata) {
+    for (const [key, value] of Object.entries(options.metadata)) {
+      if (value.trim()) {
+        pandocCmd += ` -M ${key}="${value.replace(/"/g, '\\"')}"`;
+      }
+    }
+  }
+
+  exec(pandocCmd, (error, stdout, stderr) => {
+    if (error) {
+      tryPdfFallback(inputFile, outputFile, engines, index + 1, options, error);
+    } else {
+      showExportSuccess(outputFile);
+    }
+  });
+}
+
+function showExportSuccess(outputFile) {
   dialog.showMessageBox(mainWindow, {
     type: 'info',
     title: 'Export Complete',
     message: `File exported successfully to ${outputFile}`,
     buttons: ['OK']
   });
+}
+
+function exportSpreadsheet(format) {
+  if (!currentFile) {
+    dialog.showErrorBox('Error', 'Please save the file first');
+    return;
+  }
+
+  // Request content from renderer
+  mainWindow.webContents.send('get-content-for-spreadsheet', format);
+}
+
+function importDocument() {
+  const files = dialog.showOpenDialogSync(mainWindow, {
+    properties: ['openFile'],
+    filters: [
+      { name: 'Documents', extensions: ['docx', 'odt', 'rtf', 'html', 'tex', 'epub', 'pdf'] },
+      { name: 'Presentations', extensions: ['pptx', 'odp'] },
+      { name: 'All Files', extensions: ['*'] }
+    ]
+  });
+
+  if (files && files[0]) {
+    const inputFile = files[0];
+    const outputFile = inputFile.replace(/\.[^/.]+$/, '.md');
+    
+    // Convert to markdown using pandoc
+    const pandocCmd = `${getPandocPath()} "${inputFile}" -t markdown -o "${outputFile}"`;
+    
+    exec(pandocCmd, (error, stdout, stderr) => {
+      if (error) {
+        dialog.showErrorBox('Import Error', `Failed to import: ${error.message}\n\nMake sure Pandoc is installed.`);
+      } else {
+        // Open the converted markdown file
+        currentFile = outputFile;
+        const content = fs.readFileSync(outputFile, 'utf-8');
+        mainWindow.webContents.send('file-opened', { path: outputFile, content });
+        
+        dialog.showMessageBox(mainWindow, {
+          type: 'info',
+          title: 'Import Complete',
+          message: `Document imported successfully as ${outputFile}`,
+          buttons: ['OK']
+        });
       }
     });
   }
 }
 
+
 function setTheme(theme) {
   store.set('theme', theme);
   mainWindow.webContents.send('theme-changed', theme);
@@ -247,7 +514,279 @@ ipcMain.on('get-theme', (event) => {
   event.reply('theme-changed', theme);
 });
 
-app.whenReady().then(createWindow);
+// Handle tab file tracking for exports
+ipcMain.on('set-current-file', (event, filePath) => {
+  currentFile = filePath;
+});
+
+// Handle renderer ready for file association
+ipcMain.on('renderer-ready', (event) => {
+  if (app.pendingFile) {
+    openFileFromPath(app.pendingFile);
+    app.pendingFile = null;
+  }
+});
+
+// Handle export with options
+ipcMain.on('export-with-options', (event, { format, options }) => {
+  performExportWithOptions(format, options);
+});
+
+// Handle batch conversion
+ipcMain.on('batch-convert', (event, { inputFolder, outputFolder, format, options }) => {
+  performBatchConversion(inputFolder, outputFolder, format, options);
+});
+
+// Handle folder selection for batch conversion
+ipcMain.on('select-folder', (event, type) => {
+  const folder = dialog.showOpenDialogSync(mainWindow, {
+    properties: ['openDirectory']
+  });
+
+  if (folder && folder[0]) {
+    event.reply('folder-selected', { type, path: folder[0] });
+  }
+});
+
+ipcMain.on('export-spreadsheet', (event, { content, format }) => {
+  const outputFile = dialog.showSaveDialogSync(mainWindow, {
+    defaultPath: currentFile.replace(/\.[^/.]+$/, `.${format}`),
+    filters: [
+      { name: format.toUpperCase(), extensions: [format] }
+    ]
+  });
+
+  if (outputFile) {
+    try {
+      // Parse markdown content to extract tables
+      const tables = extractTablesFromMarkdown(content);
+
+      if (tables.length === 0) {
+        dialog.showErrorBox('Export Error', 'No tables found in the markdown content');
+        return;
+      }
+
+      // Convert tables to CSV format
+      let csvContent = '';
+      tables.forEach((table, index) => {
+        if (index > 0) csvContent += '\n\n'; // Separate multiple tables
+        if (tables.length > 1) csvContent += `"Table ${index + 1}"\n`;
+
+        table.forEach(row => {
+          const csvRow = row.map(cell => {
+            // Escape quotes and wrap in quotes if necessary
+            const cleanCell = cell.replace(/"/g, '""');
+            return cleanCell.includes(',') || cleanCell.includes('"') || cleanCell.includes('\n')
+              ? `"${cleanCell}"` : cleanCell;
+          }).join(',');
+          csvContent += csvRow + '\n';
+        });
+      });
+
+      // Write CSV file
+      fs.writeFileSync(outputFile, csvContent, 'utf-8');
+
+      dialog.showMessageBox(mainWindow, {
+        type: 'info',
+        title: 'Export Complete',
+        message: `CSV exported successfully to ${outputFile}`,
+        buttons: ['OK']
+      });
+    } catch (error) {
+      dialog.showErrorBox('Export Error', `Failed to export: ${error.message}`);
+    }
+  }
+});
+
+// Helper function to extract tables from markdown
+function extractTablesFromMarkdown(markdown) {
+  const tables = [];
+  const lines = markdown.split('\n');
+  let currentTable = [];
+  let inTable = false;
+  
+  for (const line of lines) {
+    if (line.includes('|')) {
+      if (!inTable) {
+        inTable = true;
+        currentTable = [];
+      }
+      
+      // Skip separator lines (|---|---|)
+      if (!line.match(/^\s*\|?\s*:?-+:?\s*\|/)) {
+        const cells = line.split('|')
+          .map(cell => cell.trim())
+          .filter(cell => cell !== '');
+        
+        if (cells.length > 0) {
+          currentTable.push(cells);
+        }
+      }
+    } else if (inTable && line.trim() === '') {
+      // End of table
+      if (currentTable.length > 0) {
+        tables.push(currentTable);
+      }
+      currentTable = [];
+      inTable = false;
+    }
+  }
+  
+  // Add last table if exists
+  if (currentTable.length > 0) {
+    tables.push(currentTable);
+  }
+  
+  return tables;
+}
+
+function performBatchConversion(inputFolder, outputFolder, format, options) {
+  if (!fs.existsSync(inputFolder)) {
+    dialog.showErrorBox('Error', 'Input folder does not exist');
+    return;
+  }
+
+  // Create output folder if it doesn't exist
+  if (!fs.existsSync(outputFolder)) {
+    try {
+      fs.mkdirSync(outputFolder, { recursive: true });
+    } catch (error) {
+      dialog.showErrorBox('Error', `Failed to create output folder: ${error.message}`);
+      return;
+    }
+  }
+
+  // Find all markdown files in input folder
+  const markdownFiles = [];
+
+  function findMarkdownFiles(dir) {
+    const files = fs.readdirSync(dir);
+
+    for (const file of files) {
+      const fullPath = path.join(dir, file);
+      const stat = fs.statSync(fullPath);
+
+      if (stat.isDirectory()) {
+        findMarkdownFiles(fullPath); // Recursive search
+      } else if (file.match(/\.(md|markdown)$/i)) {
+        markdownFiles.push(fullPath);
+      }
+    }
+  }
+
+  findMarkdownFiles(inputFolder);
+
+  if (markdownFiles.length === 0) {
+    dialog.showErrorBox('No Files Found', 'No markdown files found in the selected folder');
+    return;
+  }
+
+  // Show progress dialog
+  let completedCount = 0;
+  const totalCount = markdownFiles.length;
+
+  // Process each file
+  const processNextFile = (index) => {
+    if (index >= markdownFiles.length) {
+      // All files processed
+      dialog.showMessageBox(mainWindow, {
+        type: 'info',
+        title: 'Batch Conversion Complete',
+        message: `Successfully converted ${completedCount} out of ${totalCount} files to ${format.toUpperCase()}.`,
+        buttons: ['OK']
+      });
+      return;
+    }
+
+    const inputFile = markdownFiles[index];
+    const relativePath = path.relative(inputFolder, inputFile);
+    const baseName = path.basename(relativePath, path.extname(relativePath));
+    const outputFile = path.join(outputFolder, relativePath.replace(/\.(md|markdown)$/i, `.${format}`));
+
+    // Create subdirectories in output folder if needed
+    const outputDir = path.dirname(outputFile);
+    if (!fs.existsSync(outputDir)) {
+      fs.mkdirSync(outputDir, { recursive: true });
+    }
+
+    // Build pandoc command
+    let pandocCmd = `${getPandocPath()} "${inputFile}" -o "${outputFile}"`;
+
+    // Add template if specified
+    if (options.template && options.template !== 'default') {
+      pandocCmd += ` --template="${options.template}"`;
+    }
+
+    // Add metadata
+    if (options.metadata) {
+      for (const [key, value] of Object.entries(options.metadata)) {
+        if (value.trim()) {
+          pandocCmd += ` -M ${key}="${value.replace(/"/g, '\\"')}"`;
+        }
+      }
+    }
+
+    // Add variables
+    if (options.variables) {
+      for (const [key, value] of Object.entries(options.variables)) {
+        if (value.trim()) {
+          pandocCmd += ` -V ${key}="${value.replace(/"/g, '\\"')}"`;
+        }
+      }
+    }
+
+    // Add other options
+    if (options.toc) pandocCmd += ' --toc';
+    if (options.tocDepth) pandocCmd += ` --toc-depth=${options.tocDepth}`;
+    if (options.numberSections) pandocCmd += ' --number-sections';
+    if (options.citeproc) pandocCmd += ' --citeproc';
+    if (options.bibliography) pandocCmd += ` --bibliography="${options.bibliography}"`;
+    if (options.csl) pandocCmd += ` --csl="${options.csl}"`;
+
+    // Add PDF-specific options
+    if (format === 'pdf') {
+      const pdfEngine = options.pdfEngine || 'xelatex';
+      const geometry = options.geometry || 'margin=1in';
+      pandocCmd += ` --pdf-engine=${pdfEngine} -V geometry:${geometry}`;
+    }
+
+    // Execute conversion
+    exec(pandocCmd, (error, stdout, stderr) => {
+      if (!error) {
+        completedCount++;
+      }
+
+      // Update progress (you could send this to renderer for a progress bar)
+      mainWindow.webContents.send('batch-progress', {
+        completed: index + 1,
+        total: totalCount,
+        currentFile: path.basename(inputFile),
+        success: !error
+      });
+
+      // Process next file
+      processNextFile(index + 1);
+    });
+  };
+
+  // Start processing
+  processNextFile(0);
+}
+
+app.whenReady().then(() => {
+  createWindow();
+  
+  // Handle file association on app startup
+  // Process all command line arguments except the first two (node and script path)
+  const fileArgs = process.argv.slice(2);
+  for (const arg of fileArgs) {
+    if ((arg.endsWith('.md') || arg.endsWith('.markdown')) && fs.existsSync(arg)) {
+      // Store the file to open after window is ready
+      app.pendingFile = arg;
+      break;
+    }
+  }
+});
 
 app.on('window-all-closed', () => {
   if (process.platform !== 'darwin') {
@@ -260,3 +799,49 @@ app.on('activate', () => {
     createWindow();
   }
 });
+
+// IPC handlers for recent files
+ipcMain.on('save-recent-files', (event, recentFiles) => {
+  try {
+    const userDataPath = app.getPath('userData');
+    const recentFilesPath = path.join(userDataPath, 'recent-files.json');
+    fs.writeFileSync(recentFilesPath, JSON.stringify(recentFiles, null, 2));
+  } catch (error) {
+    console.error('Error saving recent files:', error);
+  }
+});
+
+ipcMain.on('clear-recent-files', (event) => {
+  try {
+    const userDataPath = app.getPath('userData');
+    const recentFilesPath = path.join(userDataPath, 'recent-files.json');
+    fs.writeFileSync(recentFilesPath, JSON.stringify([], null, 2));
+    // Rebuild menu to reflect changes
+    createMenu();
+    event.reply('recent-files-cleared');
+  } catch (error) {
+    console.error('Error clearing recent files:', error);
+  }
+});
+
+// Handle file opening on macOS
+app.on('open-file', (event, filePath) => {
+  event.preventDefault();
+  if (mainWindow) {
+    openFileFromPath(filePath);
+  } else {
+    // Store the file path to open after window is created
+    app.pendingFile = filePath;
+  }
+});
+
+// Handle file opening from command line or file association
+function openFileFromPath(filePath) {
+  if (fs.existsSync(filePath)) {
+    currentFile = filePath;
+    const content = fs.readFileSync(filePath, 'utf-8');
+    if (mainWindow && mainWindow.webContents) {
+      mainWindow.webContents.send('file-opened', { path: filePath, content });
+    }
+  }
+}