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>
Release v1.4.0: Advanced Export Options and Batch Conversion
2026-08-02 18:10:18 +05:30 · 2025-09-15 16:36:23 +05:30 · 2025-09-14 22:42:53 +05:30 · 2025-09-01 23:34:38 +05:30 · 2025-09-01 21:41:28 +05:30 · 2025-09-01 21:30:57 +05:30
13 changed files with 2718 additions and 132 deletions
@@ -4,33 +4,34 @@

 **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.

-**Current Version**: v1.2.1  
-**Author**: Amit Haridas (amit.wh@gmail.com)  
-**License**: MIT  
+**Current Version**: v1.5.0
+**Author**: Amit Haridas (amit.wh@gmail.com)
+**License**: MIT
 **Repository**: https://github.com/amitwh/pan-converter

 ## Architecture & Technology Stack

 ### Core Technologies
 - **Electron** - Cross-platform desktop application framework
- **Pandoc** - Universal document converter (required dependency)
+- **Pandoc** - Universal document converter (required system dependency)
 - **marked** - Markdown parsing and rendering
 - **highlight.js** - Syntax highlighting
- **XLSX** - Spreadsheet export functionality
+- **KaTeX** - Mathematical expression rendering
 - **DOMPurify** - HTML sanitization

 ### Application Structure
 ```
 src/
 ├── main.js        # Electron main process, menu system, IPC handlers
-├── renderer.js    # UI logic, editor functionality, event handling
-├── index.html     # Application layout and components
+├── 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
@@ -108,6 +109,113 @@ gh release create v1.2.1 --title "Title" --notes "Release notes" \

 ## 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
@@ -189,19 +297,24 @@ gh release create v1.2.1 --title "Title" --notes "Release notes" \
 ## File Structure & Key Components

 ### Main Process (`src/main.js`)
- **Menu System**: Comprehensive menu with file operations, editing, conversion, view options
+- **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
+- **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`)
 - **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

@@ -214,8 +327,11 @@ gh release create v1.2.1 --title "Title" --notes "Release notes" \

 ### 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
- **Editor Container**: Line numbers and text editor
+- **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

@@ -227,6 +343,9 @@ gh release create v1.2.1 --title "Title" --notes "Release notes" \
 - [ ] 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
@@ -299,5 +418,5 @@ gh release create v1.2.1 --title "Title" --notes "Release notes" \

 ---

-**Last Updated**: September 1, 2025  
-**Claude Assistant**: Development completed for v1.2.1 comprehensive editor enhancements
+**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.
@@ -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.
@@ -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}
@@ -20,11 +20,14 @@ A cross-platform Markdown editor and converter powered by Pandoc.
 - 👁️ **Live Preview** - See your markdown rendered in real-time with synchronized scrolling
 - 🎨 **Multiple Themes** - Choose from Light, Dark, Solarized, Monokai, or GitHub themes
 - 💾 **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 Excel (XLSX/XLS) and OpenDocument Spreadsheet (ODS) formats
+- 📊 **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

@@ -50,9 +53,9 @@ For optimal PDF export, install a LaTeX engine (recommended):
 Download the latest release for your platform from the [Releases](https://github.com/amitwh/pan-converter/releases) page.

 #### Linux
- **AppImage**: `PanConverter-1.3.0.AppImage` (universal, may require `--no-sandbox` flag)
- **Debian Package**: `pan-converter_1.3.0_amd64.deb`
- **Snap Package**: `pan-converter_1.3.0_amd64.snap`
+- **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
@@ -73,7 +76,9 @@ npm start
 ### Export Options
 - **Documents**: HTML, PDF, DOCX, LaTeX, RTF, ODT, EPUB
 - **Presentations**: PowerPoint (PPTX), OpenDocument Presentation (ODP)
- **Spreadsheets**: Excel (XLSX/XLS), OpenDocument Spreadsheet (ODS)
+- **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
@@ -133,6 +138,7 @@ 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
@@ -1,13 +1,14 @@
 {
  "name": "pan-converter",
-  "version": "1.3.0",
+  "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",
@@ -23,6 +24,7 @@
  "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"
@@ -32,8 +34,7 @@
    "dompurify": "^3.2.6",
    "electron-store": "^10.1.0",
    "highlight.js": "^11.11.1",
-    "marked": "^16.2.1",
-    "xlsx": "^0.18.5"
+    "marked": "^16.2.1"
  },
  "build": {
    "appId": "com.panconverter.app",
@@ -47,13 +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": "nsis",
-      "icon": "assets/icon.ico"
+      "target": [
+        {
+          "target": "nsis",
+          "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": [
@@ -113,7 +113,193 @@
                <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 class="tab-content active" id="tab-content-1" data-tab-id="1">
                <div id="editor-pane-1" class="pane">
@@ -2,7 +2,21 @@ const { app, BrowserWindow, Menu, dialog, ipcMain, shell } = require('electron')
 const path = require('path');
 const fs = require('fs');
 const { exec } = require('child_process');
-const XLSX = require('xlsx');
+
+// 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');
@@ -49,12 +63,53 @@ function createWindow() {
    mainWindow = null;
  });

-  // Handle pending file from file association
-  if (app.pendingFile) {
-    mainWindow.webContents.once('dom-ready', () => {
-      openFileFromPath(app.pendingFile);
-      app.pendingFile = 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 [];
  }
 }

@@ -84,6 +139,11 @@ function createMenu() {
          click: saveAsFile
        },
        { type: 'separator' },
+        {
+          label: 'Recent Files',
+          submenu: buildRecentFilesMenu()
+        },
+        { type: 'separator' },
        {
          label: 'Import Document...',
          accelerator: 'CmdOrCtrl+I',
@@ -103,9 +163,7 @@ function createMenu() {
            { label: 'PowerPoint (PPTX)', click: () => exportFile('pptx') },
            { label: 'OpenDocument Presentation (ODP)', click: () => exportFile('odp') },
            { type: 'separator' },
-            { label: 'Excel (XLSX)', click: () => exportSpreadsheet('xlsx') },
-            { label: 'Excel Legacy (XLS)', click: () => exportSpreadsheet('xls') },
-            { label: 'OpenDocument Spreadsheet (ODS)', click: () => exportSpreadsheet('ods') }
+            { label: 'CSV (Tables)', click: () => exportSpreadsheet('csv') }
          ]
        },
        { type: 'separator' },
@@ -153,6 +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' },
@@ -161,6 +240,15 @@ function createMenu() {
        { label: 'Reset Zoom', accelerator: 'CmdOrCtrl+0', role: 'resetZoom' }
      ]
    },
+    {
+      label: 'Batch',
+      submenu: [
+        {
+          label: 'Convert Folder...',
+          click: () => showBatchConversionDialog()
+        }
+      ]
+    },
    {
      label: 'Help',
      submenu: [
@@ -171,7 +259,7 @@ function createMenu() {
              type: 'info',
              title: 'About PanConverter',
              message: 'PanConverter',
-              detail: 'A cross-platform Markdown editor and converter using Pandoc.\n\nVersion: 1.3.0\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• 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 Excel/ODS spreadsheets\n• Document import & conversion\n• Table creation helper\n• Multiple themes support\n• Undo/redo functionality',
+              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']
            });
          }
@@ -225,6 +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: [
@@ -233,37 +334,51 @@ function exportFile(format) {
  });

  if (outputFile) {
-    let 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="${options.csl}"`;
+
    // Add specific options for PDF export to ensure proper generation
    if (format === 'pdf') {
-      pandocCmd = `pandoc "${currentFile}" --pdf-engine=xelatex -V geometry:margin=1in -o "${outputFile}"`;
-      // Try with different PDF engines if xelatex fails
+      const pdfEngine = options.pdfEngine || 'xelatex';
+      const geometry = options.geometry || 'margin=1in';
+      pandocCmd += ` --pdf-engine=${pdfEngine} -V geometry:${geometry}`;
+
+      // Try with specified PDF engine
      exec(pandocCmd, (error, stdout, stderr) => {
        if (error) {
-          // Fallback to pdflatex
-          const fallbackCmd = `pandoc "${currentFile}" --pdf-engine=pdflatex -V geometry:margin=1in -o "${outputFile}"`;
-          exec(fallbackCmd, (fallbackError, fallbackStdout, fallbackStderr) => {
-            if (fallbackError) {
-              // Final fallback to wkhtmltopdf
-              const htmlToPdfCmd = `pandoc "${currentFile}" -t html5 | wkhtmltopdf - "${outputFile}"`;
-              exec(htmlToPdfCmd, (finalError) => {
-                if (finalError) {
-                  dialog.showErrorBox('PDF Export Error', 
-                    `Failed to export PDF. 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` +
-                    `• wkhtmltopdf: sudo apt-get install wkhtmltopdf\n\n` +
-                    `Error: ${finalError.message}`
-                  );
-                } else {
-                  showExportSuccess(outputFile);
-                }
-              });
-            } else {
-              showExportSuccess(outputFile);
-            }
-          });
+          // Try fallback engines if the specified one fails
+          const fallbackEngines = ['pdflatex', 'lualatex'];
+          tryPdfFallback(currentFile, outputFile, fallbackEngines, 0, options, error);
        } else {
          showExportSuccess(outputFile);
        }
@@ -280,6 +395,44 @@ function exportFile(format) {
  }
 }

+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',
@@ -314,7 +467,7 @@ function importDocument() {
    const outputFile = inputFile.replace(/\.[^/.]+$/, '.md');
    
    // Convert to markdown using pandoc
-    const pandocCmd = `pandoc "${inputFile}" -t markdown -o "${outputFile}"`;
+    const pandocCmd = `${getPandocPath()} "${inputFile}" -t markdown -o "${outputFile}"`;
    
    exec(pandocCmd, (error, stdout, stderr) => {
      if (error) {
@@ -366,6 +519,35 @@ 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}`),
@@ -378,27 +560,36 @@ ipcMain.on('export-spreadsheet', (event, { content, format }) => {
    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;
      }

-      // Create workbook
-      const wb = XLSX.utils.book_new();
-      
+      // Convert tables to CSV format
+      let csvContent = '';
      tables.forEach((table, index) => {
-        const ws = XLSX.utils.aoa_to_sheet(table);
-        XLSX.utils.book_append_sheet(wb, ws, `Table ${index + 1}`);
+        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 file
-      XLSX.writeFile(wb, outputFile);
-      
+      // Write CSV file
+      fs.writeFileSync(outputFile, csvContent, 'utf-8');
+
      dialog.showMessageBox(mainWindow, {
        type: 'info',
        title: 'Export Complete',
-        message: `Spreadsheet exported successfully to ${outputFile}`,
+        message: `CSV exported successfully to ${outputFile}`,
        buttons: ['OK']
      });
    } catch (error) {
@@ -449,14 +640,150 @@ function extractTablesFromMarkdown(markdown) {
  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
-  if (process.argv.length > 1) {
-    const filePath = process.argv.find(arg => arg.endsWith('.md') || arg.endsWith('.markdown'));
-    if (filePath && fs.existsSync(filePath)) {
-      openFileFromPath(filePath);
+  // 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;
    }
  }
 });
@@ -473,6 +800,30 @@ app.on('activate', () => {
  }
 });

+// 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();
@@ -25,6 +25,9 @@ class TabManager {
        this.nextTabId = 2;
        this.isPreviewVisible = true;
        this.showLineNumbers = false;
+        this.autoSaveInterval = null;
+        this.autoSaveDelay = 30000; // 30 seconds
+        this.recentFiles = JSON.parse(localStorage.getItem('recentFiles') || '[]');
        
        // Initialize first tab
        this.tabs.set(1, {
@@ -112,6 +115,7 @@ class TabManager {
        this.tabs.set(newTabId, tab);
        this.createTabElements(tab);
        this.switchToTab(newTabId);
+        this.startAutoSave();
        this.updateTabBar();
    }
    
@@ -284,6 +288,22 @@ class TabManager {
            const html = marked.parse(tab.content);
            const sanitizedHtml = DOMPurify.sanitize(html);
            preview.innerHTML = sanitizedHtml;
+
+            // Render math expressions if KaTeX is available
+            if (window.katex && window.renderMathInElement) {
+                try {
+                    window.renderMathInElement(preview, {
+                        delimiters: [
+                            {left: '$$', right: '$$', display: true},
+                            {left: '$', right: '$', display: false},
+                            {left: '\\[', right: '\\]', display: true},
+                            {left: '\\(', right: '\\)', display: false}
+                        ]
+                    });
+                } catch (mathError) {
+                    console.warn('Math rendering error:', mathError);
+                }
+            }
        } catch (error) {
            preview.innerHTML = '<p>Error rendering preview</p>';
        }
@@ -324,10 +344,33 @@ class TabManager {
    updateWordCount() {
        const tab = this.tabs.get(this.activeTabId);
        if (!tab) return;
-        
-        const words = tab.content.trim().split(/\\s+/).filter(word => word.length > 0).length;
-        const chars = tab.content.length;
-        document.getElementById('word-count').textContent = `Words: ${words} | Characters: ${chars}`;
+
+        const content = tab.content;
+        const words = content.trim() ? content.trim().split(/\s+/).filter(word => word.length > 0).length : 0;
+        const chars = content.length;
+        const charsNoSpaces = content.replace(/\s/g, '').length;
+
+        // Enhanced statistics
+        const lines = content.split('\n').length;
+        const paragraphs = content.split(/\n\s*\n/).filter(p => p.trim()).length;
+        const readingTime = Math.ceil(words / 200); // Average reading speed: 200 words/minute
+        const sentences = content.split(/[.!?]+/).filter(s => s.trim()).length;
+
+        // Update the word count display with enhanced stats
+        const basicStats = `Words: ${words} | Characters: ${chars} (${charsNoSpaces} no spaces)`;
+        const enhancedStats = `Lines: ${lines} | Paragraphs: ${paragraphs} | Sentences: ${sentences} | Reading time: ${readingTime} min`;
+
+        document.getElementById('word-count').textContent = basicStats;
+
+        // Add enhanced stats to a separate element
+        let enhancedEl = document.getElementById('enhanced-stats');
+        if (!enhancedEl) {
+            enhancedEl = document.createElement('div');
+            enhancedEl.id = 'enhanced-stats';
+            enhancedEl.className = 'enhanced-stats';
+            document.querySelector('.status-bar').appendChild(enhancedEl);
+        }
+        enhancedEl.textContent = enhancedStats;
    }
    
    setupEditorEvents() {
@@ -408,7 +451,84 @@ class TabManager {
            this.updateWordCount();
        }
    }
-    
+
+    // Auto-save functionality
+    startAutoSave() {
+        if (this.autoSaveInterval) {
+            clearInterval(this.autoSaveInterval);
+        }
+
+        this.autoSaveInterval = setInterval(() => {
+            this.performAutoSave();
+        }, this.autoSaveDelay);
+    }
+
+    stopAutoSave() {
+        if (this.autoSaveInterval) {
+            clearInterval(this.autoSaveInterval);
+            this.autoSaveInterval = null;
+        }
+    }
+
+    performAutoSave() {
+        const tab = this.tabs.get(this.activeTabId);
+        if (!tab || !tab.filePath || !tab.content) return;
+
+        // Only auto-save if content has changed since last save
+        if (tab.lastSavedContent !== tab.content) {
+            ipcRenderer.send('save-file', { path: tab.filePath, content: tab.content });
+            tab.lastSavedContent = tab.content;
+
+            // Show brief auto-save indicator
+            this.showAutoSaveIndicator();
+        }
+    }
+
+    showAutoSaveIndicator() {
+        const indicator = document.createElement('div');
+        indicator.textContent = 'Auto-saved';
+        indicator.className = 'auto-save-indicator';
+        document.body.appendChild(indicator);
+
+        setTimeout(() => {
+            indicator.classList.add('fade-out');
+            setTimeout(() => {
+                if (indicator.parentNode) {
+                    indicator.parentNode.removeChild(indicator);
+                }
+            }, 300);
+        }, 1500);
+    }
+
+    // Recent files functionality
+    addToRecentFiles(filePath) {
+        if (!filePath) return;
+
+        // Remove if already exists
+        this.recentFiles = this.recentFiles.filter(f => f !== filePath);
+
+        // Add to beginning
+        this.recentFiles.unshift(filePath);
+
+        // Keep only last 10 files
+        this.recentFiles = this.recentFiles.slice(0, 10);
+
+        // Save to localStorage and sync with main process
+        localStorage.setItem('recentFiles', JSON.stringify(this.recentFiles));
+        window.electronAPI.send('save-recent-files', this.recentFiles);
+    }
+
+    getRecentFiles() {
+        return this.recentFiles.filter(file => {
+            // Check if file still exists (basic check by trying to access it)
+            try {
+                return file && file.length > 0;
+            } catch (e) {
+                return false;
+            }
+        });
+    }
+
    setupToolbarEvents() {
        // Existing toolbar setup...
        document.getElementById('btn-preview-toggle').addEventListener('click', () => {
@@ -459,6 +579,8 @@ class TabManager {
        }
        
        this.restoreTabState(this.activeTabId);
+        this.startAutoSave();
+        this.addToRecentFiles(filePath);
        this.updateTabBar();
    }
    
@@ -478,9 +600,12 @@ let tabManager;

 document.addEventListener('DOMContentLoaded', () => {
    tabManager = new TabManager();
-    
+
    // Request current theme
    ipcRenderer.send('get-theme');
+
+    // Signal that renderer is ready for file operations
+    ipcRenderer.send('renderer-ready');
    
    // Set up auto-save interval
    setInterval(() => {
@@ -537,4 +662,485 @@ ipcRenderer.on('toggle-find', () => {

 ipcRenderer.on('theme-changed', (event, theme) => {
    document.body.className = `theme-${theme}`;
-});
+});
+
+// Font size adjustment
+let currentFontSize = parseInt(localStorage.getItem('fontSize')) || 15;
+
+function updateFontSizes(size) {
+    const editors = document.querySelectorAll('#editor, .editor-textarea');
+    const previews = document.querySelectorAll('#preview, .preview-content');
+    
+    editors.forEach(editor => {
+        editor.style.fontSize = `${size}px`;
+    });
+    
+    previews.forEach(preview => {
+        preview.style.fontSize = `${size}px`;
+    });
+    
+    localStorage.setItem('fontSize', size);
+}
+
+// Apply saved font size on load
+updateFontSizes(currentFontSize);
+
+ipcRenderer.on('adjust-font-size', (event, action) => {
+    if (action === 'increase' && currentFontSize < 24) {
+        currentFontSize++;
+    } else if (action === 'decrease' && currentFontSize > 10) {
+        currentFontSize--;
+    } else if (action === 'reset') {
+        currentFontSize = 15;
+    }
+    updateFontSizes(currentFontSize);
+});
+
+// Export Dialog functionality
+let currentExportFormat = null;
+
+ipcRenderer.on('show-export-dialog', (event, format) => {
+    currentExportFormat = format;
+    showExportDialog(format);
+});
+
+function showExportDialog(format) {
+    const dialog = document.getElementById('export-dialog');
+    const title = document.getElementById('export-dialog-title');
+
+    title.textContent = `Export as ${format.toUpperCase()}`;
+    dialog.setAttribute('data-format', format);
+    dialog.classList.remove('hidden');
+
+    // Initialize form values
+    initializeExportForm(format);
+}
+
+function hideExportDialog() {
+    const dialog = document.getElementById('export-dialog');
+    dialog.classList.add('hidden');
+    currentExportFormat = null;
+}
+
+function initializeExportForm(format) {
+    // Reset advanced export toggle to unchecked
+    const advancedToggle = document.getElementById('advanced-export-toggle');
+    const advancedOptions = document.getElementById('advanced-export-options');
+
+    advancedToggle.checked = false;
+    advancedOptions.classList.add('hidden');
+
+    // Reset form to defaults
+    document.getElementById('export-template').value = 'default';
+    document.getElementById('custom-template-path').style.display = 'none';
+
+    // Clear metadata fields
+    const metadataFields = document.querySelectorAll('.metadata-field');
+    metadataFields.forEach((field, index) => {
+        if (index < 4) { // Keep first 4 default fields
+            field.querySelector('.metadata-key').value = ['title', 'author', 'date', 'subject'][index] || '';
+            field.querySelector('.metadata-value').value = '';
+        } else {
+            field.remove(); // Remove additional fields
+        }
+    });
+
+    // Reset checkboxes and other fields
+    document.getElementById('export-toc').checked = false;
+    document.getElementById('export-number-sections').checked = false;
+    document.getElementById('export-citeproc').checked = false;
+    document.getElementById('export-toc-depth').value = 3;
+
+    // PDF-specific fields
+    if (format === 'pdf') {
+        document.getElementById('pdf-engine').value = 'xelatex';
+        document.getElementById('pdf-geometry').value = 'margin=1in';
+        document.getElementById('custom-geometry').style.display = 'none';
+    }
+
+    // Clear bibliography fields
+    document.getElementById('bibliography-file').value = '';
+    document.getElementById('csl-file').value = '';
+}
+
+function collectExportOptions() {
+    const advancedMode = document.getElementById('advanced-export-toggle').checked;
+    const options = {};
+
+    if (advancedMode) {
+        // Collect advanced options
+        options.template = document.getElementById('export-template').value;
+        options.metadata = {};
+        options.variables = {};
+        options.toc = document.getElementById('export-toc').checked;
+        options.tocDepth = document.getElementById('export-toc-depth').value;
+        options.numberSections = document.getElementById('export-number-sections').checked;
+        options.citeproc = document.getElementById('export-citeproc').checked;
+    } else {
+        // Collect basic options only
+        options.template = 'default';
+        options.metadata = {};
+        options.variables = {};
+        options.toc = document.getElementById('basic-toc').checked;
+        options.tocDepth = 3;
+        options.numberSections = document.getElementById('basic-number-sections').checked;
+        options.citeproc = false;
+    }
+
+    if (advancedMode) {
+        // Collect custom template path
+        if (options.template === 'custom') {
+            options.template = document.getElementById('custom-template-path').value.trim();
+        }
+
+        // Collect metadata
+        const metadataFields = document.querySelectorAll('.metadata-field');
+        metadataFields.forEach(field => {
+            const key = field.querySelector('.metadata-key').value.trim();
+            const value = field.querySelector('.metadata-value').value.trim();
+            if (key && value) {
+                options.metadata[key] = value;
+            }
+        });
+
+        // PDF-specific options
+        if (currentExportFormat === 'pdf') {
+            options.pdfEngine = document.getElementById('pdf-engine').value;
+            const geometrySelect = document.getElementById('pdf-geometry');
+            if (geometrySelect.value === 'custom') {
+                options.geometry = document.getElementById('custom-geometry').value.trim() || 'margin=1in';
+            } else {
+                options.geometry = geometrySelect.value;
+            }
+        }
+
+        // Bibliography
+        const bibFile = document.getElementById('bibliography-file').value.trim();
+        const cslFile = document.getElementById('csl-file').value.trim();
+        if (bibFile) options.bibliography = bibFile;
+        if (cslFile) options.csl = cslFile;
+    } else {
+        // Basic mode - set default PDF options if needed
+        if (currentExportFormat === 'pdf') {
+            options.pdfEngine = 'xelatex';
+            options.geometry = 'margin=1in';
+        }
+    }
+
+    return options;
+}
+
+// Event listeners for export dialog
+document.addEventListener('DOMContentLoaded', () => {
+    // Template selection
+    document.getElementById('export-template').addEventListener('change', (e) => {
+        const customPath = document.getElementById('custom-template-path');
+        const fileInput = document.getElementById('template-file-input');
+
+        if (e.target.value === 'custom') {
+            customPath.style.display = 'block';
+            fileInput.style.display = 'block';
+        } else {
+            customPath.style.display = 'none';
+            fileInput.style.display = 'none';
+            customPath.value = '';
+        }
+    });
+
+    // Advanced export toggle
+    document.getElementById('advanced-export-toggle').addEventListener('change', (e) => {
+        const advancedOptions = document.getElementById('advanced-export-options');
+        if (e.target.checked) {
+            advancedOptions.classList.remove('hidden');
+        } else {
+            advancedOptions.classList.add('hidden');
+        }
+    });
+
+    // Template file input
+    document.getElementById('template-file-input').addEventListener('change', (e) => {
+        const file = e.target.files[0];
+        if (file) {
+            document.getElementById('custom-template-path').value = file.path;
+        }
+    });
+
+    // PDF geometry selection
+    document.getElementById('pdf-geometry').addEventListener('change', (e) => {
+        const customGeometry = document.getElementById('custom-geometry');
+        if (e.target.value === 'custom') {
+            customGeometry.style.display = 'block';
+        } else {
+            customGeometry.style.display = 'none';
+        }
+    });
+
+    // Add metadata field
+    document.getElementById('add-metadata-field').addEventListener('click', () => {
+        const container = document.querySelector('.metadata-container');
+        const newField = document.createElement('div');
+        newField.className = 'metadata-field';
+        newField.innerHTML = `
+            <input type="text" placeholder="key" class="metadata-key">
+            <input type="text" placeholder="value" class="metadata-value">
+        `;
+        container.appendChild(newField);
+    });
+
+    // Browse bibliography
+    document.getElementById('browse-bibliography').addEventListener('click', () => {
+        const input = document.createElement('input');
+        input.type = 'file';
+        input.accept = '.bib,.yaml,.yml,.json';
+        input.onchange = (e) => {
+            const file = e.target.files[0];
+            if (file) {
+                document.getElementById('bibliography-file').value = file.path;
+            }
+        };
+        input.click();
+    });
+
+    // Browse CSL
+    document.getElementById('browse-csl').addEventListener('click', () => {
+        const input = document.createElement('input');
+        input.type = 'file';
+        input.accept = '.csl';
+        input.onchange = (e) => {
+            const file = e.target.files[0];
+            if (file) {
+                document.getElementById('csl-file').value = file.path;
+            }
+        };
+        input.click();
+    });
+
+    // Dialog close buttons
+    document.getElementById('export-dialog-close').addEventListener('click', hideExportDialog);
+    document.getElementById('export-cancel').addEventListener('click', hideExportDialog);
+
+    // Export confirm
+    document.getElementById('export-confirm').addEventListener('click', () => {
+        const options = collectExportOptions();
+        ipcRenderer.send('export-with-options', {
+            format: currentExportFormat,
+            options: options
+        });
+        hideExportDialog();
+    });
+
+    // Close on backdrop click
+    document.getElementById('export-dialog').addEventListener('click', (e) => {
+        if (e.target === document.getElementById('export-dialog')) {
+            hideExportDialog();
+        }
+    });
+
+    // Close on Escape key
+    document.addEventListener('keydown', (e) => {
+        if (e.key === 'Escape' && !document.getElementById('export-dialog').classList.contains('hidden')) {
+            hideExportDialog();
+        }
+    });
+});
+
+// Batch Conversion Dialog functionality
+let currentBatchOptions = {};
+
+ipcRenderer.on('show-batch-dialog', () => {
+    showBatchDialog();
+});
+
+ipcRenderer.on('batch-progress', (event, progress) => {
+    updateBatchProgress(progress);
+});
+
+ipcRenderer.on('folder-selected', (event, { type, path }) => {
+    if (type === 'input') {
+        document.getElementById('batch-input-folder').value = path;
+    } else if (type === 'output') {
+        document.getElementById('batch-output-folder').value = path;
+    }
+    validateBatchForm();
+});
+
+function showBatchDialog() {
+    const dialog = document.getElementById('batch-dialog');
+    dialog.classList.remove('hidden');
+
+    // Reset form
+    document.getElementById('batch-input-folder').value = '';
+    document.getElementById('batch-output-folder').value = '';
+    document.getElementById('batch-format').value = 'html';
+    document.getElementById('batch-include-subfolders').checked = true;
+    document.getElementById('batch-progress').classList.add('hidden');
+    document.getElementById('batch-start').disabled = true;
+
+    currentBatchOptions = {
+        template: 'default',
+        metadata: {},
+        variables: {},
+        toc: false,
+        tocDepth: 3,
+        numberSections: false,
+        citeproc: false
+    };
+}
+
+function hideBatchDialog() {
+    const dialog = document.getElementById('batch-dialog');
+    dialog.classList.add('hidden');
+}
+
+function updateBatchProgress(progress) {
+    const progressSection = document.getElementById('batch-progress');
+    const progressFill = document.getElementById('batch-progress-fill');
+    const progressText = document.getElementById('batch-progress-text');
+    const progressCount = document.getElementById('batch-progress-count');
+
+    progressSection.classList.remove('hidden');
+
+    const percentage = Math.round((progress.completed / progress.total) * 100);
+    progressFill.style.width = `${percentage}%`;
+
+    if (progress.completed === progress.total) {
+        progressText.textContent = 'Conversion complete!';
+    } else {
+        progressText.textContent = `Processing: ${progress.currentFile}`;
+    }
+
+    progressCount.textContent = `${progress.completed} / ${progress.total}`;
+}
+
+function validateBatchForm() {
+    const inputFolder = document.getElementById('batch-input-folder').value.trim();
+    const outputFolder = document.getElementById('batch-output-folder').value.trim();
+    const startButton = document.getElementById('batch-start');
+
+    startButton.disabled = !inputFolder || !outputFolder;
+}
+
+// Event listeners for batch dialog
+document.addEventListener('DOMContentLoaded', () => {
+    // Browse input folder
+    document.getElementById('browse-input-folder').addEventListener('click', () => {
+        ipcRenderer.send('select-folder', 'input');
+    });
+
+    // Browse output folder
+    document.getElementById('browse-output-folder').addEventListener('click', () => {
+        ipcRenderer.send('select-folder', 'output');
+    });
+
+    // Show advanced options
+    document.getElementById('batch-show-options').addEventListener('click', () => {
+        const format = document.getElementById('batch-format').value;
+        currentExportFormat = format;
+        showExportDialog(format);
+    });
+
+    // Dialog close buttons
+    document.getElementById('batch-dialog-close').addEventListener('click', hideBatchDialog);
+    document.getElementById('batch-cancel').addEventListener('click', hideBatchDialog);
+
+    // Start batch conversion
+    document.getElementById('batch-start').addEventListener('click', () => {
+        const inputFolder = document.getElementById('batch-input-folder').value.trim();
+        const outputFolder = document.getElementById('batch-output-folder').value.trim();
+        const format = document.getElementById('batch-format').value;
+
+        if (!inputFolder || !outputFolder) {
+            return;
+        }
+
+        // Use current export options from advanced dialog if they were set
+        const options = currentBatchOptions;
+
+        // Start batch conversion
+        ipcRenderer.send('batch-convert', {
+            inputFolder,
+            outputFolder,
+            format,
+            options
+        });
+
+        // Show progress
+        document.getElementById('batch-progress').classList.remove('hidden');
+        document.getElementById('batch-start').disabled = true;
+    });
+
+    // Close on backdrop click
+    document.getElementById('batch-dialog').addEventListener('click', (e) => {
+        if (e.target === document.getElementById('batch-dialog')) {
+            hideBatchDialog();
+        }
+    });
+
+    // Close on Escape key (modified to handle both dialogs)
+    document.addEventListener('keydown', (e) => {
+        if (e.key === 'Escape') {
+            if (!document.getElementById('export-dialog').classList.contains('hidden')) {
+                hideExportDialog();
+            } else if (!document.getElementById('batch-dialog').classList.contains('hidden')) {
+                hideBatchDialog();
+            }
+        }
+    });
+
+    // Input validation
+    document.getElementById('batch-input-folder').addEventListener('input', validateBatchForm);
+    document.getElementById('batch-output-folder').addEventListener('input', validateBatchForm);
+});
+
+// Override the export dialog confirm to also save batch options
+const originalExportConfirm = document.getElementById('export-confirm');
+if (originalExportConfirm) {
+    originalExportConfirm.addEventListener('click', () => {
+        // If batch dialog is open, save options for batch conversion
+        if (!document.getElementById('batch-dialog').classList.contains('hidden')) {
+            currentBatchOptions = collectExportOptions();
+        }
+    });
+}
+
+// IPC event listeners for recent files functionality
+if (window.electronAPI) {
+    window.electronAPI.on('recent-files-cleared', () => {
+        tabManager.recentFiles = [];
+        localStorage.setItem('recentFiles', JSON.stringify([]));
+        console.log('Recent files cleared');
+    });
+}
+
+// Add math rendering support using KaTeX for enhanced preview
+function initMathSupport() {
+    // Add KaTeX CSS
+    const katexCSS = document.createElement('link');
+    katexCSS.rel = 'stylesheet';
+    katexCSS.href = 'https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.min.css';
+    katexCSS.crossOrigin = 'anonymous';
+    document.head.appendChild(katexCSS);
+
+    // Add KaTeX JS
+    const katexJS = document.createElement('script');
+    katexJS.src = 'https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.min.js';
+    katexJS.crossOrigin = 'anonymous';
+    katexJS.onload = () => {
+        // Add auto-render extension
+        const autoRenderJS = document.createElement('script');
+        autoRenderJS.src = 'https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/contrib/auto-render.min.js';
+        autoRenderJS.crossOrigin = 'anonymous';
+        autoRenderJS.onload = () => {
+            console.log('Math support (KaTeX) initialized');
+            // Re-render current preview to include math
+            if (tabManager) {
+                tabManager.updatePreview();
+            }
+        };
+        document.head.appendChild(autoRenderJS);
+    };
+    document.head.appendChild(katexJS);
+}
+
+// Initialize math support on load
+initMathSupport();
Author	SHA1	Message	Date
amitwhandClaude	f50ffe8ed2	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>	2025-09-15 16:36:23 +05:30
amitwhandClaude	5376bddc59	Release v1.4.0: Advanced Export Options and Batch Conversion Major Features: • Fixed file association loading issue with proper timing • Advanced export options dialog with templates and metadata support • Batch file conversion system with progress tracking • Enhanced UI with professional modal dialogs Technical Improvements: • Fixed renderer initialization timing for file association • Added comprehensive Pandoc options support (templates, metadata, variables) • Implemented recursive folder processing for batch operations • Enhanced error handling and user feedback systems • Theme-aware styling for all new components 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>	2025-09-14 22:42:53 +05:30
amitwhandClaude	d3b67b1388	Bump version to v1.3.7 - Updated package.json version to 1.3.7 - Updated version in About dialog to 1.3.7 - Prepared for new release with Linux packages 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>	2025-09-01 23:34:38 +05:30
amitwhandClaude	aac496923e	Add font size adjustment menu and fix theme styling Features: • Added Font Size menu in View with increase/decrease/reset options • Keyboard shortcuts: Ctrl+Shift+Plus/Minus/0 for font adjustment • Font size persists between sessions using localStorage • Font sizes adjustable from 10px to 24px Theme Fixes: • Fixed missing Monokai theme styles for tabs and editor • Added complete tab styling for Solarized theme • Added complete tab styling for GitHub theme • All themes now have consistent tab bar appearance Other Changes: • Updated CLAUDE.md with v1.3.x features documentation • Version bumped to 1.3.4 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>	2025-09-01 21:41:28 +05:30
amitwhandClaude	256f944b88	Increase editor and preview font sizes to 15px Enhanced font sizes for improved readability: • Editor font size increased from 14px to 15px • Preview font size set to 15px for both #preview and .preview-content • Better visual experience across all themes and content types 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>	2025-09-01 21:30:57 +05:30
amitwh	dbe57d2fad	Fix v1.3.2: Restore proper preview text spacing and typography - Restored ideal preview text spacing from earlier versions - Extended all preview styles to work with new .preview-content class - Added proper margins, padding, and line-height for readability - Updated theme support for all preview elements across all themes - Improved typography with balanced font size and spacing - Fixed double padding issue with better container structure - Enhanced readability with proper heading margins and paragraph spacing - Updated to version 1.3.2 with improved preview typography	2025-09-01 21:24:40 +05:30
amitwh	9a45849003	Update README.md for v1.3.1 release	2025-09-01 21:08:29 +05:30
amitwh	dfb603c2ea	Fix v1.3.1: File associations and 50/50 pane layout - Enhanced file association handling for double-clicking .md files - Added proper file associations in package.json build config - Fixed preview/source pane layout to be equally distributed 50/50 - Updated CSS for tab-content structure with proper flex layout - Added theme support for new pane selectors - Improved command line argument processing for file opening - Updated version to 1.3.1 with file association feature	2025-09-01 21:05:01 +05:30
amitwh	fda173d9a1	Merge branch 'master' into macos	2025-09-01 20:58:00 +05:30
amitwh	5cbcfa466d	Merge branch 'master' into macos	2025-09-01 20:53:29 +05:30
amitwh	edb163eab4	Merge master with comprehensive v1.2.0 editor enhancements	2025-09-01 20:29:13 +05:30
amitwh	7b5165bcb1	Update README.md with v1.2.0 features and remove CLAUDE.md	2025-09-01 20:07:13 +05:30
amitwh	bd38c5342d	Update About dialog to version 1.2.0 with new features list	2025-09-01 20:03:08 +05:30