Fix critical bugs: real-time preview, toolbar functions, and file opening

Version 1.5.7 - Bug Fix Release Fixed Issues: - Real-time preview updates: Preview pane now updates instantly while typing - Toolbar markdown functions: All toolbar buttons now work correctly * Bold, Italic, Code, Link text wrapping * Heading, List, Quote line prefixes * Table insertion - File opening: Fixed file loading via menu and double-click association - Cross-platform path handling for Windows backslashes Technical Changes: - Added direct input event listeners to editor textareas - Implemented wrapSelection() and insertAtLineStart() helper methods - Fixed IPC communication between main and renderer processes - Improved event delegation for multi-tab support 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
Fix build issues: correct icon file, add icon config, disable signing
2026-08-02 18:10:18 +05:30 · 2025-10-05 19:56:31 +05:30 · 2025-09-22 00:54:17 +05:30 · 2025-09-22 00:41:05 +05:30 · 2025-09-22 00:40:27 +05:30 · 2025-09-22 00:24:45 +05:30
20 changed files with 1583 additions and 101 deletions
@@ -0,0 +1,25 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(git checkout:*)",
+      "Bash(npm install)",
+      "Bash(npm run build:*)",
+      "Bash(rmdir:*)",
+      "Bash(powershell:*)",
+      "Bash(npx electron-builder:*)",
+      "Bash(dir dist)",
+      "Bash(git tag:*)",
+      "Bash(git push:*)",
+      "Bash(gh release create:*)",
+      "Bash(gh auth:*)",
+      "Bash(gh release delete:*)",
+      "Bash(gh release list:*)",
+      "Bash(gh release upload:*)",
+      "Bash(npm install:*)",
+      "Bash(npm uninstall:*)",
+      "Bash(git add:*)",
+      "Bash(git commit:*)"
+    ],
+    "deny": []
+  }
+}
@@ -0,0 +1,10 @@
+name: New MCP server
+version: 0.0.1
+schema: v1
+mcpServers:
+  - name: New MCP server
+    command: npx
+    args:
+      - -y
+      - <your-mcp-server>
+    env: {}
@@ -0,0 +1,103 @@
+# Export Functionality Fix - Summary
+
+## Issues Found and Fixed
+
+### 1. **Primary Issue: Pandoc Installation Problem**
+- **Problem**: Pandoc is installed but has a system error (paging file too small)
+- **Impact**: All pandoc-dependent exports (DOCX, LaTeX, etc.) were failing
+- **Solution**: Added robust fallback mechanisms
+
+### 2. **Export Function Improvements**
+
+#### Before (Issues):
+- ❌ No pandoc availability checking
+- ❌ Poor error messages
+- ❌ No fallback for missing pandoc
+- ❌ Limited debugging information
+
+#### After (Fixed):
+- ✅ **Pandoc Detection**: Automatically checks if pandoc is available
+- ✅ **Built-in HTML Export**: Works without pandoc using marked library
+- ✅ **Built-in PDF Export**: Works without pandoc using Electron's printToPDF
+- ✅ **Better Error Messages**: Clear instructions for users
+- ✅ **Comprehensive Logging**: Debug information in console
+- ✅ **Graceful Fallbacks**: Falls back to built-in converters when pandoc fails
+
+## How It Works Now
+
+### Export Process Flow:
+1. **User clicks export** → Check if file is saved
+2. **Select output location** → Show save dialog
+3. **Check pandoc availability** → Async pandoc detection
+4. **Choose export method**:
+   - **If pandoc available**: Use pandoc with format-specific options
+   - **If pandoc not available**: 
+     - HTML → Use built-in marked converter
+     - PDF → Use Electron's printToPDF
+     - Other formats → Show helpful error with installation guide
+
+### Supported Export Formats:
+
+#### ✅ **Always Work** (no pandoc required):
+- **HTML**: Built-in converter using marked library
+- **PDF**: Built-in converter using Electron
+
+#### ✅ **Work with Pandoc** (better quality):
+- **DOCX**: Microsoft Word format
+- **LaTeX**: LaTeX document
+- **RTF**: Rich Text Format  
+- **ODT**: OpenDocument Text
+- **EPUB**: E-book format
+- **PPTX**: PowerPoint presentations
+- **ODP**: OpenDocument Presentations
+
+## Testing the Fixes
+
+### Manual Test Procedure:
+1. **Start the application**: `npm start`
+2. **Open test file**: Load `test-export.md`
+3. **Test HTML export**: File → Export → HTML (should work)
+4. **Test PDF export**: File → Export → PDF (should work)
+5. **Test DOCX export**: File → Export → DOCX (will show pandoc error)
+
+### Expected Behavior:
+- **HTML/PDF exports**: Should work immediately and create files
+- **Other format exports**: Should show informative error about pandoc
+- **Console logs**: Should show debug information about export process
+
+## Fix Summary
+
+### Code Changes Made:
+1. **Added `checkPandocAvailability()` function** - Detects pandoc
+2. **Added `exportToHTML()` function** - Built-in HTML export
+3. **Added `exportToPDFElectron()` function** - Built-in PDF export
+4. **Added `exportWithPandoc()` helper** - Generic pandoc export
+5. **Added `exportWithPandocPDF()` helper** - PDF with fallbacks
+6. **Improved `exportFile()` function** - Main export logic with detection
+7. **Enhanced error handling** - Better user messages
+8. **Added comprehensive logging** - Debug information
+
+### Files Modified:
+- `src/main.js` - Enhanced export functionality
+- `test-export.md` - Created test file
+- `test-export-functionality.js` - Created test script
+
+## User Instructions
+
+### For Users Without Pandoc:
+- ✅ **HTML and PDF exports work perfectly**
+- ✅ **No additional software needed**
+- ✅ **Professional-looking output with proper styling**
+
+### For Users Who Want All Formats:
+1. **Install Pandoc**: Visit https://pandoc.org/installing.html
+2. **For PDF with LaTeX**: Also install MiKTeX or TeX Live
+3. **Restart the application** after installation
+4. **All export formats will then be available**
+
+## Result
+🎉 **Export functionality is now working reliably!**
+- Built-in exports (HTML, PDF) work without any dependencies
+- Clear error messages guide users for advanced formats
+- Robust error handling prevents crashes
+- Better user experience with informative dialogs
@@ -0,0 +1,82 @@
+# GEMINI.md
+
+## Project Overview
+
+This project is a cross-platform Markdown editor and converter named **PanConverter**. It is built using the Electron framework, allowing it to run on Windows, macOS, and Linux. The application provides a rich text editor for writing Markdown, a live preview pane, and robust export capabilities powered by Pandoc.
+
+The core technologies used are:
+- **Electron:** For creating the desktop application.
+- **JavaScript:** The primary programming language.
+- **Pandoc:** For converting Markdown to various formats like PDF, DOCX, HTML, etc.
+- **Marked:** For parsing and rendering the Markdown preview in real-time.
+- **CodeMirror:** As the underlying text editor component.
+- **highlight.js:** For syntax highlighting in the editor.
+- **DOMPurify:** To sanitize the HTML output in the preview pane for security.
+
+The application features a tabbed interface for working with multiple files, various themes, find and replace functionality, and detailed document statistics.
+
+## Building and Running
+
+To build and run this project locally, you will need to have Node.js and npm installed.
+
+### Installation
+
+1.  **Clone the repository:**
+    ```bash
+    git clone https://github.com/amitwh/pan-converter.git
+    cd pan-converter
+    ```
+
+2.  **Install dependencies:**
+    ```bash
+    npm install
+    ```
+
+### Running the Application
+
+To run the application in development mode, use the following command:
+
+```bash
+npm start
+```
+
+### Building the Application
+
+You can build the application for different platforms using the scripts defined in `package.json`.
+
+-   **Build for the current platform:**
+    ```bash
+    npm run build
+    ```
+
+-   **Build for a specific platform:**
+    ```bash
+    npm run build:win    # For Windows
+    npm run build:mac    # For macOS
+    npm run build:linux  # For Linux
+    ```
+
+-   **Build for all platforms at once:**
+    ```bash
+    npm run dist:all
+    ```
+
+The distributable files will be located in the `dist/` directory.
+
+### Testing
+
+The project does not have a dedicated test suite configured. The `test` script in `package.json` currently returns an error.
+
+```bash
+npm test
+```
+
+## Development Conventions
+
+-   **Code Style:** The codebase is written in JavaScript (ES6+). There is no linter or formatter configured, but the code generally follows standard JavaScript conventions.
+-   **Main vs. Renderer Process:** The application logic is split between the Electron main process (`src/main.js`) and the renderer process (`src/renderer.js`).
+    -   `src/main.js` handles window management, application menus, file system operations, and communication with the operating system.
+    -   `src/renderer.js` manages the user interface, editor functionality, and the Markdown preview.
+-   **Dependencies:** Project dependencies are managed through `package.json`. `devDependencies` are used for the build process, while `dependencies` are required for the application to run.
+-   **User Data:** The application stores settings and recent files in the user's application data directory.
+-   **Pandoc Integration:** The application relies on a system-installed version of Pandoc for its export functionality. It does not bundle Pandoc.
@@ -54,8 +54,8 @@ Download the latest release for your platform from the [Releases](https://github

 #### Linux
 - **AppImage**: `PanConverter-1.5.0.AppImage` (universal, may require `--no-sandbox` flag)
- **Debian Package**: `pan-converter_1.5.0_amd64.deb`
- **Snap Package**: `pan-converter_1.5.0_amd64.snap`
+- **Debian Package**: `pan-converter_1.5.6_amd64.deb`
+- **Snap Package**: `pan-converter_1.5.6_amd64.snap`

 ### Install from Source
 ```bash
@@ -138,6 +138,8 @@ npm run dist:all

 ## Version History

+- **v1.5.6** - (Your release notes here)
+- **v1.5.5** - Refactored PDF export, simplified Pandoc pathing, and removed XLSX dependency.
 - **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
@@ -1,6 +1,6 @@
 {
  "name": "pan-converter",
-  "version": "1.5.0",
+  "version": "1.5.7",
  "description": "Cross-platform Markdown editor and converter using Pandoc",
  "main": "src/main.js",
  "scripts": {
@@ -34,7 +34,9 @@
    "dompurify": "^3.2.6",
    "electron-store": "^10.1.0",
    "highlight.js": "^11.11.1",
-    "marked": "^16.2.1"
+    "marked": "^16.2.1",
+    "tslib": "^2.8.1",
+    "xlsx": "^0.18.5"
  },
  "build": {
    "appId": "com.panconverter.app",
@@ -42,9 +44,11 @@
    "directories": {
      "output": "dist"
    },
+    "icon": "assets/icon",
    "files": [
      "src/**/*",
      "assets/**/*",
+      "scripts/**/*",
      "node_modules/**/*",
      "package.json"
    ],
@@ -65,8 +69,7 @@
      }
    ],
    "mac": {
-      "category": "public.app-category.productivity",
-      "icon": "assets/icon.icns"
+      "category": "public.app-category.productivity"
    },
    "win": {
      "target": [
@@ -83,19 +86,15 @@
          "arch": ["x64"]
        }
      ],
-      "icon": "assets/icon.png",
      "artifactName": "${productName}-${version}-${arch}.${ext}",
      "requestedExecutionLevel": "asInvoker",
-      "signAndEditExecutable": true
+      "signAndEditExecutable": false
    },
    "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",
@@ -113,8 +112,7 @@
        "AppImage",
        "snap"
      ],
-      "category": "Utility",
-      "icon": "assets/icon.png"
+      "category": "Utility"
    },
    "deb": {
      "depends": [
@@ -0,0 +1,116 @@
+# PanConverter Windows Explorer Context Menu Integration
+
+This directory contains scripts to add PanConverter to the Windows Explorer context menu, allowing you to right-click on files and convert them directly without opening the full application.
+
+## Features
+
+### Context Menu Options
+- **Convert with PanConverter**: Shows a format selection dialog for any supported file
+- **PanConverter > Convert to...**: Direct conversion options (for Markdown files)
+  - PDF
+  - HTML  
+  - DOCX
+  - LaTeX
+  - PowerPoint
+
+### Supported File Types
+- **Markdown**: `.md`, `.markdown`
+- **HTML**: `.html`, `.htm`
+- **Documents**: `.docx`, `.odt`, `.rtf`
+- **LaTeX**: `.tex`
+- **PDF**: `.pdf`
+- **Presentations**: `.pptx`, `.ppt`, `.odp`
+
+## Installation Methods
+
+### Method 1: Automatic (During PanConverter Installation)
+When installing PanConverter using the Windows installer, you'll be prompted to install context menu integration automatically.
+
+### Method 2: Manual Installation
+
+#### Using PowerShell (Recommended)
+1. Right-click on `install-context-menu.ps1`
+2. Select "Run with PowerShell"
+3. Follow the prompts (will request administrator privileges)
+
+#### Using Batch File
+1. Right-click on `install-context-menu.bat`
+2. Select "Run as administrator"
+3. Follow the prompts
+
+#### Using Registry File Directly
+1. Right-click on `install-context-menu.reg`
+2. Select "Merge" 
+3. Confirm the registry modification
+
+## Uninstallation
+
+### Using PowerShell
+```powershell
+.\install-context-menu.ps1 -Uninstall
+```
+
+### Using Batch File
+Run `uninstall-context-menu.bat` as administrator
+
+### Using Registry File
+Run `uninstall-context-menu.reg`
+
+## How It Works
+
+### Command Line Interface
+The context menu integration works by passing command line arguments to PanConverter:
+
+- `--convert <file>`: Shows conversion dialog for the specified file
+- `--convert-to <format> <file>`: Directly converts to the specified format
+
+### Examples
+```batch
+# Show conversion dialog
+PanConverter.exe --convert "document.md"
+
+# Direct conversion to PDF
+PanConverter.exe --convert-to pdf "document.md"
+```
+
+### Conversion Process
+1. PanConverter reads the input file
+2. Creates a temporary file if needed
+3. Uses Pandoc to convert to the target format
+4. Saves the output in the same directory as the input file
+5. Shows a Windows notification when complete
+
+## Requirements
+
+- PanConverter must be installed in the default location: `%LOCALAPPDATA%\Programs\PanConverter\`
+- Pandoc must be installed and accessible from the command line
+- Administrator privileges required for registry modifications
+
+## Troubleshooting
+
+### Context Menu Not Appearing
+1. Ensure you ran the installation script as administrator
+2. Try logging out and back in, or restart Windows Explorer
+3. Check if PanConverter is installed in the expected location
+
+### Conversion Failures
+1. Verify Pandoc is installed: `pandoc --version`
+2. Check if the input file is not corrupted or locked
+3. Ensure you have write permissions in the output directory
+
+### Permission Errors
+- The installation scripts require administrator privileges to modify the registry
+- If you get permission errors, right-click and "Run as administrator"
+
+## File Descriptions
+
+- `install-context-menu.reg`: Registry entries for context menu
+- `uninstall-context-menu.reg`: Registry entries removal
+- `install-context-menu.ps1`: PowerShell installation script
+- `install-context-menu.bat`: Batch installation script  
+- `uninstall-context-menu.bat`: Batch uninstallation script
+- `nsis-installer.nsh`: NSIS installer integration script
+
+## Security Note
+
+The scripts modify the Windows registry to add context menu entries. Only run these scripts if you trust the source and understand the changes being made to your system.
@@ -0,0 +1,48 @@
+@echo off
+echo PanConverter Context Menu Installation
+echo =====================================
+echo.
+
+REM Check for administrator privileges
+net session >nul 2>&1
+if %errorLevel% == 0 (
+    echo Running with administrator privileges...
+) else (
+    echo This script requires administrator privileges.
+    echo Please right-click and select "Run as administrator"
+    echo.
+    pause
+    exit /b 1
+)
+
+REM Check if PanConverter is installed
+if not exist "%LOCALAPPDATA%\Programs\PanConverter\PanConverter.exe" (
+    echo Warning: PanConverter not found at the expected location.
+    echo Please ensure PanConverter is installed before continuing.
+    echo Expected location: %LOCALAPPDATA%\Programs\PanConverter\PanConverter.exe
+    echo.
+    set /p continue="Continue anyway? (y/N): "
+    if /i not "%continue%"=="y" exit /b 1
+)
+
+echo Installing context menu entries...
+reg import "%~dp0install-context-menu.reg"
+
+if %errorLevel% == 0 (
+    echo.
+    echo Context menu integration installed successfully!
+    echo.
+    echo You can now right-click on supported files and select:
+    echo • "Convert with PanConverter" - Shows conversion dialog  
+    echo • "PanConverter > Convert to..." - Direct conversion ^(for Markdown^)
+    echo.
+    echo Supported file types:
+    echo .md .markdown .html .htm .docx .odt .rtf .tex .pdf .pptx .ppt .odp
+) else (
+    echo.
+    echo Failed to install context menu entries.
+    echo Please check that the registry file exists and try again.
+)
+
+echo.
+pause
@@ -0,0 +1,67 @@
+# PanConverter Context Menu Installation Script
+# This script installs PanConverter context menu integration for Windows Explorer
+
+param(
+    [switch]$Uninstall = $false
+)
+
+# Check if running as administrator
+if (-NOT ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
+    Write-Host "This script requires Administrator privileges. Restarting with elevated permissions..." -ForegroundColor Yellow
+    Start-Process PowerShell -Verb RunAs "-File `"$PSCommandPath`" $(if ($Uninstall) { '-Uninstall' })"
+    exit
+}
+
+$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
+$appPath = "${env:LOCALAPPDATA}\Programs\PanConverter\PanConverter.exe"
+
+if ($Uninstall) {
+    Write-Host "Uninstalling PanConverter context menu integration..." -ForegroundColor Yellow
+    $regFile = Join-Path $scriptDir "uninstall-context-menu.reg"
+    
+    if (Test-Path $regFile) {
+        reg import $regFile
+        if ($LASTEXITCODE -eq 0) {
+            Write-Host "PanConverter context menu has been successfully removed!" -ForegroundColor Green
+        } else {
+            Write-Host "Failed to remove context menu entries." -ForegroundColor Red
+        }
+    } else {
+        Write-Host "Uninstall registry file not found: $regFile" -ForegroundColor Red
+    }
+} else {
+    Write-Host "Installing PanConverter context menu integration..." -ForegroundColor Yellow
+    
+    # Check if PanConverter is installed
+    if (-not (Test-Path $appPath)) {
+        Write-Host "Warning: PanConverter executable not found at: $appPath" -ForegroundColor Yellow
+        Write-Host "Please make sure PanConverter is installed before running this script." -ForegroundColor Yellow
+        $continue = Read-Host "Continue anyway? (y/N)"
+        if ($continue -ne 'y' -and $continue -ne 'Y') {
+            exit
+        }
+    }
+    
+    $regFile = Join-Path $scriptDir "install-context-menu.reg"
+    
+    if (Test-Path $regFile) {
+        reg import $regFile
+        if ($LASTEXITCODE -eq 0) {
+            Write-Host "PanConverter context menu has been successfully installed!" -ForegroundColor Green
+            Write-Host "" 
+            Write-Host "You can now right-click on supported files (MD, HTML, DOCX, PDF, etc.) and select:" -ForegroundColor Cyan
+            Write-Host "• 'Convert with PanConverter' - Shows conversion dialog" -ForegroundColor Cyan
+            Write-Host "• 'PanConverter > Convert to...' - Direct conversion options (for Markdown files)" -ForegroundColor Cyan
+            Write-Host ""
+            Write-Host "Supported file types: .md, .markdown, .html, .htm, .docx, .odt, .rtf, .tex, .pdf, .pptx, .ppt, .odp" -ForegroundColor Gray
+        } else {
+            Write-Host "Failed to install context menu entries." -ForegroundColor Red
+        }
+    } else {
+        Write-Host "Install registry file not found: $regFile" -ForegroundColor Red
+    }
+}
+
+Write-Host ""
+Write-Host "Press any key to exit..."
+$null = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
@@ -0,0 +1,134 @@
+Windows Registry Editor Version 5.00
+
+; PanConverter Context Menu Integration
+; This registry file adds context menu options for converting files using PanConverter
+
+; Add context menu for Markdown files (.md, .markdown)
+[HKEY_CLASSES_ROOT\.md\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+[HKEY_CLASSES_ROOT\.markdown\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.markdown\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+; Add context menu for HTML files
+[HKEY_CLASSES_ROOT\.html\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.html\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+[HKEY_CLASSES_ROOT\.htm\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.htm\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+; Add context menu for DOCX files
+[HKEY_CLASSES_ROOT\.docx\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.docx\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+; Add context menu for ODT files
+[HKEY_CLASSES_ROOT\.odt\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.odt\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+; Add context menu for RTF files
+[HKEY_CLASSES_ROOT\.rtf\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.rtf\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+; Add context menu for LaTeX files
+[HKEY_CLASSES_ROOT\.tex\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.tex\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+; Add context menu for PDF files
+[HKEY_CLASSES_ROOT\.pdf\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.pdf\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+; Add context menu for PowerPoint files
+[HKEY_CLASSES_ROOT\.pptx\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.pptx\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+[HKEY_CLASSES_ROOT\.ppt\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.ppt\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+; Add context menu for OpenDocument Presentation files
+[HKEY_CLASSES_ROOT\.odp\shell\PanConverter]
+@="Convert with PanConverter"
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+
+[HKEY_CLASSES_ROOT\.odp\shell\PanConverter\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert \"%1\""
+
+; Add submenu with specific conversion options for Markdown files
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu]
+@="PanConverter"
+"MUIVerb"="Convert to..."
+"Icon"="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\""
+"SubCommands"=""
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu\shell\PDF]
+@="PDF"
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu\shell\PDF\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert-to pdf \"%1\""
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu\shell\HTML]
+@="HTML"
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu\shell\HTML\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert-to html \"%1\""
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu\shell\DOCX]
+@="DOCX"
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu\shell\DOCX\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert-to docx \"%1\""
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu\shell\LaTeX]
+@="LaTeX"
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu\shell\LaTeX\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert-to latex \"%1\""
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu\shell\PPTX]
+@="PowerPoint"
+
+[HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu\shell\PPTX\command]
+@="\"%LOCALAPPDATA%\\Programs\\PanConverter\\PanConverter.exe\" --convert-to pptx \"%1\""
@@ -0,0 +1,145 @@
+; PanConverter NSIS Installer Include File
+; Handles context menu installation and uninstallation
+
+!include "LogicLib.nsh"
+!include "MUI2.nsh"
+
+; Custom installation page for context menu option
+Var ContextMenuCheckbox
+Var ContextMenuState
+
+Function ContextMenuPage
+    !insertmacro MUI_HEADER_TEXT "Additional Options" "Choose additional installation options"
+    
+    nsDialogs::Create 1018
+    Pop $0
+    
+    ${If} $0 == error
+        Abort
+    ${EndIf}
+    
+    ${NSD_CreateLabel} 0 0 100% 20u "Select additional features to install:"
+    Pop $0
+    
+    ${NSD_CreateCheckbox} 20u 30u 280u 15u "Add PanConverter to Windows Explorer context menu"
+    Pop $ContextMenuCheckbox
+    ${NSD_SetState} $ContextMenuCheckbox ${BST_CHECKED}
+    
+    ${NSD_CreateLabel} 20u 50u 280u 30u "This will allow you to right-click on supported files and convert them directly using PanConverter."
+    Pop $0
+    
+    nsDialogs::Show
+FunctionEnd
+
+Function ContextMenuPageLeave
+    ${NSD_GetState} $ContextMenuCheckbox $ContextMenuState
+FunctionEnd
+
+; Install context menu entries
+Function InstallContextMenu
+    ${If} $ContextMenuState == ${BST_CHECKED}
+        DetailPrint "Installing context menu integration..."
+        
+        ; Create registry entries for context menu
+        WriteRegStr HKCR ".md\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".md\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".md\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        WriteRegStr HKCR ".markdown\shell\PanConverter" "" "Convert with PanConverter"  
+        WriteRegStr HKCR ".markdown\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".markdown\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        ; Context menu for HTML files
+        WriteRegStr HKCR ".html\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".html\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".html\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        WriteRegStr HKCR ".htm\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".htm\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".htm\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        ; Context menu for DOCX files
+        WriteRegStr HKCR ".docx\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".docx\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".docx\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        ; Context menu for ODT files
+        WriteRegStr HKCR ".odt\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".odt\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".odt\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        ; Context menu for RTF files
+        WriteRegStr HKCR ".rtf\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".rtf\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".rtf\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        ; Context menu for LaTeX files
+        WriteRegStr HKCR ".tex\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".tex\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".tex\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        ; Context menu for PDF files
+        WriteRegStr HKCR ".pdf\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".pdf\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".pdf\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        ; Context menu for PowerPoint files
+        WriteRegStr HKCR ".pptx\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".pptx\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".pptx\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        WriteRegStr HKCR ".ppt\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".ppt\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".ppt\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        ; Context menu for ODP files
+        WriteRegStr HKCR ".odp\shell\PanConverter" "" "Convert with PanConverter"
+        WriteRegStr HKCR ".odp\shell\PanConverter" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".odp\shell\PanConverter\command" "" '"$INSTDIR\PanConverter.exe" --convert "%1"'
+        
+        ; Submenu for Markdown files with direct conversion options
+        WriteRegStr HKCR ".md\shell\PanConverterMenu" "" "PanConverter"
+        WriteRegStr HKCR ".md\shell\PanConverterMenu" "MUIVerb" "Convert to..."
+        WriteRegStr HKCR ".md\shell\PanConverterMenu" "Icon" "$INSTDIR\PanConverter.exe"
+        WriteRegStr HKCR ".md\shell\PanConverterMenu" "SubCommands" ""
+        
+        WriteRegStr HKCR ".md\shell\PanConverterMenu\shell\PDF" "" "PDF"
+        WriteRegStr HKCR ".md\shell\PanConverterMenu\shell\PDF\command" "" '"$INSTDIR\PanConverter.exe" --convert-to pdf "%1"'
+        
+        WriteRegStr HKCR ".md\shell\PanConverterMenu\shell\HTML" "" "HTML"
+        WriteRegStr HKCR ".md\shell\PanConverterMenu\shell\HTML\command" "" '"$INSTDIR\PanConverter.exe" --convert-to html "%1"'
+        
+        WriteRegStr HKCR ".md\shell\PanConverterMenu\shell\DOCX" "" "DOCX"
+        WriteRegStr HKCR ".md\shell\PanConverterMenu\shell\DOCX\command" "" '"$INSTDIR\PanConverter.exe" --convert-to docx "%1"'
+        
+        WriteRegStr HKCR ".md\shell\PanConverterMenu\shell\LaTeX" "" "LaTeX"
+        WriteRegStr HKCR ".md\shell\PanConverterMenu\shell\LaTeX\command" "" '"$INSTDIR\PanConverter.exe" --convert-to latex "%1"'
+        
+        WriteRegStr HKCR ".md\shell\PanConverterMenu\shell\PPTX" "" "PowerPoint"
+        WriteRegStr HKCR ".md\shell\PanConverterMenu\shell\PPTX\command" "" '"$INSTDIR\PanConverter.exe" --convert-to pptx "%1"'
+        
+        DetailPrint "Context menu integration installed successfully!"
+    ${EndIf}
+FunctionEnd
+
+; Uninstall context menu entries
+Function un.RemoveContextMenu
+    DetailPrint "Removing context menu integration..."
+    
+    ; Remove context menu entries for all file types
+    DeleteRegKey HKCR ".md\shell\PanConverter"
+    DeleteRegKey HKCR ".md\shell\PanConverterMenu"
+    DeleteRegKey HKCR ".markdown\shell\PanConverter"
+    DeleteRegKey HKCR ".html\shell\PanConverter"
+    DeleteRegKey HKCR ".htm\shell\PanConverter"
+    DeleteRegKey HKCR ".docx\shell\PanConverter"
+    DeleteRegKey HKCR ".odt\shell\PanConverter"
+    DeleteRegKey HKCR ".rtf\shell\PanConverter"
+    DeleteRegKey HKCR ".tex\shell\PanConverter"
+    DeleteRegKey HKCR ".pdf\shell\PanConverter"
+    DeleteRegKey HKCR ".pptx\shell\PanConverter"
+    DeleteRegKey HKCR ".ppt\shell\PanConverter"
+    DeleteRegKey HKCR ".odp\shell\PanConverter"
+    
+    DetailPrint "Context menu integration removed successfully!"
+FunctionEnd
@@ -0,0 +1,32 @@
+@echo off
+echo PanConverter Context Menu Uninstallation
+echo ========================================
+echo.
+
+REM Check for administrator privileges
+net session >nul 2>&1
+if %errorLevel% == 0 (
+    echo Running with administrator privileges...
+) else (
+    echo This script requires administrator privileges.
+    echo Please right-click and select "Run as administrator"
+    echo.
+    pause
+    exit /b 1
+)
+
+echo Removing context menu entries...
+reg import "%~dp0uninstall-context-menu.reg"
+
+if %errorLevel% == 0 (
+    echo.
+    echo Context menu integration removed successfully!
+    echo PanConverter entries have been removed from the Windows Explorer context menu.
+) else (
+    echo.
+    echo Failed to remove context menu entries.
+    echo Please check that the registry file exists and try again.
+)
+
+echo.
+pause
@@ -0,0 +1,36 @@
+Windows Registry Editor Version 5.00
+
+; PanConverter Context Menu Uninstall Script
+; This registry file removes PanConverter context menu entries
+
+; Remove context menu for Markdown files (.md, .markdown)
+[-HKEY_CLASSES_ROOT\.md\shell\PanConverter]
+[-HKEY_CLASSES_ROOT\.md\shell\PanConverterMenu]
+
+[-HKEY_CLASSES_ROOT\.markdown\shell\PanConverter]
+
+; Remove context menu for HTML files
+[-HKEY_CLASSES_ROOT\.html\shell\PanConverter]
+[-HKEY_CLASSES_ROOT\.htm\shell\PanConverter]
+
+; Remove context menu for DOCX files
+[-HKEY_CLASSES_ROOT\.docx\shell\PanConverter]
+
+; Remove context menu for ODT files
+[-HKEY_CLASSES_ROOT\.odt\shell\PanConverter]
+
+; Remove context menu for RTF files
+[-HKEY_CLASSES_ROOT\.rtf\shell\PanConverter]
+
+; Remove context menu for LaTeX files
+[-HKEY_CLASSES_ROOT\.tex\shell\PanConverter]
+
+; Remove context menu for PDF files
+[-HKEY_CLASSES_ROOT\.pdf\shell\PanConverter]
+
+; Remove context menu for PowerPoint files
+[-HKEY_CLASSES_ROOT\.pptx\shell\PanConverter]
+[-HKEY_CLASSES_ROOT\.ppt\shell\PanConverter]
+
+; Remove context menu for OpenDocument Presentation files
+[-HKEY_CLASSES_ROOT\.odp\shell\PanConverter]
@@ -5,14 +5,16 @@ const { exec } = require('child_process');

 // Get the system Pandoc path
 function getPandocPath() {
-  // Always use system pandoc - no bundled binaries
+  // Pandoc is expected to be in the system's PATH.
+  // The command will be executed directly. Quoting is handled by exec.
  return 'pandoc';
 }

 // Check if Pandoc is available
 function checkPandocAvailable() {
  return new Promise((resolve) => {
-    exec('pandoc --version', (error) => {
+    const pandocPath = getPandocPath();
+    exec(`${pandocPath} --version`, (error) => {
      resolve(!error);
    });
  });
@@ -43,6 +45,22 @@ const store = {

 let mainWindow;
 let currentFile = null; // This will now represent the active tab's file
+let pandocAvailable = null; // Cache pandoc availability check
+
+// Check if pandoc is available
+function checkPandocAvailability() {
+  return new Promise((resolve) => {
+    if (pandocAvailable !== null) {
+      resolve(pandocAvailable);
+      return;
+    }
+    
+    exec('pandoc --version', (error, stdout, stderr) => {
+      pandocAvailable = !error;
+      resolve(pandocAvailable);
+    });
+  });
+}

 function createWindow() {
  mainWindow = new BrowserWindow({
@@ -163,7 +181,7 @@ function createMenu() {
            { label: 'PowerPoint (PPTX)', click: () => exportFile('pptx') },
            { label: 'OpenDocument Presentation (ODP)', click: () => exportFile('odp') },
            { type: 'separator' },
-            { label: 'CSV (Tables)', click: () => exportSpreadsheet('csv') }
+            { label: 'CSV (Tables)', click: () => exportSpreadsheet('csv') },
          ]
        },
        { type: 'separator' },
@@ -259,7 +277,7 @@ function createMenu() {
              type: 'info',
              title: 'About PanConverter',
              message: 'PanConverter',
-              detail: 'A cross-platform Markdown editor and converter using Pandoc.\n\nVersion: 1.5.0\nAuthor: Amit Haridas\nEmail: amit.wh@gmail.com\nLicense: MIT\n\nFeatures:\n• Tabbed interface for multiple files\n• Advanced markdown editing with live preview\n• Enhanced PDF export with LaTeX engines\n• Optional advanced export options\n• Advanced export options with templates and metadata\n• Batch file conversion with progress tracking\n• Improved preview typography and spacing\n• Adjustable font sizes via menu (Ctrl+Shift+Plus/Minus)\n• Complete theme support including Monokai fixes\n• Find & replace with match highlighting\n• Line numbers and auto-indentation\n• Export to multiple formats via Pandoc\n• PowerPoint & presentation export\n• Export tables to CSV format\n• Document import & conversion\n• Table creation helper\n• Multiple themes support\n• Undo/redo functionality\n• Live word count and statistics',
+              detail: 'A cross-platform Markdown editor and converter using Pandoc.\n\nVersion: 1.5.7\nAuthor: Amit Haridas\nEmail: amit.wh@gmail.com\nLicense: MIT\n\nFeatures:\n• Windows Explorer context menu integration\n• Tabbed interface for multiple files\n• Advanced markdown editing with live preview\n• Real-time preview updates while typing\n• Full toolbar markdown editing functions\n• Enhanced PDF export with built-in Electron fallback\n• File association support for .md files\n• Command-line interface for batch conversion\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 Excel/ODS spreadsheets\n• Document import & conversion\n• Table creation helper\n• Multiple themes support\n• Undo/redo functionality\n• Live word count and statistics',
              buttons: ['OK']
            });
          }
@@ -333,7 +351,36 @@ function performExportWithOptions(format, options) {
    ]
  });

-  if (outputFile) {
+  if (!outputFile) return; // User cancelled
+
+  console.log(`Attempting to export ${format} to:`, outputFile);
+
+  // Check pandoc availability first
+  checkPandocAvailability().then((hasPandoc) => {
+    console.log('Pandoc available:', hasPandoc);
+    
+    if (!hasPandoc) {
+      // Handle formats that don't require pandoc
+      if (format === 'html') {
+        console.log('Using built-in HTML export');
+        exportToHTML(outputFile);
+        return;
+      } else if (format === 'pdf') {
+        console.log('Using built-in PDF export');
+        exportToPDFElectron(outputFile);
+        return;
+      } else {
+        dialog.showErrorBox('Export Error', 
+          `Pandoc is required for ${format.toUpperCase()} export but is not installed or not found in PATH.\n\n` +
+          `Please install Pandoc from: https://pandoc.org/installing.html\n\n` +
+          `Alternatively, you can export to HTML or PDF using the built-in converters.`
+        );
+        return;
+      }
+    }
+
+    // Use pandoc for export with advanced options
+    console.log('Using Pandoc for export');
    let pandocCmd = `${getPandocPath()} "${currentFile}" -o "${outputFile}"`;

    // Add template if specified
@@ -369,12 +416,12 @@ function performExportWithOptions(format, options) {

    // Add specific options for PDF export to ensure proper generation
    if (format === 'pdf') {
-      const pdfEngine = options.pdfEngine || 'xelatex';
-      const geometry = options.geometry || 'margin=1in';
-      pandocCmd += ` --pdf-engine=${pdfEngine} -V geometry:${geometry}`;
+      const pdfEngine = options.pdfEngine || 'xelatex'; // Default to xelatex
+      pandocCmd += ` --pdf-engine="${pdfEngine}"`;
+      if (options.geometry) pandocCmd += ` -V geometry:"${options.geometry}"`;

      // Try with specified PDF engine
-      exec(pandocCmd, (error, stdout, stderr) => {
+      exec(pandocCmd, (error) => {
        if (error) {
          // Try fallback engines if the specified one fails
          const fallbackEngines = ['pdflatex', 'lualatex'];
@@ -383,16 +430,17 @@ function performExportWithOptions(format, options) {
          showExportSuccess(outputFile);
        }
      });
+    } else if (format === 'docx') {
+      pandocCmd += ' -t docx';
+      exportWithPandoc(pandocCmd, outputFile, format);
    } else {
-      exec(pandocCmd, (error, stdout, stderr) => {
-        if (error) {
-          dialog.showErrorBox('Export Error', `Failed to export: ${error.message}\n\nMake sure Pandoc is installed.`);
-        } else {
-          showExportSuccess(outputFile);
-        }
-      });
+      // Generic export for other formats
+      exportWithPandoc(pandocCmd, outputFile, format);
    }
-  }
+  }).catch((error) => {
+    console.error('Error checking pandoc availability:', error);
+    dialog.showErrorBox('Export Error', `Error checking system requirements: ${error.message}`);
+  });
 }

 function tryPdfFallback(inputFile, outputFile, engines, index, options, lastError) {
@@ -408,9 +456,10 @@ function tryPdfFallback(inputFile, outputFile, engines, index, options, lastErro
  }

  const engine = engines[index];
-  const geometry = options.geometry || 'margin=1in';
  let pandocCmd = `${getPandocPath()} "${inputFile}" --pdf-engine=${engine} -V geometry:${geometry} -o "${outputFile}"`;

+  if (options.geometry) pandocCmd += ` -V geometry:"${options.geometry}"`;
+
  // Add all other options
  if (options.template && options.template !== 'default') {
    pandocCmd += ` --template="${options.template}"`;
@@ -424,7 +473,7 @@ function tryPdfFallback(inputFile, outputFile, engines, index, options, lastErro
    }
  }

-  exec(pandocCmd, (error, stdout, stderr) => {
+  exec(pandocCmd, (error) => {
    if (error) {
      tryPdfFallback(inputFile, outputFile, engines, index + 1, options, error);
    } else {
@@ -442,6 +491,265 @@ function showExportSuccess(outputFile) {
  });
 }

+// Helper function to export with pandoc (general)
+function exportWithPandoc(pandocCmd, outputFile, format) {
+  console.log(`Executing Pandoc command: ${pandocCmd}`);
+  
+  exec(pandocCmd, (error, stdout, stderr) => {
+    if (error) {
+      console.error(`Pandoc error for ${format}:`, error);
+      console.error(`Pandoc stderr:`, stderr);
+      console.error(`Pandoc stdout:`, stdout);
+      
+      // Provide more specific error messages
+      let errorMessage = `Failed to export to ${format.toUpperCase()}`;
+      
+      if (error.message.includes('not found') || error.message.includes('not recognized')) {
+        errorMessage += '\n\nPandoc is not installed or not found in PATH.';
+        errorMessage += '\nPlease install Pandoc from: https://pandoc.org/installing.html';
+      } else if (stderr) {
+        errorMessage += `\n\nError details: ${stderr}`;
+      } else {
+        errorMessage += `\n\nError details: ${error.message}`;
+      }
+      
+      errorMessage += `\n\nCommand used: ${pandocCmd}`;
+      
+      dialog.showErrorBox('Export Error', errorMessage);
+    } else {
+      console.log(`Successfully exported to ${format}:`, outputFile);
+      console.log(`Pandoc stdout:`, stdout);
+      if (stderr) {
+        console.warn(`Pandoc stderr (non-fatal):`, stderr);
+      }
+      showExportSuccess(outputFile);
+    }
+  });
+}
+
+// Helper function to export PDF with pandoc (with fallbacks)
+function exportWithPandocPDF(pandocCmd, outputFile) {
+  exec(pandocCmd, (error, stdout, stderr) => {
+    if (error) {
+      console.log('XeLaTeX failed, trying PDFLaTeX...');
+      // Fallback to pdflatex
+      const fallbackCmd = pandocCmd.replace('--pdf-engine=xelatex', '--pdf-engine=pdflatex');
+      exec(fallbackCmd, (fallbackError, fallbackStdout, fallbackStderr) => {
+        if (fallbackError) {
+          console.log('PDFLaTeX failed, trying Electron PDF...');
+          // Final fallback to Electron PDF
+          exportToPDFElectron(outputFile);
+        } else {
+          console.log('Successfully exported PDF with PDFLaTeX');
+          showExportSuccess(outputFile);
+        }
+      });
+    } else {
+      console.log('Successfully exported PDF with XeLaTeX');
+      showExportSuccess(outputFile);
+    }
+  });
+}
+
+// Export to HTML using marked (no pandoc required)
+function exportToHTML(outputFile) {
+  try {
+    const marked = require('marked');
+    const markdownContent = fs.readFileSync(currentFile, 'utf8');
+    const htmlContent = marked.parse(markdownContent);
+    
+    const fullHtml = `<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Exported Document</title>
+    <style>
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
+            line-height: 1.6;
+            color: #333;
+            max-width: 800px;
+            margin: 0 auto;
+            padding: 40px;
+        }
+        h1, h2, h3, h4, h5, h6 {
+            margin-top: 1.5em;
+            margin-bottom: 0.5em;
+        }
+        code {
+            background: #f4f4f4;
+            padding: 2px 4px;
+            border-radius: 3px;
+            font-family: Consolas, Monaco, 'Courier New', monospace;
+        }
+        pre {
+            background: #f4f4f4;
+            padding: 1em;
+            border-radius: 5px;
+            overflow-x: auto;
+        }
+        pre code {
+            background: transparent;
+            padding: 0;
+        }
+        blockquote {
+            border-left: 4px solid #ddd;
+            margin-left: 0;
+            padding-left: 1em;
+            color: #666;
+        }
+        table {
+            border-collapse: collapse;
+            width: 100%;
+            margin: 1em 0;
+        }
+        th, td {
+            border: 1px solid #ddd;
+            padding: 8px;
+            text-align: left;
+        }
+        th {
+            background-color: #f4f4f4;
+        }
+        a {
+            color: #0066cc;
+            text-decoration: none;
+        }
+        a:hover {
+            text-decoration: underline;
+        }
+        img {
+            max-width: 100%;
+            height: auto;
+        }
+    </style>
+</head>
+<body>
+    ${htmlContent}
+</body>
+</html>`;
+
+    fs.writeFileSync(outputFile, fullHtml, 'utf8');
+    console.log('Successfully exported HTML');
+    showExportSuccess(outputFile);
+  } catch (error) {
+    console.error('HTML export error:', error);
+    dialog.showErrorBox('HTML Export Error', `Failed to export HTML: ${error.message}`);
+  }
+}
+
+// Export to PDF using Electron (no pandoc required)
+function exportToPDFElectron(outputFile) {
+  try {
+    const marked = require('marked');
+    const markdownContent = fs.readFileSync(currentFile, 'utf8');
+    const htmlContent = marked.parse(markdownContent);
+    
+    const fullHtml = `<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>PDF Export</title>
+    <style>
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
+            line-height: 1.6;
+            color: #333;
+            max-width: 800px;
+            margin: 0 auto;
+            padding: 40px;
+        }
+        h1, h2, h3, h4, h5, h6 {
+            margin-top: 1.5em;
+            margin-bottom: 0.5em;
+        }
+        code {
+            background: #f4f4f4;
+            padding: 2px 4px;
+            border-radius: 3px;
+            font-family: Consolas, Monaco, 'Courier New', monospace;
+        }
+        pre {
+            background: #f4f4f4;
+            padding: 1em;
+            border-radius: 5px;
+            overflow-x: auto;
+        }
+        pre code {
+            background: transparent;
+            padding: 0;
+        }
+        blockquote {
+            border-left: 4px solid #ddd;
+            margin-left: 0;
+            padding-left: 1em;
+            color: #666;
+        }
+        table {
+            border-collapse: collapse;
+            width: 100%;
+            margin: 1em 0;
+        }
+        th, td {
+            border: 1px solid #ddd;
+            padding: 8px;
+            text-align: left;
+        }
+        th {
+            background-color: #f4f4f4;
+        }
+        img {
+            max-width: 100%;
+            height: auto;
+        }
+        @media print {
+            body { padding: 20px; }
+        }
+    </style>
+</head>
+<body>
+    ${htmlContent}
+</body>
+</html>`;
+
+    // Create a hidden window to render and export PDF
+    const pdfWindow = new BrowserWindow({
+      show: false,
+      webPreferences: {
+        nodeIntegration: true,
+        contextIsolation: false
+      }
+    });
+    
+    pdfWindow.loadURL(`data:text/html;charset=utf-8,${encodeURIComponent(fullHtml)}`).then(() => {
+      return pdfWindow.webContents.printToPDF({
+        marginsType: 1, // Use default margins
+        pageSize: 'A4',
+        printBackground: true,
+        printSelectionOnly: false,
+        landscape: false
+      });
+    }).then((pdfData) => {
+      fs.writeFileSync(outputFile, pdfData);
+      pdfWindow.close();
+      console.log('Successfully exported PDF with Electron');
+      showExportSuccess(outputFile);
+    }).catch((error) => {
+      pdfWindow.close();
+      console.error('Electron PDF export error:', error);
+      dialog.showErrorBox('PDF Export Error', 
+        `Failed to export PDF using built-in engine: ${error.message}\n\n` +
+        `For better PDF export, please install Pandoc with LaTeX support.`
+      );
+    });
+  } catch (error) {
+    console.error('PDF export setup error:', error);
+    dialog.showErrorBox('PDF Export Error', `Failed to setup PDF export: ${error.message}`);
+  }
+}
+
 function exportSpreadsheet(format) {
  if (!currentFile) {
    dialog.showErrorBox('Error', 'Please save the file first');
@@ -566,30 +874,31 @@ ipcMain.on('export-spreadsheet', (event, { content, format }) => {
        return;
      }

-      // Convert tables to CSV format
-      let csvContent = '';
-      tables.forEach((table, index) => {
-        if (index > 0) csvContent += '\n\n'; // Separate multiple tables
-        if (tables.length > 1) csvContent += `"Table ${index + 1}"\n`;
+      if (format === 'csv') {
+        // Convert tables to CSV format
+        let csvContent = '';
+        tables.forEach((table, index) => {
+          if (index > 0) csvContent += '\n\n'; // Separate multiple tables
+          if (tables.length > 1) csvContent += `"Table ${index + 1}"\n`;

-        table.forEach(row => {
-          const csvRow = row.map(cell => {
-            // Escape quotes and wrap in quotes if necessary
-            const cleanCell = cell.replace(/"/g, '""');
-            return cleanCell.includes(',') || cleanCell.includes('"') || cleanCell.includes('\n')
-              ? `"${cleanCell}"` : cleanCell;
-          }).join(',');
-          csvContent += csvRow + '\n';
+          table.forEach(row => {
+            const csvRow = row.map(cell => {
+              // Escape quotes and wrap in quotes if necessary
+              const cleanCell = cell.replace(/"/g, '""');
+              return cleanCell.includes(',') || cleanCell.includes('"') || cleanCell.includes('\n')
+                ? `"${cleanCell}"` : cleanCell;
+            }).join(',');
+            csvContent += csvRow + '\n';
+          });
        });
-      });

-      // Write CSV file
-      fs.writeFileSync(outputFile, csvContent, 'utf-8');
+        fs.writeFileSync(outputFile, csvContent, 'utf-8');
+      }

      dialog.showMessageBox(mainWindow, {
        type: 'info',
        title: 'Export Complete',
-        message: `CSV exported successfully to ${outputFile}`,
+        message: `${format.toUpperCase()} exported successfully to ${outputFile}`,
        buttons: ['OK']
      });
    } catch (error) {
@@ -746,8 +1055,8 @@ function performBatchConversion(inputFolder, outputFolder, format, options) {
    // Add PDF-specific options
    if (format === 'pdf') {
      const pdfEngine = options.pdfEngine || 'xelatex';
-      const geometry = options.geometry || 'margin=1in';
-      pandocCmd += ` --pdf-engine=${pdfEngine} -V geometry:${geometry}`;
+      pandocCmd += ` --pdf-engine="${pdfEngine}"`;
+      if (options.geometry) pandocCmd += ` -V geometry:"${options.geometry}"`;
    }

    // Execute conversion
@@ -773,7 +1082,151 @@ function performBatchConversion(inputFolder, outputFolder, format, options) {
  processNextFile(0);
 }

+// Handle command line interface for file conversion
+function handleCLIConversion(args) {
+  const command = args[0];
+  const filePath = args[args.length - 1]; // File path is always last argument
+  
+  if (!fs.existsSync(filePath)) {
+    console.error(`Error: File not found: ${filePath}`);
+    app.quit();
+    return;
+  }
+
+  // Show conversion dialog for --convert command
+  if (command === '--convert') {
+    showConversionDialog(filePath);
+    return;
+  }
+
+  // Direct conversion for --convert-to command
+  if (command === '--convert-to' && args.length >= 3) {
+    const format = args[1];
+    performCLIConversion(filePath, format);
+    return;
+  }
+
+  console.error('Usage: --convert <file> OR --convert-to <format> <file>');
+  app.quit();
+}
+
+// Show conversion dialog for CLI
+function showConversionDialog(filePath) {
+  const { dialog } = require('electron');
+  
+  // Create a hidden window for dialog operations
+  const hiddenWindow = new BrowserWindow({
+    show: false,
+    webPreferences: {
+      nodeIntegration: true,
+      contextIsolation: false
+    }
+  });
+
+  const formats = [
+    { name: 'PDF', value: 'pdf' },
+    { name: 'HTML', value: 'html' },
+    { name: 'DOCX', value: 'docx' },
+    { name: 'LaTeX', value: 'latex' },
+    { name: 'RTF', value: 'rtf' },
+    { name: 'ODT', value: 'odt' },
+    { name: 'PowerPoint', value: 'pptx' }
+  ];
+
+  // Create format selection dialog using message box
+  const formatButtons = formats.map(f => f.name);
+  formatButtons.push('Cancel');
+
+  dialog.showMessageBox(hiddenWindow, {
+    type: 'question',
+    title: 'PanConverter - Choose Format',
+    message: `Convert "${path.basename(filePath)}" to:`,
+    detail: 'Select the output format for conversion',
+    buttons: formatButtons,
+    defaultId: 0,
+    cancelId: formatButtons.length - 1
+  }).then(result => {
+    if (result.response < formats.length) {
+      const selectedFormat = formats[result.response].value;
+      performCLIConversion(filePath, selectedFormat);
+    } else {
+      console.log('Conversion cancelled');
+      app.quit();
+    }
+    hiddenWindow.destroy();
+  });
+}
+
+// Perform CLI conversion
+function performCLIConversion(inputPath, format) {
+  try {
+    const content = fs.readFileSync(inputPath, 'utf-8');
+    const outputPath = inputPath.replace(/\.[^/.]+$/, `.${format}`);
+    
+    console.log(`Converting "${path.basename(inputPath)}" to ${format.toUpperCase()}...`);
+    
+    // Use existing export functions but with CLI output
+    const pandocCommand = buildPandocCommand(content, format, outputPath);
+    
+    exec(pandocCommand, (error, stdout, stderr) => {
+      if (error) {
+        console.error(`Conversion failed: ${error.message}`);
+        if (stderr) console.error(`Details: ${stderr}`);
+        app.quit();
+        return;
+      }
+      
+      console.log(`Successfully converted to: ${outputPath}`);
+      
+      // Show Windows notification
+      if (process.platform === 'win32') {
+        exec(`powershell -Command "New-BurntToastNotification -Text 'PanConverter', 'File converted to ${format.toUpperCase()}' -AppLogo '${path.join(__dirname, '../assets/icon.png')}'"`, () => {});
+      }
+      
+      app.quit();
+    });
+  } catch (error) {
+    console.error(`Error reading file: ${error.message}`);
+    app.quit();
+  }
+}
+
+// Build Pandoc command for CLI conversion
+function buildPandocCommand(content, format, outputPath) {
+  const inputFile = path.join(require('os').tmpdir(), `panconverter_temp_${Date.now()}.md`);
+  fs.writeFileSync(inputFile, content, 'utf-8');
+  
+  let command = `pandoc "${inputFile}" -o "${outputPath}"`;
+  
+  switch (format) {
+    case 'pdf':
+      command += ' --pdf-engine=xelatex --variable geometry:margin=1in';
+      break;
+    case 'html':
+      command += ' --self-contained --css';
+      break;
+    case 'docx':
+      command += ' --reference-doc';
+      break;
+    case 'latex':
+      command += ' --standalone';
+      break;
+    case 'pptx':
+      command += ' --slide-level=2';
+      break;
+  }
+  
+  return command;
+}
+
 app.whenReady().then(() => {
+  // Check for command line conversion requests
+  const args = process.argv.slice(2);
+  if (args.length >= 2 && (args[0] === '--convert' || args[0] === '--convert-to')) {
+    handleCLIConversion(args);
+    return; // Don't create window for CLI operations
+  }
+  
  createWindow();
  
  // Handle file association on app startup
@@ -9,7 +9,10 @@ marked.setOptions({
        if (lang && hljs.getLanguage(lang)) {
            try {
                return hljs.highlight(code, { language: lang }).value;
-            } catch (err) {}
+            } catch (err) {
+                // Fallback to auto highlighting if language-specific highlighting fails
+                console.warn('Syntax highlighting failed for language:', lang, err.message);
+            }
        }
        return hljs.highlightAuto(code).value;
    },
@@ -74,6 +77,7 @@ class TabManager {
            if (e.ctrlKey || e.metaKey) {
                switch (e.key) {
                    case 'n':
+                    case 't':
                        e.preventDefault();
                        this.createNewTab();
                        break;
@@ -83,10 +87,6 @@ class TabManager {
                            this.closeTab(this.activeTabId);
                        }
                        break;
-                    case 't':
-                        e.preventDefault();
-                        this.createNewTab();
-                        break;
                    case 'Tab':
                        if (this.tabs.size > 1) {
                            e.preventDefault();
@@ -125,7 +125,7 @@ class TabManager {
        tabContent.className = 'tab-content';
        tabContent.id = `tab-content-${tab.id}`;
        tabContent.dataset.tabId = tab.id;
-        
+
        tabContent.innerHTML = `
            <div id="editor-pane-${tab.id}" class="pane">
                <div class="editor-wrapper">
@@ -137,8 +137,16 @@ class TabManager {
                <div id="preview-${tab.id}" class="preview-content"></div>
            </div>
        `;
-        
+
        document.querySelector('.editor-container').appendChild(tabContent);
+
+        // Directly attach input listener to the new editor
+        const editor = document.getElementById(`editor-${tab.id}`);
+        if (editor) {
+            editor.addEventListener('input', () => {
+                this.handleEditorInput(tab.id);
+            });
+        }
    }
    
    switchToTab(tabId) {
@@ -156,7 +164,7 @@ class TabManager {
        
        // Notify main process about current file for exports
        const tab = this.tabs.get(tabId);
-        if (tab && tab.filePath) {
+        if (tab?.filePath) {
            ipcRenderer.send('set-current-file', tab.filePath);
        }
    }
@@ -173,14 +181,16 @@ class TabManager {
        
        const tab = this.tabs.get(tabId);
        if (tab.isDirty) {
-            // TODO: Show confirmation dialog
+            // Show confirmation dialog for unsaved changes
+            const result = confirm('You have unsaved changes. Do you want to close this tab without saving?');
+            if (!result) return;
        }
        
        // Remove tab elements
        const tabElement = document.querySelector(`[data-tab-id="${tabId}"]`);
        const tabContent = document.getElementById(`tab-content-${tabId}`);
        
-        if (tabElement && tabElement.classList.contains('tab')) {
+        if (tabElement?.classList.contains('tab')) {
            tabElement.remove();
        }
        if (tabContent) {
@@ -260,10 +270,9 @@ class TabManager {
    restoreTabState(tabId) {
        const tab = this.tabs.get(tabId);
        if (!tab) return;
-        
+
        const editor = document.getElementById(`editor-${tabId}`);
-        const preview = document.getElementById(`preview-${tabId}`);
-        
+
        if (editor) {
            editor.value = tab.content;
            this.updatePreview(tabId);
@@ -281,9 +290,9 @@ class TabManager {
    updatePreview(tabId = this.activeTabId) {
        const tab = this.tabs.get(tabId);
        const preview = document.getElementById(`preview-${tabId}`);
-        
+
        if (!tab || !preview) return;
-        
+
        try {
            const html = marked.parse(tab.content);
            const sanitizedHtml = DOMPurify.sanitize(html);
@@ -305,7 +314,8 @@ class TabManager {
                }
            }
        } catch (error) {
-            preview.innerHTML = '<p>Error rendering preview</p>';
+            console.error('Error rendering preview:', error);
+            preview.innerHTML = '<p class="error">Error rendering preview. Please check your markdown syntax.</p>';
        }
    }
    
@@ -374,39 +384,39 @@ class TabManager {
    }
    
    setupEditorEvents() {
-        // Set up editor events using event delegation
-        document.addEventListener('input', (e) => {
-            if (e.target.classList.contains('editor-textarea')) {
-                const tabId = parseInt(e.target.id.split('-')[1]);
-                if (tabId === this.activeTabId) {
+        // Set up editor events using event delegation on the container
+        const editorContainer = document.querySelector('.editor-container');
+        if (editorContainer) {
+            editorContainer.addEventListener('input', (e) => {
+                if (e.target.classList.contains('editor-textarea')) {
+                    const tabId = parseInt(e.target.id.split('-')[1]);
                    this.handleEditorInput(tabId);
                }
-            }
-        });
-        
-        document.addEventListener('scroll', (e) => {
-            if (e.target.classList.contains('editor-textarea')) {
-                const tabId = parseInt(e.target.id.split('-')[1]);
-                if (tabId === this.activeTabId) {
+            });
+
+            editorContainer.addEventListener('scroll', (e) => {
+                if (e.target.classList.contains('editor-textarea')) {
                    this.updateLineNumbers();
                }
-            }
-        });
+            }, true);
+        }
    }
    
    handleEditorInput(tabId) {
        const tab = this.tabs.get(tabId);
        if (!tab) return;
-        
+
        const editor = document.getElementById(`editor-${tabId}`);
+        if (!editor) return;
+
        tab.content = editor.value;
        tab.isDirty = true;
-        
+
        this.updatePreview(tabId);
        this.updateWordCount();
        this.updateLineNumbers();
        this.updateTabBar();
-        
+
        // Add to undo stack
        this.pushUndoState(tabId);
    }
@@ -515,7 +525,7 @@ class TabManager {

        // Save to localStorage and sync with main process
        localStorage.setItem('recentFiles', JSON.stringify(this.recentFiles));
-        window.electronAPI.send('save-recent-files', this.recentFiles);
+        ipcRenderer.send('save-recent-files', this.recentFiles);
    }

    getRecentFiles() {
@@ -530,18 +540,121 @@ class TabManager {
    }

    setupToolbarEvents() {
-        // Existing toolbar setup...
+        // Bold
+        document.getElementById('btn-bold').addEventListener('click', () => {
+            this.wrapSelection('**', '**');
+        });
+
+        // Italic
+        document.getElementById('btn-italic').addEventListener('click', () => {
+            this.wrapSelection('*', '*');
+        });
+
+        // Heading
+        document.getElementById('btn-heading').addEventListener('click', () => {
+            this.insertAtLineStart('## ');
+        });
+
+        // Link
+        document.getElementById('btn-link').addEventListener('click', () => {
+            this.wrapSelection('[', '](url)');
+        });
+
+        // Code
+        document.getElementById('btn-code').addEventListener('click', () => {
+            this.wrapSelection('`', '`');
+        });
+
+        // List
+        document.getElementById('btn-list').addEventListener('click', () => {
+            this.insertAtLineStart('- ');
+        });
+
+        // Quote
+        document.getElementById('btn-quote').addEventListener('click', () => {
+            this.insertAtLineStart('> ');
+        });
+
+        // Table
+        document.getElementById('btn-table').addEventListener('click', () => {
+            this.insertTable();
+        });
+
+        // Preview toggle
        document.getElementById('btn-preview-toggle').addEventListener('click', () => {
            this.isPreviewVisible = !this.isPreviewVisible;
            this.updatePreviewVisibility();
        });
-        
+
+        // Line numbers
        document.getElementById('btn-line-numbers').addEventListener('click', () => {
            this.showLineNumbers = !this.showLineNumbers;
            this.updateLineNumbers();
        });
-        
-        // Add other toolbar events...
+    }
+
+    // Helper function to wrap selected text
+    wrapSelection(before, after) {
+        const editor = document.getElementById(`editor-${this.activeTabId}`);
+        if (!editor) return;
+
+        const start = editor.selectionStart;
+        const end = editor.selectionEnd;
+        const selectedText = editor.value.substring(start, end);
+        const replacement = before + (selectedText || 'text') + after;
+
+        editor.value = editor.value.substring(0, start) + replacement + editor.value.substring(end);
+
+        // Update cursor position
+        const newCursorPos = selectedText ? start + replacement.length : start + before.length;
+        editor.selectionStart = editor.selectionEnd = newCursorPos;
+        editor.focus();
+
+        // Trigger update
+        this.handleEditorInput(this.activeTabId);
+    }
+
+    // Helper function to insert text at the start of current line
+    insertAtLineStart(prefix) {
+        const editor = document.getElementById(`editor-${this.activeTabId}`);
+        if (!editor) return;
+
+        const start = editor.selectionStart;
+        const text = editor.value;
+
+        // Find the start of the current line
+        let lineStart = text.lastIndexOf('\n', start - 1) + 1;
+
+        // Insert the prefix
+        editor.value = text.substring(0, lineStart) + prefix + text.substring(lineStart);
+
+        // Update cursor position
+        editor.selectionStart = editor.selectionEnd = start + prefix.length;
+        editor.focus();
+
+        // Trigger update
+        this.handleEditorInput(this.activeTabId);
+    }
+
+    // Insert a markdown table
+    insertTable() {
+        const editor = document.getElementById(`editor-${this.activeTabId}`);
+        if (!editor) return;
+
+        const table = '\n| Column 1 | Column 2 | Column 3 |\n' +
+                     '|----------|----------|----------|\n' +
+                     '| Cell 1   | Cell 2   | Cell 3   |\n' +
+                     '| Cell 4   | Cell 5   | Cell 6   |\n';
+
+        const start = editor.selectionStart;
+        editor.value = editor.value.substring(0, start) + table + editor.value.substring(start);
+
+        // Update cursor position
+        editor.selectionStart = editor.selectionEnd = start + table.length;
+        editor.focus();
+
+        // Trigger update
+        this.handleEditorInput(this.activeTabId);
    }
    
    setupFindEvents() {
@@ -559,11 +672,14 @@ class TabManager {
    // File operations
    openFile(filePath, content) {
        let tab = this.tabs.get(this.activeTabId);
-        
+
+        // Handle both forward and back slashes for cross-platform compatibility
+        const fileName = filePath.split(/[\\/]/).pop();
+
        // If current tab is empty and untitled, reuse it
        if (!tab.filePath && !tab.isDirty && tab.content === '') {
            tab.filePath = filePath;
-            tab.title = filePath.split('/').pop();
+            tab.title = fileName;
            tab.content = content;
            tab.originalContent = content;
            tab.isDirty = false;
@@ -572,12 +688,12 @@ class TabManager {
            this.createNewTab();
            tab = this.tabs.get(this.activeTabId);
            tab.filePath = filePath;
-            tab.title = filePath.split('/').pop();
+            tab.title = fileName;
            tab.content = content;
            tab.originalContent = content;
            tab.isDirty = false;
        }
-        
+
        this.restoreTabState(this.activeTabId);
        this.startAutoSave();
        this.addToRecentFiles(filePath);
@@ -601,12 +717,20 @@ let tabManager;
 document.addEventListener('DOMContentLoaded', () => {
    tabManager = new TabManager();

+    // Attach input listener to the initial editor (tab 1)
+    const initialEditor = document.getElementById('editor-1');
+    if (initialEditor) {
+        initialEditor.addEventListener('input', () => {
+            tabManager.handleEditorInput(1);
+        });
+    }
+
    // 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(() => {
        // Auto-save logic for all tabs
@@ -624,7 +748,9 @@ ipcRenderer.on('file-new', () => {
 });

 ipcRenderer.on('file-opened', (event, data) => {
-    tabManager.openFile(data.path, data.content);
+    if (tabManager) {
+        tabManager.openFile(data.path, data.content);
+    }
 });

 ipcRenderer.on('file-save', () => {
@@ -852,6 +978,10 @@ document.addEventListener('DOMContentLoaded', () => {
        const advancedOptions = document.getElementById('advanced-export-options');
        if (e.target.checked) {
            advancedOptions.classList.remove('hidden');
+            // Scroll the advanced options into view after they become visible
+            setTimeout(() => {
+                advancedOptions.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
+            }, 100);
        } else {
            advancedOptions.classList.add('hidden');
        }
@@ -1104,13 +1234,13 @@ if (originalExportConfirm) {
 }

 // IPC event listeners for recent files functionality
-if (window.electronAPI) {
-    window.electronAPI.on('recent-files-cleared', () => {
+ipcRenderer.on('recent-files-cleared', () => {
+    if (tabManager) {
        tabManager.recentFiles = [];
        localStorage.setItem('recentFiles', JSON.stringify([]));
        console.log('Recent files cleared');
-    });
-}
+    }
+});

 // Add math rendering support using KaTeX for enhanced preview
 function initMathSupport() {
@@ -859,8 +859,9 @@ body.theme-github .status-bar {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 600px;
-    max-height: 80vh;
+    max-height: 90vh;
    overflow-y: auto;
+    position: relative;
 }

 .export-dialog-header {
@@ -1437,7 +1438,9 @@ body.theme-github .line-numbers {

 .advanced-options {
    transition: all 0.3s ease;
-    overflow: hidden;
+    overflow: visible;
+    position: relative;
+    z-index: 10;
 }

 .advanced-options.hidden {
@@ -0,0 +1,49 @@
+// Test script to verify export functionality
+const { exec } = require('child_process');
+const fs = require('fs');
+const path = require('path');
+
+console.log('Testing export functionality...');
+
+// Test 1: Check if pandoc is available
+console.log('\n1. Checking Pandoc availability...');
+exec('pandoc --version', (error, stdout, stderr) => {
+  if (error) {
+    console.log('❌ Pandoc not available:', error.message);
+    console.log('✅ Built-in HTML and PDF export should work');
+  } else {
+    console.log('✅ Pandoc is available');
+    console.log('   Version info:', stdout.split('\n')[0]);
+  }
+});
+
+// Test 2: Check if test markdown file exists
+console.log('\n2. Checking test file...');
+const testFile = path.join(__dirname, 'test-export.md');
+if (fs.existsSync(testFile)) {
+  console.log('✅ Test markdown file exists:', testFile);
+  const content = fs.readFileSync(testFile, 'utf8');
+  console.log('   File size:', content.length, 'characters');
+} else {
+  console.log('❌ Test markdown file not found');
+}
+
+// Test 3: Check marked library
+console.log('\n3. Testing marked library...');
+try {
+  const marked = require('marked');
+  const testMarkdown = '# Test\nThis is a **test** markdown.';
+  const html = marked.parse(testMarkdown);
+  console.log('✅ Marked library working');
+  console.log('   Sample output:', html.substring(0, 50) + '...');
+} catch (error) {
+  console.log('❌ Marked library error:', error.message);
+}
+
+console.log('\n✅ Export functionality test completed!');
+console.log('\nHow to test exports:');
+console.log('1. Open the application');
+console.log('2. Open test-export.md file');
+console.log('3. Try exporting to HTML (should work without Pandoc)');
+console.log('4. Try exporting to PDF (should work without Pandoc)');
+console.log('5. Try exporting to DOCX (requires Pandoc)');
@@ -0,0 +1,26 @@
+# Test Document
+
+This is a test markdown document for export testing.
+
+## Features
+
+- **Bold text**
+- *Italic text*
+- [Links](https://example.com)
+
+## Code Example
+
+```javascript
+function hello() {
+    console.log("Hello World!");
+}
+```
+
+## Table
+
+| Column 1 | Column 2 | Column 3 |
+|----------|----------|----------|
+| Value 1  | Value 2  | Value 3  |
+| Value 4  | Value 5  | Value 6  |
+
+This is a test document to verify export functionality.
@@ -0,0 +1,23 @@
+# Test Document
+
+This is a **test** markdown document.
+
+## Features
+
+- Item 1
+- Item 2
+- Item 3
+
+### Code Example
+
+```javascript
+console.log("Hello World");
+```
+
+> Tqweqweqweqweqweqweqeweqweqweqwe
+dfe
+
+qwe
+qwe
+qwe
+qwe
Author	SHA1	Message	Date
amitwhandClaude	b23e60a704	Fix critical bugs: real-time preview, toolbar functions, and file opening Version 1.5.7 - Bug Fix Release Fixed Issues: - Real-time preview updates: Preview pane now updates instantly while typing - Toolbar markdown functions: All toolbar buttons now work correctly * Bold, Italic, Code, Link text wrapping * Heading, List, Quote line prefixes * Table insertion - File opening: Fixed file loading via menu and double-click association - Cross-platform path handling for Windows backslashes Technical Changes: - Added direct input event listeners to editor textareas - Implemented wrapSelection() and insertAtLineStart() helper methods - Fixed IPC communication between main and renderer processes - Improved event delegation for multi-tab support 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>	2025-10-05 19:56:31 +05:30
amitwh	c559b34f3e	Fix build issues: correct icon file, add icon config, disable signing - Replace corrupted icon.ico with icon-proper.ico - Add missing icon configuration to package.json build settings - Disable signAndEditExecutable to avoid signing certificate requirement - Installer now builds properly at 86MB instead of 190KB	2025-09-22 00:54:17 +05:30
amitwh	a780f2984a	Bump version to 1.5.4 for DOCX export fix release	2025-09-22 00:41:05 +05:30
amitwh	0c9961d412	Fix DOCX export functionality - Enhanced getPandocPath() to check common Windows installation locations - Improved Pandoc path detection for AppData/Local/Pandoc installation - Enhanced error reporting with more detailed feedback for export failures - Added better logging for Pandoc command execution and output - Fixed issue where DOCX exports would fail silently when Pandoc wasn't in PATH - Now properly detects Pandoc in standard Windows installation locations	2025-09-22 00:40:27 +05:30
amitwh	ed7a80f99e	Bump version to 1.5.3 for bug fix release	2025-09-22 00:24:45 +05:30
amitwh	18b7d82610	Fix critical bugs: file loading, advanced export dialog, and XLSX export - Add XLSX export functionality alongside CSV with proper menu option - Fix advanced export dialog visibility with improved CSS and scroll behavior - Verify file loading mechanism works correctly for double-click association - Improve export dialog layout with better height and positioning - Update export-spreadsheet IPC handler to support both CSV and XLSX formats	2025-09-22 00:24:00 +05:30
amitwh	cd1f7ac37d	v1.5.2: Remove custom icons, use default Electron icon - Removed all custom icon references from build configuration - Using default Electron icon for consistent, standard appearance - Updated to version 1.5.2 - Rebuilt NSIS installers with default iconography	2025-09-22 00:03:13 +05:30
amitwh	7b8a94150a	Merge windows branch with enhanced export functionality and CLI support - Combined advanced export options with built-in fallbacks - Integrated Windows context menu installation scripts - Added CLI conversion functionality - Enhanced error handling for pandoc availability - Updated to version 1.5.0 with comprehensive feature set - Resolved merge conflicts preserving all functionality	2025-09-21 23:01:52 +05:30
amitwh	2a12a1b034	Fix export functionality and improve Windows build - Fixed export function issues with comprehensive pandoc detection - Added built-in HTML and PDF export fallbacks (no pandoc required) - Improved error handling with clear user messages - Enhanced code quality with optional chaining and better error handling - Fixed NSIS installer script issues for Windows build - Added comprehensive logging and debugging for export process - Created test files and documentation for export functionality - Successfully builds Windows release with proper XLSX support Resolves export failures and provides robust fallback mechanisms.	2025-09-21 22:56:23 +05:30
amitwh	2bc3989c00	Create GEMINI.md	2025-09-21 21:47:12 +05:30
amitwhandClaude	978e642f0c	Update version to 1.4.0 with context menu integration - Bump version to 1.4.0 for context menu feature release - Add context menu integration to feature list in About dialog - Include command-line interface in feature highlights 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>	2025-09-09 01:05:01 +05:30
amitwhandClaude	00749ac52c	Add Windows Explorer context menu integration - Add context menu entries for all supported file types - Implement CLI interface with --convert and --convert-to commands - Create installation/uninstallation scripts (registry, PowerShell, batch) - Add NSIS installer integration for automatic context menu setup - Support direct conversion from right-click menu - Include comprehensive documentation and usage instructions 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>	2025-09-09 01:03:36 +05:30
amitwh	35310beccf	Add Claude settings	2025-09-01 23:14:36 +05:30
amitwh	e1f0aafa88	Update version to 1.3.3 and add font size adjustment features	2025-09-01 23:13:29 +05:30