PDF Flattener

A VS Code extension that flattens PDF files by removing interactive elements like form fields, annotations, and other dynamic content while preserving the visual appearance.

Features

• Flatten PDF Files: Remove form fields, annotations, and interactive elements
• Context Menu Integration: Right-click on PDF files in the explorer to flatten them
• Command Palette Support: Use PDF Flattener: Flatten PDF command
• Progress Indication: Visual progress feedback during processing
• Automatic Output Naming: Creates filename_flattened.pdf in the same directory
• Cross-platform: Works on Windows, macOS, and Linux

Usage

Method 1: Context Menu (Recommended)

1. Right-click on any PDF file in the VS Code Explorer
2. Select "Flatten PDF" from the context menu
3. Wait for processing to complete
4. The flattened PDF will be saved in the same directory with _flattened suffix

Method 2: Command Palette

1. Open the Command Palette (Ctrl+Shift+P / Cmd+Shift+P)
2. Type "PDF Flattener: Flatten PDF" and press Enter
3. Select the PDF file you want to flatten
4. Wait for processing to complete

What Does "Flattening" Do?

PDF flattening converts a PDF with interactive elements into a static document:

• Form Fields: Text boxes, checkboxes, radio buttons, and dropdowns become static text/graphics
• Annotations: Comments, highlights, and markup become part of the page content
• Interactive Elements: Buttons and links lose their interactive functionality
• Visual Content: All text, images, and formatting are preserved exactly as they appear

Requirements

• VS Code version 1.60.0 or higher
• Node.js (for development)

Installation

From VSIX Package

1. Download the .vsix file
2. Open VS Code
3. Go to Extensions view (Ctrl+Shift+X)
4. Click the "..." menu and select "Install from VSIX..."
5. Select the downloaded .vsix file

From Source

1. Clone this repository
2. Run npm install to install dependencies
3. Run npm run compile to build the extension
4. Press F5 to open a new Extension Development Host window

Development

Building

npm install
npm run compile

Watching for Changes

npm run watch

Testing

1. Open this project in VS Code
2. Press F5 to open Extension Development Host
3. Test the extension in the new window

Technical Details

• PDF Processing: Uses pdf-lib library for reliable PDF manipulation
• File Handling: Native Node.js file system operations
• Error Handling: Comprehensive error handling with user-friendly messages
• Performance: Processes PDFs efficiently with progress indication

Known Limitations

• Very large PDF files may take longer to process
• Some complex PDF structures might not flatten perfectly
• Encrypted PDFs require password removal before flattening

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Test thoroughly
5. Submit a pull request

License

MIT License - see LICENSE file for details

Changelog

1.0.0

• Initial release
• Basic PDF flattening functionality
• Context menu and command palette integration
• Progress indication and error handling