PNG Metadata Editor

A graphical tool for viewing and editing metadata in PNG files.

Features

• View all metadata fields (tEXt, zTXt, iTXt chunks) in PNG files
• Add, edit, and delete metadata fields
• Pretty-print JSON-formatted values
• Copy metadata values to clipboard
• Visual indication of unsaved changes

Installation

Prerequisites

• Python 3.6+
• Tkinter (usually included with Python)

Dependencies

Install required packages using pip:

pip install pillow pngmeta

Usage

1. Run the application:

   python png-meta-editor.py
   

2. Open a PNG file using the "Open PNG File" button

3. View metadata in the tree view on the left

4. Select a field to see its full value in the detail pane

5. Use the buttons to add, edit, or delete fields

Building for Distribution

To create a standalone executable:

pyinstaller --name="PNG Metadata Editor" \
            --windowed \
            --onefile \
            --icon=AppIcon.icns \
            png-meta-editor.py

The resulting executable will be in the dist/ directory.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Author

Robert Tusa [Your Contact Information]

Version History

• 2023-10-01: Initial release