PNG Metadata Editor v1.0.0

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

Run the application:
```
python png-meta-editor.py
```
Open a PNG file using the "Open PNG File" button
View metadata in the tree view on the left
Select a field to see its full value in the detail pane
Use the buttons to add, edit, or delete fields

Building for Distribution

Mac OS (using py2app)

First install the required build tools:
```
pip install py2app
```
Build the application bundle:
```
python setup.py py2app
```
The resulting .app bundle will be in the dist/ directory

Windows (using PyInstaller)

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

Linux (using PyInstaller)

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

License

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

Author

Robert Tusa [Your Contact Information]

Version History

1.0.0 (2026-01-05): Initial release

1.7 KiB Raw Blame History