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Convert-pdn-to-ora

This script uses Paint.NET, the OpenRaster export plugin for Paint.NET,
and Python to automatically convert .pdn (Paint.NET) layer files in a folder
and its subfolders to .ora (OpenRaster) format, which can be opened in applications like Krita.

Requirements

To run this script, you will need the following:

  • Windows 11 (can be a virtual machine)
    Paint.NET does not function on Windows 10

  • Paint.NET
    You can install Paint.NET via winget or download it from Paint.NET downloads:

    winget install dotPDN.PaintDotNet

  • Paint.NET OpenRaster Export Plugin
    Download the OpenRaster plugin from Paint.NET OpenRaster Filetype and place it in the Paint.NET filetypes folder.

  • Python 3.8+ (only needed for the .py not .exe)
    Python will be needed to run the script.
    Install Python from python.org.

  • Required Python Packages (only needed for the .py not .exe)
    Install the following packages via pip:

    pip install pyautogui pygetwindow

Download

Visit the releases section to download the latest version of the script.

Setup

  1. Prepare Your Environment
    Close all unnecessary windows to avoid interference with the automation process.

  2. Place and Run the Script
    Place the script file in the folder containing the .pdn files you want to convert.
    The script will process all .pdn files in the folder and subfolders.

  3. Recreate ORA Files Option
    When running the script, it will prompt you whether to recreate .ora files, even if they already exist.
    Select "Yes" to overwrite or "No" to skip existing .ora files.

  4. Delete PDN Files Option
    You will also be prompted to choose whether to delete the .pdn files. Select "Yes" to delete or "No" to keep .pdn files.

  5. Conversion Process
    The script will:

    • Open each .pdn file in Paint.NET
    • Save it as .ora using Paint.NET's Save As functionality
    • Close Paint.NET after each conversion
    • Move on to the next file

  6. Command Line Usage
    You can also run the script from the command line:

    cd "C:\CONVERSION\PATH"
python "C:\PATH\TO\convert_pdn_to_ora.py"

    Or with a specific folder path:

    python "C:\PATH\TO\convert_pdn_to_ora.py" "C:\CONVERSION\PATH"

    Replace "C:\CONVERSION\PATH" and "C:\PATH\TO\convert_pdn_to_ora.py" with the actual paths on your system.

Linux Compatibility

If you want to run this script on Linux,
you will need to use a Windows 11 virtual machine or a Windows installation,
as Paint.NET does not work under Wine.
The .pdn format has not been reverse-engineered for native Linux support.