PCRT (PNG Check & Repair Tool) - Python 3 Version

A modernized, Python 3 compatible version of the original PCRT (PNG Check & Repair Tool).

Acknowledgment

This project is a port and enhancement of the original tool by sherlly. Full credit for the original concept and features goes to the original repository.

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Key Features

• ✅ Fix common PNG errors (Header, IHDR/IDAT CRCs, IEND chunk).
• ✅ Display detailed image metadata.
• ✅ Extract data appended after the IEND chunk.
• ✅ Inject text payloads into image chunks (steganography).
• ✅ Decompress raw image data and bruteforce dimensions.
• ✅ Automatically preview the repaired image.

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Installation

1. Clone the repository:

   git clone [https://github.com/coderustypro/PCRT-Python3.git](https://github.com/coderustypro/PCRT-Python3.git)
   cd PCRT-Python3

2. Run the tool: The script requires the Pillow library. If it fails, run pip install Pillow.

   python3 PCRT.py --help

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Usage

Check and repair a broken image:

python3 PCRT.py -i secret_image.png

Example: Before & After Repair

Here is an example of a corrupted image (secret_image.png) being repaired into output.png.

Before (Corrupt)	After (Repaired)