QR Code Utility

A Python command-line utility to create and read QR codes.

Setup

1. Activate the virtual environment:

   source venv/bin/activate

2. Installed libraries:

   • qrcode[pil] - For creating QR codes
   • opencv-python - For reading/decoding QR codes and image processing
   • pillow - Image handling

Usage

Create a QR Code

python qr_utility.py create <text_or_url> [output_file]

Examples:

# Create QR code with default name (qrcode.png)
python qr_utility.py create https://www.github.com

# Create QR code with custom name
python qr_utility.py create https://www.example.com my_qr.png

# Create QR code with text
python qr_utility.py create "Hello, World!" greeting.png

Read a QR Code

python qr_utility.py read <image_file>

Examples:

# Read QR code from image
python qr_utility.py read qrcode.png

# Read QR code from custom file
python qr_utility.py read my_qr.png

Features

• ✅ Generate QR codes from URLs or text
• ✅ Save QR codes as PNG images
• ✅ Read and decode QR codes from images
• ✅ Automatically detect URLs in QR codes
• ✅ Support for multiple QR codes in a single image

Requirements

• Python 3.14
• Virtual environment (venv)