Customizable QR Code Generator

A simple web interface to generate customizable QR Codes in real time. Built with Python, Flask, qrcode, and Pillow.

📸 Example QR Code

📦 Technologies

• Python 3.7+
• Flask: lightweight web framework
• qrcode: library for QR Code generation
• Pillow: image processing library (for logo insertion)

🚀 Features

• Generate a QR Code from any text or URL
• Real-time customization of:
  • Foreground color
  • Background color
  • Module (box) size
  • Border width
  • Error correction level (L, M, Q, H)
  • Optional centered PNG logo
• Instant preview via web interface

🛠️ How It Was Built (Summary)

1. qr_code_generator.py: Encapsulates the logic for creating QR Code images with customizable parameters and an optional logo.
2. app.py: Flask server that serves an HTML page with a form and preview. Handles AJAX requests and uses the QR generator module to produce images on the fly.
3. HTML + JavaScript: Provides input fields, color pickers, file upload for the logo, and an asynchronous fetch call to update the QR Code without reloading the page.

📋 Prerequisites

• Git
• Python 3.7 or higher
• pip (Python package manager)

⚙️ Installation & Usage

1. Clone the repository

   git clone https://github.com/your-username/qr-code-generator-customizable.git
   cd qr-code-generator-customizable

2. Create a virtual environment (optional but recommended)

   python -m venv venv
   source venv/bin/activate    # Linux/macOS
   venv\Scripts\activate     # Windows

3. Install dependencies

   pip install -r requirements.txt

   If you don’t have a requirements.txt, simply run:

   pip install flask qrcode pillow

4. Run the server

   python app.py

5. Open in your browser Navigate to http://localhost:5000 to start generating QR Codes.

📁 Project Structure

├── app.py                 # Flask server and web interface
├── qr_code_generator.py   # Core QR Code generation logic
├── requirements.txt       # (optional) dependency list
└── README.md              # This documentation file

Application Page

📄 License

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