QR Code Generation

I put together a quick program that creates a “fancy” QR code to a specified URL with the specified color and drops the desired “logo” file into the center of the code.

import qrcode
from PIL import Image

def generate_qr_code_with_custom_color_and_logo():
    url = input("Please enter the URL for which you want to generate a QR code: ")

    rgb_input = input("Please enter the RGB values for the QR code color (e.g. 0,0,0 for black): ")
    
    try:
        rgb_color = tuple(map(int, rgb_input.split(',')))
        if len(rgb_color) != 3 or not all(0 <= n <= 255 for n in rgb_color):
            raise ValueError("Invalid RGB color value.")
    except Exception:
        print("Error parsing RGB values. Please make sure to enter three integers separated by commas.")
        return

    qr = qrcode.QRCode(
        version=1,  # controls the size of the QR Code
        error_correction=qrcode.constants.ERROR_CORRECT_H,  # high error correction for image insertion
        box_size=10,
        border=4,
    )
    qr.add_data(url)
    qr.make(fit=True)

    # Generate the QR code with the specified RGB color
    img = qr.make_image(fill_color=rgb_color, back_color="white")

    # Load the logo image
    logo_image_path = input("Please enter the logo for the center of this QR code: ")

    try:
        logo = Image.open(logo_image_path)
    except FileNotFoundError:
        print(f"Logo image file '{logo_image_path}' not found. Proceeding without a logo.")
        img.save("qr_code_with_custom_color.png")
        print("QR code has been generated and saved as 'qr_code_with_custom_color.png'.")
        return

    # Resize the logo image to fit in the QR code
    img_width, img_height = img.size
    logo_size = int(img_width * 0.2)  # The logo will take up 20% of the QR code width
    logo = logo.resize((logo_size, logo_size), Image.ANTIALIAS)

    position = ((img_width - logo_size) // 2, (img_height - logo_size) // 2)

    img.paste(logo, position, mask=logo.convert("RGBA"))

    img.save("qr_code_with_custom_color_and_logo.png")

    print("QR code with a custom color and a logo image has been generated and saved as 'qr_code_with_custom_color_and_logo.png'.")

if __name__ == "__main__":
    generate_qr_code_with_custom_color_and_logo()

Voila!

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