Build a QR Code Generator Using Python

Create Your Own QR Codes in Seconds – No Design Skills Needed!

QR codes are everywhere — from restaurant menus to product packaging and even payment apps. But did you know you can create your own QR Code Generator using just a few lines of Python code?

In this blog, you'll learn how to build a QR Code Generator in Python using a powerful library called qrcode. It’s beginner-friendly, fast, and super useful for both fun and professional projects.

🧰 What You Need:

Python installed (Python 3+)
Internet connection
Basic knowledge of Python
Install one simple package: qrcode

📦 Step 1: Install Required Library

Open your terminal or command prompt and run:

bash
pip install qrcode[pil]

🧠 This installs the qrcode library along with Pillow, which helps create images.

🧱 Step 2: Write the Python Code

Create a file called qr_generator.py and paste this code:

python
import qrcode

# Get user input
data = input("Enter the text or URL to generate QR Code: ")

# Create QR Code
qr = qrcode.QRCode(
    version=1,  # size of the QR Code (1 to 40)
    box_size=10,  # size of each box in pixels
    border=5     # thickness of the border
)

qr.add_data(data)
qr.make(fit=True)

# Create and save the image
img = qr.make_image(fill="black", back_color="white")
img.save("my_qrcode.png")

print("✅ QR Code generated and saved as 'my_qrcode.png'")

🧪 Step 3: Run Your Program

Run your script from the terminal:

bash
python qr_generator.py

💬 Enter any text, URL, or data — for example:

arduino
https://www.expertsnippet.com

📁 The QR code image (my_qrcode.png) will be saved in your project folder.

🖼️ Example Output:

You can scan the generated QR Code with any phone to open the embedded link or text.

🚀 Bonus: Generate Colorful QR Codes

Want to customize your QR code colors? Try this:

python
img = qr.make_image(fill_color="blue", back_color="yellow")
img.save("custom_qrcode.png")

🎨 Try different color combinations like red/white, green/black, etc.

🔧 Upgrade Ideas:

Create a GUI using Tkinter
Generate QR Codes in bulk using a CSV file
Build a web version using Flask or Django
Auto-email the QR code to users

✅ Conclusion

With just a few lines of Python code, you've created a fully functional QR Code Generator. It’s a great beginner project that introduces you to:

External libraries
User input
Image generation
File handling

You can use this app for sharing URLs, business cards, app links, Wi-Fi access, and more!

💬 Want a version with a user interface or web deployment guide? Comment below and I’ll help you build it!