How to Build a QR Code Generator in Django (Step-by-Step Guide)

Source: Dev.to

Introduction

QR codes are widely used for payments, marketing campaigns, Wi‑Fi sharing, and WhatsApp links. In this tutorial we’ll build a simple QR‑code generator using Django and Python.

Installation

pip install qrcode[pil]

View

Create a view in your Django app:

import qrcode
from django.http import HttpResponse
from io import BytesIO

def generate_qr(request):
    data = request.GET.get("data", "Hello World")

    qr = qrcode.make(data)
    buffer = BytesIO()
    qr.save(buffer, format="PNG")

    return HttpResponse(buffer.getvalue(), content_type="image/png")

You can now access the generator at:

http://localhost:8000/generate_qr/?data=Hello

The QR code will be generated dynamically.

URL Configuration

Add the view to urls.py:

from django.urls import path
from .views import generate_qr

urlpatterns = [
    path("generate_qr/", generate_qr),
]

Extending the Project

You can support additional QR‑code types, such as:

• Wi‑Fi QR codes
• WhatsApp QR codes
• Email QR codes
• vCard contact QR codes
• Custom colors
• Logos inside QR codes

Example: Generating a WhatsApp QR code

phone_number = "1234567890"
data = f"https://wa.me/{phone_number}"

Deployment Considerations

• Add caching for performance
• Implement rate limiting
• Optimize SEO for each QR type
• Add multilingual support
• Create a frontend interface

Production Example

A production‑ready example with multilingual support and multiple QR formats is available at:
fastools.online/en

Use Cases

• SaaS tool
• Marketing utility
• Developer tool
• Multilingual QR platform

Conclusion

Building a QR‑code generator in Django is simple and scalable. Django’s flexibility makes it easy to turn this project into a powerful tool for various applications.

Happy coding!