# How to Create Custom QR Codes Using Python

QR codes have become ubiquitous, appearing on everything from business cards to product packaging. These square-shaped patterns can encode a variety of data types, making them an excellent tool for sharing information quickly and easily. With Python, you can create custom QR codes tailored to your specific needs. In this tutorial, we’ll walk through the process of generating QR codes, customizing their appearance, and even embedding logos or images to make them stand out.

**What You’ll Learn:**

* Creating basic QR codes with Python.
    
* Customizing QR code appearance (colors, shapes).
    
* Embedding logos or images into QR codes.
    
* Saving QR codes in different formats (PNG, SVG).
    
* Practical applications for custom QR codes.
    

### **1\. Setting Up the Environment**

First, ensure Python is installed on your machine. We'll need the following libraries:

```bash
pip install qrcode[pil] pillow
```

**Library Overview:**

* `qrcode`: Generates QR codes with customizable options.
    
* `Pillow`: Enhances the QR code by adding colors, images, and other customizations.
    

### **2\. Creating a Basic QR Code**

**Step 1: Generating a Simple QR Code**

We’ll start by generating a basic QR code that encodes a URL.

```python
import qrcode

def generate_basic_qr(data, filename="qrcode.png"):
    qr = qrcode.QRCode(
        version=1,  # controls the size of the QR code
        error_correction=qrcode.constants.ERROR_CORRECT_H,  # allows error correction up to 30%
        box_size=10,  # controls how many pixels each “box” of the QR code is
        border=4,  # the number of boxes thick the border should be
    )
    qr.add_data(data)
    qr.make(fit=True)

    img = qr.make_image(fill='black', back_color='white')
    img.save(filename)

# Example usage
generate_basic_qr("https://www.bytescrum.com")
```

### **3\. Customizing the QR Code Appearance**

**Step 2: Changing Colors**

We can customize the QR code's appearance by changing the foreground (QR pattern) and background colors.

```python
import qrcode

def generate_colored_qr(data, filename="colored_qrcode.png"):
    qr = qrcode.QRCode(
        version=1,
        error_correction=qrcode.constants.ERROR_CORRECT_H,
        box_size=10,
        border=4,
    )
    qr.add_data(data)
    qr.make(fit=True)

    img = qr.make_image(fill_color="darkblue", back_color="lightyellow")
    img.save(filename)

# Example usage
generate_colored_qr("https://www.bytescrum.com")
```

**Step 3: Adding Rounded Corners and Styling**

For a more sophisticated look, we can add rounded corners to the QR code’s modules.

```python
import qrcode
from PIL import Image, ImageDraw


def generate_styled_qr(data, filename="styled_qrcode.png"):
    qr = qrcode.QRCode(
        version=1,
        error_correction=qrcode.constants.ERROR_CORRECT_H,
        box_size=10,
        border=4,
    )
    qr.add_data(data)
    qr.make(fit=True)

    img = qr.make_image(fill_color="black", back_color="white").convert('RGB')

    # Create a mask with rounded corners
    mask = Image.new("L", img.size, 0)
    draw = ImageDraw.Draw(mask)
    radius = 15  # Adjust as needed for rounded corners
    draw.rounded_rectangle((0, 0, img.size[0], img.size[1]), radius, fill=255)

    # Apply the rounded mask to the image
    img = Image.composite(img, Image.new("RGB", img.size, "white"), mask)

    img.save(filename)


# Example usage
generate_styled_qr("https://www.bytescrum.com")
```

### **4\. Embedding Logos in QR Codes**

**Step 4: Adding a Logo or Image**

To make your QR code unique, you can embed a logo or an image in the center of the QR code.

```python
import qrcode
from PIL import Image

def generate_qr_with_logo(data, logo_path, filename="qr_with_logo.png"):
    qr = qrcode.QRCode(
        version=1,
        error_correction=qrcode.constants.ERROR_CORRECT_H,
        box_size=10,
        border=4,
    )
    qr.add_data(data)
    qr.make(fit=True)

    img = qr.make_image(fill_color="black", back_color="white").convert('RGB')

    logo = Image.open(logo_path)
    logo = logo.resize((50, 50))

    pos = ((img.size[0] - logo.size[0]) // 2, (img.size[1] - logo.size[1]) // 2)
    img.paste(logo, pos)

    img.save(filename)

# Example usage
generate_qr_with_logo("https://www.bytescrum.com", "logo.png")
```

### **5\. Saving QR Codes in Different Formats**

**Step 5: Exporting QR Codes as SVG or PNG**

You can save the generated QR code in different formats, including SVG for scalable vector graphics.

```python
import qrcode

def save_qr_as_svg(data, filename="qrcode.svg"):
    qr = qrcode.QRCode(
        version=1,
        error_correction=qrcode.constants.ERROR_CORRECT_H,
        box_size=10,
        border=4,
    )
    qr.add_data(data)
    qr.make(fit=True)

    img = qr.make_image(fill_color="black", back_color="white", image_format='SVG')
    img.save(filename)

# Example usage
save_qr_as_svg("https://www.bytescrum.com")
```

### **6\. Practical Applications of Custom QR Codes**

**Step 6: Using QR Codes in Real Life**

Here are some practical applications for the custom QR codes you’ve created:

* **Business Cards**: Embed your contact information in a QR code on your business card.
    
* **Marketing**: Use QR codes in flyers and posters to link directly to your website or promotions.
    
* **Event Tickets**: Generate QR codes for event tickets, which can be scanned at entry.
    
* **Wi-Fi Sharing**: Create a QR code to share Wi-Fi credentials, allowing users to connect easily.
    

<details data-node-type="hn-details-summary"><summary>Conclusion</summary><div data-type="detailsContent">In this tutorial, we’ve explored how to generate custom QR codes using Python. We covered everything from creating basic QR codes to embedding logos and exporting them in various formats. With these skills, you can create unique, visually appealing QR codes that serve a wide range of practical purposes. Whether you’re looking to share information, promote a business, or add a touch of personalization to your projects, custom QR codes offer a versatile solution.</div></details>

Feel free to expand on this project by exploring more customization options or integrating QR code generation into larger Python applications.