How to Convert JPG to ICO Using Python

Converting a JPG image to an ICO (icon) file is a common task, especially for developers who need favicons or application icons. Python makes this process simple with the right libraries. In this guide, we'll use the Pillow module, one of the most popular Python libraries for image processing.

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Prerequisites

Before we begin, ensure you have the following:

• Python installed on your system (preferably Python 3.6 or later).
• The Pillow library installed. If not, install it using:

pip install Pillow

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Step-by-Step Conversion Process

Step 1: Import the Required Module

First, import the Image class from the PIL (Pillow) module:

from PIL import Image

Step 2: Load the JPG Image

Open the JPG file you want to convert:

img = Image.open('input.jpg')

Step 3: Convert and Save as ICO

ICO files typically support multiple sizes (e.g., 16x16, 32x32, 48x48). You can specify these sizes while saving:

img.save('output.ico', sizes=[(16, 16), (32, 32), (48, 48)])

If you want a single size, use:

img.save('output.ico', sizes=[(32, 32)])

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Complete Python Script

Here’s the full script to convert JPG to ICO:

from PIL import Image

# Load the JPG image
img = Image.open('input.jpg')

# Save as ICO with multiple sizes
img.save('output.ico', sizes=[(16, 16), (32, 32), (48, 48)])

print("Conversion successful!")

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Tips for Best Results

• Use a square image (e.g., 256x256 pixels) for the best ICO output.
• If your image isn’t square, resize it first to avoid distortion.
• For transparency, use PNG instead of JPG before converting to ICO.

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SEO Summary: Learn how to convert JPG to ICO using Python and the Pillow library. This guide provides a step-by-step method with code examples for easy implementation.

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