Convert SVG to CSS in Python

Convert SVG to CSS with Base64 Encoding

When dealing with vector graphics like SVG, converting these files into formats that can be easily embedded, transmitted, or stored is often required. One practical approach is to convert SVG files to CSS format with Base64 encoding. Embedding SVG as Base64 in CSS allows for inline inclusion of vector graphics within stylesheets. This eliminates the need for separate image files and reduces HTTP requests, improving page load times. It also ensures that SVG images are available immediately as part of the stylesheet, enhancing performance and simplifying asset management.

How to convert SVG to CSS in Python

In order to convert SVG to CSS, we use Aspose.SVG for Python via .NET API, which is a feature-rich, powerful, easy-to-use document manipulation API for the Python platform. We consider the example of SVG to Base64 encoding and embedding Base64 string into CSS document:

import base64
import os
from aspose.svg import *

# Create a function to convert SVG to CSS with Base64-encoded SVG data
def convert_svg_to_css(svg_path, css_path, class_name):
    # Load an SVG document
    document = SVGDocument(svg_path)

    # Temporary file path to save the SVG content
    temp_svg_path = "temp_output.svg"

    try:
        # Save the SVG content to a temporary file
        document.save(temp_svg_path)

        # Read the content from the temporary file
        with open(temp_svg_path, "r", encoding="utf-8") as svg_file:
            svg_content = svg_file.read()

        # Encode the SVG content in Base64
        encoded_svg = base64.b64encode(svg_content.encode("utf-8")).decode("utf-8")

        # Prepare the CSS content
        css_content = f""".{class_name} {{
    background-image: url("data:image/svg+xml;base64,{encoded_svg}");
}}
"""

        # Write the CSS content to a file
        with open(css_path, "w", encoding="utf-8") as css_file:
            css_file.write(css_content)

    finally:
        # Clean up the temporary file
        if os.path.exists(temp_svg_path):
            os.remove(temp_svg_path)

# Example usage
input_svg = "image.svg"
output_css = "styles-svg.css"
css_class_name = "background"

convert_svg_to_css(input_svg, output_css, css_class_name)

print(f"SVG file has been converted to CSS and saved as {output_css}.")

Steps to Convert SVG to CSS in Python

1. Use the SVGDocument class to load the SVG content from the specified file path.
2. Save the loaded SVG document to a temporary file. This step facilitates reading the SVG content as a string for encoding.
3. Open the temporary SVG file and read its content into a string.
4. Encode the SVG content to Base64 format for embedding in CSS.
5. Create the CSS content, defining a class with the Base64-encoded SVG, for example, as the background image.
6. Write the generated CSS content to the specified CSS file.
7. Remove the temporary SVG file to ensure no unnecessary files are left on the system.

The CSS content typically includes the MIME type of an image and encoded data, like so:

.class {
    background-image: url("data:image/svg+xml;base64,base64_string...");
}

Online Base64 Encoders

Aspose.SVG offers free online applications for encodind and decoding binary data:

• Base64 Encoders are a set of tools that allow you to encode binary data in various output formats: Plain Base64, JSON, XML, URI, or CSS.
• Image Base64 Decoder converts a data URI containing a Base64 string to an image by pasting a URI string in the input control.

Our browser-based applications work from all platforms, including Windows, Linux, Mac OS, Android and iOS. No registration, plugin or software installation required for you. Start using our online Base64 encoding/decoding tools safely, secure, and easy way!

FAQ

Get Started with Python API

If you want to develop scalable vector graphics and their applications, install our flexible, high-speed Aspose.SVG for Python via .NET API. pip is the easiest way to download and install Aspose.SVG for Python via .NET API. To do this, run the following command:

pip install aspose-svg-net

For more details about Python library installation and system requirements, please refer to Aspose.SVG Documentation.