Python implements svg image conversion to png and gif

Implement code

import cairosvg
import imageio
from PIL import Image
import io
import os


def svg_to_png(svg_path, png_path):
    try:
        cairosvg.svg2png(url=svg_path, write_to=png_path)
        print(f"Successfully {svg_path} Convert to {png_path}")
    except Exception as e:
        print(f"Convert to PNG An error occurred while: {e}")


def svg_to_gif(svg_path, gif_path):
    try:
        # Convert SVG to PNG image        png_bytes = cairosvg.svg2png(url=svg_path)
        image = ((png_bytes))

        # Save PNG image as GIF        (gif_path, save_all=True, append_images=[image], duration=100, loop=0)
        print(f"Successfully {svg_path} Convert to {gif_path}")
    except Exception as e:
        print(f"Convert to GIF An error occurred while: {e}")


if __name__ == "__main__":
    current_directory = ()
    input_directory = current_directory#(current_directory, 'input_svgs')
    output_directory = (current_directory, 'output_images')

    if not (output_directory):
        (output_directory)

    for filename in (input_directory):
        if ('.svg'):
            svg_file = (input_directory, filename)
            base_name = (filename)[0]
            png_file = (output_directory, f'{base_name}.png')
            gif_file = (output_directory, f'{base_name}.gif')

            svg_to_png(svg_file, png_file)
            svg_to_gif(svg_file, gif_file)

Python implements mutual conversion between image formats

1. Summary

Pictures generally have multiple formats, and common picture formats include:

JPEG (.jpg or .jpeg): A widely used lossy compression format suitable for photographic images and pictures on web pages.
PNG (.png): A lossless compression format that supports transparency and better image quality, often used in icons, graphics and pictures that require transparent backgrounds. The picture is 4 channels, plus a transparent channel. Like screenshot
GIF (.gif): A format that supports animation and transparency, often used for simple animations and icons.
BMP (.bmp): A lossless format that stores raw data of images, and is usually large in file size, and is often used for bitmap processing and printing.
TIFF (.tiff or .tif): A high-quality lossless format that supports multiple pages and multiple image depths, often used in printing and publishing.

In addition to these common formats, there are some other image formats, such as WebP, SVG, etc. Each format has its own specific uses and advantages and disadvantages.

The conversion between picture formats involves the conversion of the number of channels and formats, and the conversion without dimensions

2. Specific code

from PIL import Image
 
def convert_image(input_path, output_path, output_format):
    # Open the original image    image = (input_path)
 
    # Get image format    img_format = 
   # Get the number of channels    channels = 
    # Get the size    width, height = 
 
    # Convert JPG image to RGB mode (if the image is not RGB mode)    if  != "RGB":
        image = ("RGB")
    # Save the image to the specified format    (output_path, format=output_format)
    
    # print(f'Epoch: {best_epoch}, Fold: {best_fold}')
    print(f'Enter picture format:{img_format}, Number of channels to enter the picture: {channels}, Enter the size of the picture: {(width,height)}')
    print("The conversion is complete!")
    print(f'Output picture format:{output_image_format}, Number of channels for output pictures: {}, The size of the output image: {(width,height)}')
 
# Set the input image pathinput_image_path = ""
 
# Set the output image path and formatoutput_image_path = ""
output_image_format = "PNG"
 
# Convert image formatconvert_image(input_image_path, output_image_path, output_image_format)

Extension: Python-based image format conversion tool

introduce

This tutorial will guide you how to use ImaCon_ter.py, a picture format conversion tool written in Python, which is able to convert images from one format to another. Supported formats include: eps, jpeg, jpg, pdf, pgf, png, png, ps, raw, rgba, svg, svgz, tif, tiff.

Installation dependencies

Before using the tools, make sure matplotlib is installed. You can use the following command to install:

pip install matplotlib

Tool code

Here is the ImaCon_ter.py code:

# version 1.2
# This software is to convert images to other formats.
# Contact: PersusXie@ if in doubt

import sys
import  as plt
import os

class ImageConverter:
    def __init__(self, filename, new_format="png"):
        '''
        Initialize the class and call the conversion method
        '''
         = filename
        self.new_format = new_format
        ()

    def convert(self):
        '''
        Convert the image to the specified format.
        Supported formats: eps, jpeg, jpg, pdf, pgf, png, ps, raw, rgba, svg, svgz, tif, tiff
        '''
        if not ():
            print(f"Error: {} not found in the specified path.")
            return
        
        old_format = (".")[-1]
        if self.new_format == old_format:
            print("The input format is the same as the output format. No conversion needed.")
            return

        supported_formats = ['eps', 'jpeg', 'jpg', 'pdf', 'pgf', 'png', 'ps', 'raw', 'rgba', 'svg', 'svgz', 'tif', 'tiff']
        if self.new_format not in supported_formats:
            print(f"This format is not supported. Supported formats are: {', '.join(supported_formats)}")
            return

        img = ()
        height, width = [:2]
        dpi = 100

        fig = (figsize=(width / dpi, height / dpi), dpi=dpi)
        (img)
        ('off')
        
        new_filename = f"{()[0]}.{self.new_format}"
        (new_filename, format=self.new_format)
        print(f"The new file has been created: {new_filename}")
        ()

def display_help():
    '''
    Display the help message
    '''
    print("Usage: python ImaCon_ter.py <filename> <new_format>")
    print("Example: python ImaCon_ter.py  svg")
    print("Supported formats: eps, jpeg, jpg, pdf, pgf, png, ps, raw, rgba, svg, svgz, tif, tiff")
    print("Use -h or --help for this help message.")

def main():
    argvs = 
    if len(argvs) != 3 or argvs[1] in ["-h", "--help"]:
        display_help()
        return
    
    filename = argvs[1]
    new_format = argvs[2]
    ImageConverter(filename, new_format)

if __name__ == "__main__":
    main()

How to use

Save script: Save the above code as an ImaCon_ter.py file.

Open Terminal: Navigate to the directory where the script is saved in the terminal.

Run the tool: Run the script using the following format:

python ImaCon_ter.py <filename> <new_format>

For example, convert to svg format:

python ImaCon_ter.py  svg

View result: After the conversion is completed, the new picture file will be in the same directory as the original file, and the file name format is <original file name>.<new format>.

Things to note

Make sure that the path to the input file is correct and that the file format supports conversion.

The supported output formats are: eps, jpeg, jpg, pdf, pgf, png, png, ps, raw, rgba, svg, svgz, tif, tiff.

If you encounter any problems, you can view the error message, make sure the input is correct, and refer to the supported format list.

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