python实现svg图片转换为png和gif

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"成功将 {svg_path} 转换为 {png_path}")
    except Exception as e:
        print(f"转换为 PNG 时出错: {e}")


def svg_to_gif(svg_path, gif_path):
    try:
        # 将 SVG 转换为 PNG 图像
        png_bytes = cairosvg.svg2png(url=svg_path)
        image = Image.open(io.BytesIO(png_bytes))

        # 将 PNG 图像保存为 GIF
        image.save(gif_path, save_all=True, append_images=[image], duration=100, loop=0)
        print(f"成功将 {svg_path} 转换为 {gif_path}")
    except Exception as e:
        print(f"转换为 GIF 时出错: {e}")


if __name__ == "__main__":
    current_directory = os.getcwd()
    input_directory = current_directory#os.path.join(current_directory, 'input_svgs')
    output_directory = os.path.join(current_directory, 'output_images')

    if not os.path.exists(output_directory):
        os.makedirs(output_directory)

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

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

from PIL import Image
 
def convert_image(input_path, output_path, output_format):
    # 打开原始图片
    image = Image.open(input_path)
 
    # 获取图片格式
    img_format = image.format
   # 获取通道数
    channels = image.mode
    # 获取尺寸
    width, height = image.size
 
    # 将JPG图片转换为RGB模式（如果图片不是RGB模式）
    if image.mode != "RGB":
        image = image.convert("RGB")
    # 将图片保存为指定格式
    image.save(output_path, format=output_format)
    
    # print(f'Epoch: {best_epoch}, Fold: {best_fold}')
    print(f'输入图片格python式:{img_format}, 输入图片的通道数: {channels}, 输入图片的尺寸: {(width,height)}')
    print("转换完成!")
    print(f'输出图片格式:{output_image_format}, 输出图片的通道数: {image.mode}, 输出图片的尺寸: {(width,height)}')
 
# 设置输入图片路径
input_image_path = "example.jpg"
 
# 设置输出图片路径和格式
output_image_path = "output.png"
output_image_format = "PNG"
 
# 进行图片格式转换
convert_image(input_image_path, output_image_path, output_image_format)

pip install matplotlib

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

import sys
import matplotlib.pyplot as plt
import os

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

    def convert(self):
        '''
        Convert the image to the specified format.
        Supported formats: eps, jpeg, jpg, pdf, pgandroidf, png, ps, raw, rgba, svg, svgz, tif, tiff
        '''
        if not os.path.isfile(self.filename):
            print(f"Error: {self.filename} not found in the specified path.")
            return
        
        old_format = self.filename.split(".")[-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 = plt.imread(self.filename)
        height, width = img.shape[:2]
        dpi = 100

        fig = plt.figure(figsize=(width / dpi, height / dpi), dpi=dpi)
        plt.imshow(img)
        plt.axis('off')
        
        new_filename = f"{os.path.splitext(self.filename)[0]}.{self.new_format}"
        plt.savefig(new_filename, format=self.new_format)
        print(f"The new file has been created: {new_filename}")
        plt.close()

def display_help():
    '''
    Display the help message
    http://www.chinasem.cn'''
    print("Usage: python ImaCon_ter.py <filename> <new_format>")
    print("Example: python ImaCon_ter.py image.png 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 = sys.argv
    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()

python ImaCon_ter.py <filename> <new_format>

python ImaCon_ter.py image.png svg