Bat script/Python code realizes batch conversion of PNG images into JPG images

One: bat script implementation 

Step 1: Create a .txt file

Step 2: Write ren *.png *.jpg in the .txt file

Step 3: Right-click to rename and change the suffix from .txt to .bat

Step 4: Put the file into the folder of the picture to be modified, and then double-click it!

 

PS: If you want to modify all types of files under the folder to jpg format, use  the ren *.* *.jpg command 

Two: Python implementation

code show as below:

import os
from PIL import Image
 
dirname_read="D:/MyDataset/"  # 注意后面的斜杠
dirname_write="D:/MyDataset_jpg/"
names=os.listdir(dirname_read)
count=0
for name in names:
    img=Image.open(dirname_read+name)
    name=name.split(".")
    if name[-1] == "png":
        name[-1] = "jpg"
        name = str.join(".", name)
        to_save_path = dirname_write + name
        img = img.convert('RGB')#RGBA意思是红色，绿色，蓝色，Alpha的色彩空间，Alpha指透明度。而JPG不支持透明度，所以要么丢弃Alpha,要么保存为.png文件
        img.save(to_save_path)
        count+=1
        print(name)
    else:
        continue
print('运行完成！共转换了 %d 张图片' % (count))

Reproduced the original text: Python and bat scripts realize batch conversion of PNG images into JPG images_python png to jpg_una_mattina7's blog-CSDN blog