python 批量压缩图片的脚本_Python

python 批量压缩图片的脚本

2021-11-19 13:54Mario-Hero Python

用Python编写的批量压缩图片的脚本，可以自定义压缩质量，有批量图片压缩需求的朋友可以直接拿来用

简介

用python批量压缩图片，把文件夹或图片直接拖入即可

需要 needs

python 3

pillow (用pip install pillow来安装即可)

用法 usage

把文件夹或图片直接拖入即可。如果拖入的是文件夹，则会遍历子文件夹把所有图片都压缩了。

注意，压缩后的文件会直接替换原来的文件，文件名不变，尺寸不变，只改变压缩质量。

文件的开头有两个变量：

size_cut = 4 表示大于4mb的图片都会进行压缩

quality = 90 表示压缩质量90，这个质量基本人眼是看不出来啥差距的，而且很多原先10m的图能压缩一半。80以下的质量大概就不太行了。

代码

				?

									#!/usr/bin/python3

									# -*- coding: utf-8 -*-

									# created by mario chen, 01.04.2021, shenzhen

									# my github site: https://github.com/mario-hero

									import sys

									import os

									from pil import image

									size_cut = 4   # picture over this size should be compressed. units: mb

									quality = 90  # 90 is good, this number should not be smaller than 80.

									def ispic(name):

									    namelower = name.lower()

									    return namelower.endswith("jpeg") or namelower.endswith("jpg") or namelower.endswith("png")

									def compressimg(file):

									    #print("the size of", file, "is: ", os.path.getsize(file))

									    im = image.open(file)

									    im.save(file, quality=quality)

									def compress(folder):

									    try:

									        if os.path.isdir(folder):

									            print(folder)

									            file_list = os.listdir(folder)

									            for file in file_list:

									                if os.path.isdir(folder+"/"+file):

									                    #print(folder +"/"+ file)

									                    compress(folder +"/"+file)

									                else:

									                    if ispic(file):

									                        if os.path.getsize(folder + "/" + file) > (size_cut * 1024 * 1024):

									                            compressimg(folder + "/" + file)

									                            print(file)

									        else:

									            if ispic(folder):

									                if os.path.getsize(folder) > (size_cut * 1024 * 1024):

									                    compressimg(folder)

									    except baseexception:

									        return

									if __name__ == '__main__':

									    for folder in sys.argv:

									        #print(folder)

									        compress(folder)

									    print("finish.")

									    #os.system("pause")

实现效果

python 批量压缩图片的脚本

压缩后大小

python 批量压缩图片的脚本

另外一种图片压缩实现方式

同样自动遍历目录下的图片

				?

									import os

									from pil import image

									import threading,time

									def imgtoprogressive(path):

									    if not path.split('.')[-1:][0] in ['png','jpg','jpeg']:  #if path isn't a image file,return

									        return

									    if os.path.isdir(path):

									        return

									##########transform img to progressive

									    img = image.open(path)

									    destination = path.split('.')[:-1][0]+'_destination.'+path.split('.')[-1:][0]

									    try:

									        print(path.split('\\')[-1:][0],'开始转换图片')

									        img.save(destination, "jpeg", quality=80, optimize=true, progressive=true) #转换就是直接另存为

									        print(path.split('\\')[-1:][0],'转换完毕')

									    except ioerror:

									        pil.imagefile.maxblock = img.size[0] * img.size[1]

									        img.save(destination, "jpeg", quality=80, optimize=true, progressive=true)

									        print(path.split('\\')[-1:][0],'转换完毕')

									    print('开始重命名文件')

									    os.remove(path)

									    os.rename(destination,path)

									for d,_,fl in os.walk(os.getcwd()):    #遍历目录下所有文件

									    for f in fl:

									        try:

									            imgtoprogressive(d+'\\'+f)

									        except:

									            pass