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前言
很多时候拍的图片都是几百KB 甚至多少M来算的,有时候证件照要求的又很小,作为一个程序员,总不能老是在网上找压缩的吧,而且又麻烦,不如自己用程序跑跑啦
from PIL import Image import os def get_size(file): # 获取文件大小:KB size = os.path.getsize(file) print(size) return size / 1024 def get_outfile(infile, outfile): if outfile: return outfile dir, suffix = os.path.splitext(infile) outfile = '{}-out{}'.format(dir, suffix) return outfile def compress_image(infile, outfile='', mb=19, step=10, quality=80): """不改变图片尺寸压缩到指定大小 :param infile: 压缩源文件 :param outfile: 压缩文件保存地址 :param mb: 压缩目标,KB :param step: 每次调整的压缩比率 :param quality: 初始压缩比率 :return: 压缩文件地址,压缩文件大小 """ o_size = get_size(infile) if o_size <= mb: return infile outfile = get_outfile(infile, outfile) while o_size > mb: im = Image.open(infile) im.save(outfile, quality=quality) if quality - step < 0: break quality -= step o_size = get_size(outfile) return outfile, get_size(outfile) def resize_image(infile, outfile='', x_s=1376): """修改图片尺寸 :param infile: 图片源文件 :param outfile: 重设尺寸文件保存地址 :param x_s: 设置的宽度 :return: """ im = Image.open(infile) x, y = im.size y_s = int(y * x_s / x) out = im.resize((x_s, y_s), Image.ANTIALIAS) outfile = get_outfile(infile, outfile) out.save(outfile) if __name__ == '__main__': compress_image(r'C:/Users/Administrator/Desktop/111.jpg') # resize_image(r'D:\python\test.jpg')
懒得写太详细注释了,不懂可以问噢,后续会把不懂的放上来,或者优化代码
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