批量修改图片大小好像用PS也可以，不过我不会，程序猿就用程序来解决。
这段时间学了下Python，很强大，之前一些不知道怎么处理的东西在Python里面都能找到解决方法。

工具界面如下图

这个工具需要用到第三方库 Pillow 和 Pyqt5，可通过命令行安装。

pip install pillowpip install pyqt5

代码：

#!-*-coding:utf-8-*-from PIL import Imageimport hashlib, os, sysfrom PyQt5.QtGui import QFont, QIconfrom PyQt5.QtWidgets import (QFileDialog, QMessageBox, QGridLayout, QLineEdit, QTextEdit, QLabel, QWidget, QToolTip, QPushButton, QApplication, QInputDialog)from PyQt5.QtCore import QCoreApplicationdef makedir(path): if not os.path.exists(path): os.mkdir(path)def image_resize(image_path, scale): #获得新文件名称 out_path = os.path.splitext(image_path)[0] + "_after" + os.path.splitext(image_path)[-1] with Image.open( image_path ) as im: width = int(im.size[0]*scale) height = int(im.size[1]*scale) #resize 设置新尺寸 out = im.resize( (width, height) ) out.save(out_path)def folder_resize(folder_path, scale): dst_files = [] files = os.listdir( folder_path ) for file in files: ext = os.path.splitext(file)[-1] #只支持jpg或png文件 if ext == ".jpg" or ext == ".png": dst_files.append(file) #输出路径 out_folder = os.path.join(folder_path, "after") makedir(out_folder) for item in dst_files: try: op = os.path.join( out_folder, item ) with Image.open( os.path.join(folder_path, item) ) as im: width = int(im.size[0]*scale) height = int(im.size[1]*scale) out = im.resize( (width, height) ) out.save(op) except FileNotFoundError: print("file not found " + item)class MainBody(QWidget): def __init__(self): super(MainBody, self).__init__() self.init() self.m_scale = 1.0 self.m_width = 0 self.m_height = 0 def init(self): grid = QGridLayout() self.setLayout(grid) grid.setSpacing(10) self.m_tedit = QTextEdit() self.m_tedit.setToolTip( u'可以拖拽文件到这里来' ) grid.addWidget(self.m_tedit, 1, 0, 4, 3) self.m_scale_set_btn = QPushButton( u"设置缩放值" ) self.m_scale_set_btn.clicked.connect( self.set_scale_func ) grid.addWidget( self.m_scale_set_btn, 1, 3 ) self.m_scale_label = QLabel( "1.0" ) grid.addWidget( self.m_scale_label, 2, 3 ) self.m_height_set_btn = QPushButton( u"设置高度" ) self.m_height_set_btn.clicked.connect( self.set_height_func ) grid.addWidget( self.m_height_set_btn, 3, 3 ) self.m_height_label = QLabel( "0" ) grid.addWidget( self.m_height_label, 4, 3 ) self.m_width_set_btn = QPushButton( u"设置宽度" ) self.m_width_set_btn.clicked.connect( self.set_width_func ) grid.addWidget( self.m_width_set_btn, 5, 3 ) self.m_width_label = QLabel( "0" ) grid.addWidget( self.m_width_label, 6, 3 ) self.m_file_btn = QPushButton(u'选择文件') self.m_file_btn.clicked.connect( self.file_func ) self.m_folder_btn = QPushButton(u'选择文件夹') self.m_folder_btn.clicked.connect( self.folder_func ) self.m_generate_btn = QPushButton(u'处理') self.m_generate_btn.clicked.connect( self.generate_func ) self.m_clear_btn = QPushButton(u'清空') self.m_clear_btn.clicked.connect( self.clear_func ) grid.addWidget(self.m_file_btn, 5, 0) grid.addWidget(self.m_folder_btn, 5, 1) grid.addWidget(self.m_generate_btn, 6, 0) grid.addWidget(self.m_clear_btn, 6, 1) self.setGeometry(300,300,300,200) self.setWindowTitle(u"批量图片缩放") self.setWindowIcon(QIcon('icon.png')) self.show() #按照输入的缩放值进行缩放 def set_scale_func(self): text, ok = QInputDialog.getText( self, 'Input Scale', u'输入缩放值' ) if ok: try: scale = float( text ) except ValueError: QMessageBox.warning( self, u"设置缩放值", u"输入错误" ) else: self.m_scale = scale self.refresh_setting(0) #根据高度的缩放比例等比例缩放 def set_height_func(self): text, ok = QInputDialog.getText( self, 'Input Height', u'输入高度' ) if ok: try: height = int( text ) except ValueError: QMessageBox.warning( self, u"设置高度", u"输入错误" ) else: self.m_height = height self.refresh_setting(2) #根据宽度的缩放比例等比例缩放 def set_width_func(self): text, ok = QInputDialog.getText( self, 'Input Width', u'输入宽度' ) if ok: try: width = int( text ) except ValueError: QMessageBox.warning( self, u"设置宽度", u"输入错误" ) else: self.m_width = width self.refresh_setting(1) def file_func(self): filename, ok = QFileDialog.getOpenFileName(self, "Open File", "C:/Users/Administrator/Desktop", "JPG (*.jpg);;PNG (*.png)") if ok: self.m_tedit.setText( filename ) size = self.get_image_size( filename ) s,w,h = self.get_current_setting() self.m_width = int(size[0]*s) self.m_height = int(size[1]*s) self.m_height_label.setText( str( self.m_height ) ) self.m_width_label.setText( str( self.m_width ) ) def folder_func(self): filename = QFileDialog.getExistingDirectory(self, "Open File", "C:/Users/Administrator/Desktop") self.m_tedit.setText( filename ) def generate_func(self): path = self.get_image_path() if path == None or path == "": QMessageBox.warning( self, u"Error", u"未选择文件" ) return elif os.path.exists(path) == False: QMessageBox.warning( self, u"Error", u"文件不存在" ) return if os.path.isdir(path): folder_resize( path, self.m_scale ) elif os.path.isfile(path): image_resize( path, self.m_scale ) def clear_func(self): self.m_tedit.clear() self.m_width = 0 self.m_height = 0 self.m_width_label.setText("0") self.m_height_label.setText("0") def get_image_size(self, image_path): with Image.open(image_path) as im: return im.size def get_image_path(self): path = self.m_tedit.toPlainText() if path.startswith( 'file:///' ): path = path[8:] return path def get_current_setting(self): return self.m_scale, self.m_width, self.m_height def refresh_setting(self, kind): s, w, h = self.get_current_setting() p = self.get_image_path() if kind == 0: if p == None or p == "" or os.path.exists(p) == False or os.path.isdir(p) == True: w = 0 h = 0 else: size = self.get_image_size(p) w = size[0]*s h = size[1]*s elif kind == 1: if p == None or p == "" or os.path.exists(p) == False: QMessageBox.warning( self, u"Warning", u"请先选择文件" ) return elif os.path.isdir(p) == True: QMessageBox.warning( self, u"Warning", u"文件夹不能设置宽度" ) return size = self.get_image_size(p) w = int(w) s = w*1.0/size[0] h = int((w/size[0])*size[1]) elif kind == 2: if p == None or p == "" or os.path.exists(p) == False: QMessageBox.warning( self, u"Warning", u"请先选择文件" ) return elif os.path.isdir(p) == True: QMessageBox.warning( self, u"Warning", u"文件夹不能设置高度" ) return size = self.get_image_size(p) h = int(h) s = h*1.0/size[1] w = int((h/size[1])*size[0]) self.m_width = int(w) self.m_height = int(h) self.m_scale = float(s) self.m_width_label.setText(str(self.m_width)) self.m_height_label.setText(str(self.m_height)) self.m_scale_label.setText(str(self.m_scale))if __name__ == "__main__": app = QApplication(sys.argv) mb = MainBody() sys.exit( app.exec_() )

整个工具比较简陋，能用就好。有什么不正确的地方请指出。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。