批量修改文件属性，拖拽文件夹中的任一文件或直接选择相应的文件夹，再输入原文件后缀和要改成的后缀，点击转换即可-Batch modify file attributes, file drag and drop any file folder or directly select the appropriate folder, and then enter a suffix, and we wanted to change the original file suffix, click Conver