批量改文件名后缀的方法（Efficient ways to change file extensions in bulk）

Are you tired of manually changing file extensions for multiple files? Fear not, there are several efficient ways to do this in bulk. Here are some methods you can try:

Method 1: Command Prompt

This is perhaps the quickest and easiest way to change file extensions in bulk. Follow these simple steps:

1. Open Command Prompt on your computer.
2. Navigate to the directory containing the files you want to change. For example, if your files are in a folder called \"Documents\", type \"cd Documents\" in Command Prompt and hit enter.
3. Type the following command: ren *.old_extension *.new_extension
4. Replace \"old_extension\" with the current file extension and \"new_extension\" with the desired file extension. For example, if you want to change all JPEG files to PNG files, the command would be: ren *.jpg *.png
5. Press Enter and all the files with the specified extension will be changed to the new extension.

Method 2: Batch File

If you need to change extensions frequently, creating a batch file can save you a lot of time. Here's how to do it:

1. Open Notepad on your computer.
2. Type the following command: ren *.old_extension *.new_extension
3. Replace \"old_extension\" with the current file extension and \"new_extension\" with the desired file extension.
4. Save the file with a .bat extension (e.g. rename_files.bat)
5. Place the batch file in the directory containing the files you want to change.
6. Double-click the batch file to execute it and all the files with the specified extension will be changed to the new extension.

Method 3: Third-Party Software

If you prefer using a software for batch file renaming, there are several options available such as Bulk Rename Utility, Advanced Renamer, and Rename Master. These software offer advanced options for renaming files in bulk and can save you a lot of time and effort. However, most of these software are not free and may require some technical know-how to use.

By implementing these methods, you can easily change file extensions for multiple files in bulk, without the need for manual renaming. Choose a method that is most suitable for your needs and save time and effort in the process!