I need this functionality as well. One poster suggested that you use a third party app to change file extensions, but I believe all that does is copy the file into the app and then allow you to change the file extension. Not change it at the source where you really need to so you can manage the file with other applications in the future.

1. Change File Extension Xp
2. File Name Extension

Lack of ability to manage file extensions for your saved file is a huge gap. One that needs to be closed, among others for an iPad to even be considered a good replacement for Mac OS.

Jan 15, 2018 9:01 PM

Each file in your Windows operating system has an extension in its filename, eg.txt,.doc, etc.These extensions are used to identify the program, with which, windows can open this file.

• The easiest way to change a file's extension is to save the file as a different file type from within a software program. Changing the file extension in the file name won't change the file type, but will cause the computer to misidentify the file. In Windows and Mac OS X, file extensions are often hidden.
• You can change file extension as well as the name of the files. The software is free to download. First of all, you need to download the software and install in your system. Now launch the software and locate the folder containing all the files you want to change the extension from the file browser at the left sidebar of the software.
• Right-click the file name and select Rename (or left-click and hold down the button for one second). Enter the new extension like so: After entering the new extension, hit the Enter (return) key. Windows will give you a warning that the file may not work properly.

Once I got into a big trouble. There was a lengthy directory of images which I earlier edited using a photo editing software. I saved all the images in png file format but it was my huge mistake as the images were supposed to be saved in the jpg file extension. It became quite the worst situation as there were about 700 files and changing the extension of each image one-by-one was, you know, quite frustrating. I was trying to gather the strength to do it. Also, it would take a lot of time which I couldn’t afford.

Change File Extension Xp

So, after searching over the internet and doing some experiments, I got to know that it was possible to change the extension of multiple files in a batch. Then I used that method to change the extension of all the files in that folder.

Well, today I got the opportunity to share this with you and explaining about some ways to change the extension of multiple file extensions in a folder so that whenever you face the same kind of situation you don’t have to waste time over here and there to find the solution.

Must visit: How To Cleanup Huge Space In Your Windows PC

Step by Step Guide to Change Multiple File Extension in a Folder

This article how to change the extension of all the files in a folder step by step contains some of the best ways to change file extensions of the image in a batch.

Using command Prompt

This is the basic and the easiest method to change multiple file extensions in a go. The method includes only a few steps to change the extension of all the files in a folder. Here is the complete guide of using command prompt for changing extensions of files in a bulk.

Just to write this tutorial, I created a folder and put about 14 jpg files in it. We will see how to change the extension of all the jpg files to png. You can use the same steps for other file extensions too.

1. First of all, locate the folder containing all the files which you want to change the extensions.
2. Now press the shift key and right-click on the folder simultaneously. Here my folder named jpgfilesis situated on the desktop.
   
3. Now, a list of the different functions will show up there, you need to select the open command window here option.
4. It will start the command prompt with the path of the folder in it. First, explore the folder to show you the current extension of all the files. You can check the full directory of any folder by using the following command. “path of the folder”>dir
   
5. It will show you all the files contained in the folder with their names and extensions.
6. Now, I want to change the extension of all the images from .jpg to .png. So, for doing this I used the command ren *.jpg *.png and hit enter. The moment I enter the command it changed all the files extension to .png from .jpg. To check if the extensions were really changed or not, just the type the “path of the folder”>dir again and all the files displayed again but with the .png extension. That means the extension of all the files were changed successfully. So, the command to change the extension of multiple files at once isren *.current file extension *.new file extension.
   
7. Hence using this command you can change the extensions multiple files in a bulk within few seconds.

This was the command prompt method for changing files extensions for multiple files in one go. But command prompt method is limited to few extensions only. For other file extensions, there are other utilities available using which you can perform the same function. Following are some of the best such tools explained in detail.

Using Extension changer

Extension Changer is a cool tool to change the extension of multiple files in a batch. Also, it is not restricted to few extensions only, you can change from any extension to another file extension. The process included is also very quick and easy to understand. You can download the software for free. Follow the below steps to change extensions of multiple files using Extension Changer.

1. First, download and install the software on your system.
2. Now launch the software and drag-n-drop the folder containing the files of which you want to change the extensions.
   
3. The software will ask you if you want to include sub-folders, just click the Yes button if you want to.
4. Next step is to specify the new file extension of your choice, simply type the extension name in the change (.*) to the textbox and click on the Change button. All the files extensions will be changed immediately.
   

Using Bulk rename Utility

Bulk rename utility is the another great tool to change the file extensions in a batch. The software is quite powerful and contains many options to choose from when you wish to rename or change the extension of multiple files. But it lacks in the interface as the interface of this software is quite complicated and cluttered. Otherwise, it contains many helpful functions. You can change file extension as well as the name of the files. The software is free to download.

1. First of all, you need to download the software and install in your system.
2. Now launch the software and locate the folder containing all the files you want to change the extension from the file browser at the left sidebar of the software.
3. Select all the files and go to the Extension named panel as shown in the image. Here select the Fixed option from the drop-down menu and beside it, enter the name of the extension you want to set for the files.
   
4. It will also show you a preview of the new filename as shown in the below image.
5. Now the last thing to save changes to the files, simply click the rename button and all your files will be modified successfully.
   

File Name Extension

So, these were some of the best methods to change the extensions of multiple files in a bulk. Changing extensions of multiple files is quite helpful which saves your time as well as energy. So, tell us which method you liked the most and if you know some other ways to change the extension of all the files in a folder then be generous and share with us in the comment box.