How to Change File Extension in Mac?
Last Updated :
23 Jul, 2025
File Extensions or Filename Extensions are algorithm-specific elements that can be opened only with the specific application based on the algorithm mentioned there. There are a large number of file extensions present and can be different based on the Operating System. Like, the compressed file format is different in Windows & Mac.
If you are using any Mac device, scenarios to Change File Extensions will not be very rare. To open any files where you do not have any proper application, the Mac File Extension should be changed to open it. Also, you can use the File Extension Alteration method to save any confidential file from being opened by any stranger by changing its file format.
In this article, we will discuss the steps required for changing File extensions in Mac OS.
Steps to Change File Extension on Mac
Step 1: Open Finder & go to the Preferences.
Step 2: Enable the Option Show All File Name Extension.
Step 3: Now, select the File & right-click over it to Rename the file. And change the extension based on the need.
Hence, we have successfully altered File Extension on Mac.
Steps to Change File Extension on iPhone or iPad
Step 1: Open the Files Application & click on the Three Dots present there.
Step 2: Under the View Option, click on Show All Extensions.
Step 3: Now, hold down the file for a while to get a few options. Select the Rename to change the File Extension there.
Hence, we have successfully altered File Extension on iPhone or iPad.
So, these are the simple steps you can perform to change the File Extension on iOS devices. If you are using MacBook or iMac the steps required for the desktop should be used. Otherwise, you can use the iPhone methods to achieve your target. Now, open any files without the necessary application on Mac by changing it file extension.
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