For instance, I want to change the image file extension from. In the Replace With: box, type the file extension you wish to batch change all selected items to, and in the Find: box type in the original file extension of selected files.In the Rename Finder Items window, choose Replace Text from drop-down menu.

Select the files all, right click (or Control Click) and choose Rename XX Items.Back to Finder, and locate the multiple files you want to change the extensions for.If necessary, uncheck the box for Show Warning Before Changing An Extension, otherwise you will be repeatedly prompted to confirm the extension change for each individual file when the system executes the process of batch changing extension.

In the Finder Preferences window, click on the Advanced tab, then check the box for Show All Filename Extensions and exit out of the Finder Preferences window.

Open Finder on your Mac, head to Finder menu and then choose Preferences.

Yet if you are a Mac beginner, read through the detailed steps of changing file extension on Mac. If you have got the trick to batch modify file names, you can skip this post. The process of changing file extension is similar to that of changing file name.

First of all, you should know that, changing the extension that comes as a file suffix is not changing the file type or name, and it does not involve any file conversion. In this post we will show you how to batch modify the extension of various kinds of items on macOS, without using third party tools or changing the actual fie names. Manually change the extension one by one is quite laborious especially when you are dealing with hundreds of image files. Have you ever felt the need to batch change the extension of multiple files? For instance, in some scenario you may want to change a bunch of image files with the JPEG extension to ones with PNG extension.

Bulk edit file names mac