Have you ever wondered where your file extensions are on your Mac? If you have, well you are not the only one, as it seems that a lot of macOS users are asking the same question. In reality, filename extensions are disabled by default on Mac. Normally, a file extension is shown at the end of the file. Moreover, enabling a file extension lets you know which app you can use to open it on your Mac.
In this step-by-step guide, we will walk you through the steps to show filename extensions on Mac. Before we begin, make sure that you are now running macOS Sierra. If not, update your device first.
Steps to show filename extensions in macOS Sierra
Steps to view individual file extension on your Mac
Step one: First off, you need to head to the individual file that contains extension you wish to view on your Mac
Step two: Next up, you now need to right-click on that file and select Get Info from the drop-down menu. Alternatively, you can use Command + I keyboard combination
Step three: Then, navigate to the Name & Extension section and click the triangle next to it to expand the section
Step four: All you need to do now is to check the box next to Hide Extension to view the file extension. If you change your mind, you simply need to check the box again to hide the file extension
Steps to show all file extensions in macOS Sierra
Step one: First off, you need to open Finder on your Mac and then click on Finder from the Apple Menu
Step two: Then, you simply need to select Preferences from the drop-down menu and the click on Advanced tab
Step three: Once you are in, all you need to do is to tick the box next to Show all filenames and extensions.
Got any questions? Let us know in the comments below.