How to show or hide file extensions on Mac, iPhone, and iPad

On computers and mobile devices, a file extension is a suffix that an application appends to a file name. For example, when you see an item like "document.docx," the .docx extension tells computers and users what the file is and how to open it.

Some users find it unnecessary to see a file's extensions when viewing them in a file manager, but other users prefer to display them to help identify the file and its associated application. In fact, many workflows suffer if extensions are not front and center.

Luckily, if you use an Apple device, you can choose to make them visible or hidden. Whether you work on a Mac, iPhone, or iPad, the choice is yours. The following series of steps shows you how it's done.

Show or hide a file's extension on Mac

1. On Mac, select a file and then chooseFile -> Get Info from the drop-down list.
2. Click the arrow next to "Names and Extensions" to expand that section.
3. To show or hide file extensions, check or uncheck the box next to Hide extensions.

#Show or hide extensions for all files on Mac

1. Open a Finder window on Mac.
2. SelectFinder -> Settings... from the menu bar.
3. Select the Advanced tab.
4. Check or uncheck the mark next to Show all filename extensions.

Show or hide extensions for all files in iOS

Since iOS 11, Apple’s Files app makes file management an ‌iPhone A more realistic proposition on ‌and‌iPad. Not only can it access files stored on your device and iCloud, but also files stored in third-party services that support integration with the app, such as OneDrive or Dropbox.

Until recently, the only problem was that the Files app didn't support displaying file extensions. However, with the release of iOS 16, Apple quietly added an option to display the file extensions in the currently viewed folder. The following steps show you how to enable it.

1. In the Files app, navigate to a folder.
2. On iPhone, tap the ellipsis (three dots) button with the circle in the upper right corner of the screen. On the ‌iPad‌, click the icon consisting of four small squares .
3. Select> at the bottom of the drop-down menu to view options.
4. Select Show all extensions.

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