How To Display Filename Extensions On Mac
By default, OS X hides the extensions of filenames. If you would like to display filenames extensions follow below instructions.
Displaying File Extensions
Step 1: Open a new "Finder" window on your Mac.
Step 2: In the Menu bar, go to Finder > Preferences.
Step 3: Click on the "Advanced" tab.
Step 4: Select the box that says “Show all filename extensions”. If you want to hide file extensions, just uncheck the box.
It’s as simple and quick as that.
Displaying File Extensions
Step 1: Open a new "Finder" window on your Mac.
Step 2: In the Menu bar, go to Finder > Preferences.
Step 3: Click on the "Advanced" tab.
Step 4: Select the box that says “Show all filename extensions”. If you want to hide file extensions, just uncheck the box.
It’s as simple and quick as that.