On a Mac, Finder hides most file extensions by default. If you’d always like to see file extensions no matter of the file type, you can change a uncomplicated location in Finder Tastes. Here’s how.
1st, emphasis on Finder by clicking its icon in your dock. Future, open the Finder menu at the best of the display and find “Preferences.”
When Finder Tastes seems, click on “Advanced” in the toolbar at the leading of the window.
In Highly developed Finder Preferences, put a checkmark beside “Show all filename extensions.”
Close the Finder Preferences window, and you are established. Upcoming, open up a Finder window and seem at some information. You will see extensions hooked up to all of them.
How to Disguise Mac File Extensions Once again
If you ever want to conceal file extensions on your Mac once more, revisit “Finder Preferences” > “Advanced” and uncheck the “Show all filename extensions.”
Even then, some file extensions may however demonstrate up. For case in point, for some Mac customers, some documents in your “Downloads” folder may present extensions in any case (This is probably a bug.). If that is the circumstance, you can conceal extensions a single file at a time. To do so, ideal-click a file, find “Get Data,” then check out the box labeled “Hide extension” in the “Name & Extension” portion. Superior luck!
Connected: What Is A File Extension?