Show File Name Extensions in Mac OS X

File extensions (like .jpg, .txt, .pdf, etc) make it easy to see what a specific file type format is, but as many Mac users notice, those file extensions are hidden by default in Mac OS X. While hi…

App Extension Programming Guide: Finder Sync

How to show hidden files on Mac

How to Show All Filename Extensions on a Mac

How to Batch Change File Extensions in Mac OS

How to show or hide extensions for all or selected files on Mac

How to Batch Change File Extensions in Mac

These secret Finder settings will vastly improve your Mac

How to Show Filename Extensions on Mac - iGeeksBlog

What Is A File Extension?

How do I show or hide file extensions on a Mac?