File Extensions are important for an operating system as they tell about the file format. This article covers what are File Extensions and why are they important.

Normally, if you change a file’s extension in Windows, it doesn’t do anything positive. It just makes the file open in the wrong programs that can’t decode what’s inside.

Some file types rely on an extension more heavily. For example, an XLSX file is a type of compressed file, so the extension is important. Without it, an app like xdg-open wonâ t do quite what ...

In iOS 16.0 and later, you can make Apple's stock Files app display file extensions for items in the currently viewed folder. Keep reading to learn how it's done.

Show or Hide Extensions for All Files in iOS Since iOS 11, Apple's Files app has made file management a more realistic proposition on ‌iPhone‌ and ‌iPad‌.