As you must have noticed, Windows 10 Computer does not show File Extensions. However, you can easily change this default behaviour and make your Windows 10 Computer always Show File Extensions.
Every File on a Computer needs to have an Extension, which informs the Computer about the type of File it is and helps the Computer in deciding which Application or Program to use in order to open a particular File.
For example, Microsoft Word Documents have .doc or .docx File Extension, while Microsoft Excel Files have .xlsx Extension. Similarly, audio files have .mp3, .wma and other types of File Extensions.
The Need to See File Extensions in Windows 10
In case you want to, you can blindly trust your Computer to read Hidden File Extensions and open Files for you. After all, why should a user bother with File extensions, when your Computer is automatically doing it for you.
However, not setting up your Computer to Show File Extensions is a bad idea from security point of view and you may end up inviting malware to your Computer, in case you click on a File without knowing its File Extension.
For example, let us assume that you come across a File named as “document01” on your Computer. It is a bad idea to click on such a File without looking at its extension, especially if you do not recall creating a File with that kind of a Name.
Although, the file may look like a genuine PDF File with a PDF icon, it may turn out to be a harmful executable file with .exe Extension, instead of being a harmless PDF file with .pdf Extension.
If the File Extension was visible on your Computer, you would have immediately recognized that it was an executable “document01.exe” file and not a regular “document01.pdf” File.
Now that you know the advantage of being able to See File Extensions on your computer, let us get started with the steps to actually make your Windows 10 Computer Show File Extensions.
How to See File Extensions On Windows 10 Computer
1. Click on Windows 10 Start button and then click on File Explorer in the menu that appears (See image below).
2. On the File Explorer window, click on the View tab and then click on the little box next to File Name Extensions (See image below)
In case you are having difficulty with above steps, you can also make use of Control Panel to make your Windows 10 Computer Show File Extensions.
1. Right-click on Windows 10 Start button and then click on Control Panel in the menu that appears.
2. On the Control Panel Screen, make sure you are in Category View and then click on Appearance and Personalization.
3. On the next screen, click on File Explorer Options.
4. On the File Explorer Options screen, first click on the View tab and then Uncheck the option for Hide Extensions for Known File Types (See image below)
5. Click on Apply and Ok to get out of this screen.