Do you know what is a file extension and why it’s so important? Well, a file extension is shown at the end of a file and starts with a period which is followed by a few characters. For example, the file myhomework.pdf ends .pdf, a file extension that might be associated with Adobe Reader Document on your Mac. However, the default setting for Mac OS is to not display a file’s extension as those file extensions are hidden. As an instance, image files with the .png extension will ignore the .png at the end of the filename, and apps will likewise discard the. app extension.
However, depending on your need, you can show or hide an individual or the entire files filename extensions on your Mac.
If you have not set up your Mac to show file extensions, it can potentially harm your Mac likewise, you have open an unknown file on your Mac without checking its Extension.
For example, let us assume that you come across a new file named as “document001” on your Mac. It is not a good idea to click on such an unknown file without taking a look at its extension, especially if you do not remember creating a file with such a name.
It can be a potentially harmful file or can be a virus.
So, it is important that you enable the option to show the filename extensions for files on your Mac.
It’s as simple and quick as that. If you like to show/hide filename extensions, then follow these easy steps.
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