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How to view file extension

Have you found files with an unknown extension and you don't know how to open it? Do you want correctly display the extension of a file when you open a folder on your PC? In this guide you will find everything you need to ?master? file extensions on any operating system and how to recognize and open extensions unknown to the operating system.

How to view file extension on Windows

On Windows, the file extensions recognized by the system are never displayed by default, this is to prevent the user from accidentally changing the part of the name that concerns the extension, thus making the opening of the file in vain. both the procedure to view file extension on Windows 10 and Windows 8.1 and the standard procedure to be used on Windows 7 (but also applicable on the latest operating systems).

To view the file extension on Windows 10 and Windows 8.1 just open Windows Explorer (or My Computer), open the item in the top bar View> Show / Hide and finally put a check mark on File name extensions.

How to view file name extensions on windows 10

The standard procedure on Windows 7 (but also applicable to Windows 10 and Windows 8.1) to show the file extensions in the name itself is to open the entry Folder and search options?

windows folder options

? Go to the Views menu and remove the tick from the item Hide extensions for known file types.

show windows 7 file extensions

By reactivating this item you can hide the file extensions again. Now that the extensions are clearly visible you will always know what type of file you are about to open on your PC with Windows operating system.

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How to view file extension on OS X

If you own an iMac or a MacBook you can view the file extension in a very simple way. Open Finder in the bottom bar and, in the top bar, open the menu Finder> Preferences.

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In the new window that you will see open the tab advanced, then click on the item Show all file name extensions.

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From now on Finder will show the files with their extensions, so you always know what type of file is being opened.

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How to view file extension on GNU / Linux

If you're thinking about how to view file extensions on GNU / Linux, take advantage right away: GNU / Linux distributionsalways show file extensions, therefore it is not necessary to activate any item (whatever the distribution used). To prevent the user from accidentally deleting the file extension during the renaming phase of the same, only the "editable" part will be shown, although nothing prevents you to also change the extension (which will render the file unusable on other operating systems).

GNU / Linux therefore always far ahead, not requiring any particular configuration for this specific case.

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How to recognize unknown extensions

Did you download a file with an unknown extension from the operating system? Do you not know which program to manage it with? In these cases, free online services come to the rescue that can recognize the type of file starting from the extension and show you the programs (or the program) to open it correctly.

One of the free services you can try on the Internet OpenTheFile, available at the following link.

LINK | OpenTheFile

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Just type in the unknown file extension, then press the Search button to get more information regarding the file. The results found on the network will be shown, with compatible programs to correctly open the file with an unknown extension. The site also offers a complete list of extensions from which you can choose the one you want and find out all the information about it.

In addition to OpenTheFile you can try one of the following web services to recognize the extension of an unknown file:

In both cases, simply insert the extension or upload the unknown file to perform an in-depth analysis and find out which program to use to manage that file with an unknown extension.