How to Change File Extension

For reasons you do not know, your friend has emailed you a file with the wrong extension. It should be a DOC document and instead appears as an unknown file, this means that to open it you have to start Word and import the file into the program manually. A real nuisance, isn't it? So roll up your sleeves right away and find out with me how to change file extension on your PC. In this way, you will be able to apply the correct extension to all your files and you will finally say goodbye to the useless procedures that you have to have to access them.

How do you say? You are not very experienced in IT and new technologies and fear that the operation in question is out of your reach? Come on, don't be a coward. Apart from the fact that the procedure to start is really very simple but then I don't really see what you worry about seeing and considering that I'm here with you, ready and willing to provide you with all the necessary information. Come on then, let's not waste any more time chatting and let's get busy. In the end, you will see, you will be able to say that you are very happy and satisfied with what you have learned.

Thing? You do not use Windows but a Mac and would like to understand if this is also feasible on Apple branded computers? Well, of course yes, I had already thought of this too, don't worry. In fact, at the end of the article you will find a passage entirely dedicated to the macOS side with all the appropriate instructions on what to do. The same goes for Linux, at the end of the guide I proceeded to insert an ad hoc paragraph. But now it is enough to talk and let's get to work. I wish you, as usual, happy reading and I wish you a very big good luck for everything.

Please note: Changing the file extension is in no way equivalent to converting them. If your need is to change the current file format to another, the instructions in this guide won't help you. In this case, what you need is a conversion tool, precisely, like the ones I reported to you in my article dedicated to the topic.

Your Pc

Are you using a PC with Windows installed and would like to understand how to change the file extension? Then follow the instructions on what to do that you find below and in no time you will find out. Whether you are using Windows 10, 8 / 8.x, 7, Vista or XP it makes no difference, the procedure to follow is the same in all cases.

First, though, you need to enable the display of filename extensions. Find everything explained below, do not worry.

Getting Started on Windows 10 and 8 / 8.x

If what you are using is a computer with su installed Windows 10 or Windows 8 / 8.x, the first move you must make to succeed in your intent is to make sure that the display of extensions in file names is enabled (and if not, you have to worry about activating the aforementioned option).

To do this, click on the icon gialla poster that is on taskbar and once the File Explorer presses the button Fillet placed in the upper left part of the same. Then select the item Change folder and search options give the menu to compare.

From the additional window that opened on the desktop, select the tab viewing, scroll through the list of Advanced Settings and check that on the box next to the wording Hide extensions for known file types there is no check mark. Otherwise, deselect the option and click on it first Apply and then OK to apply and save the changes made.

In addition to the way I just indicated, you can make sure that the option that allows you to view the file extension is active by clicking on the tab View located in the upper right part of the window File Explorer and looking if on the box next to the wording File name extension there is a check mark. If not, take care of yourself.

Preparations for Windows 7 and Vista

On your computer there is installed Windows 7 or even more dated Windows Vista? No problem, even in this case you can check that the option that allows you to view the file name extension is enabled (or, if not, you can enable it yourself), so that you can then change the extensions.

To do this, open Windows Explorer by clicking on gialla poster you find sula taskbar and select the item Folder and search options from the menu Organize located at the top left.

In the window that opens, click on the tab viewing and check that on the box next to the item Hide extensions for known file types there is no check mark. If present, remove it and then click on first Apply and then OK to save the settings.

Windows XP Preliminary Operations

Even in the case of the now ancient Windows XP, you need to worry before verifying that the option to show the file extension in their name is enabled. To do this, first open any folder and then select the item Folder options from the menu Means.

In the window you see appearing on your desktop, click on the tab viewing and check that next to the item Hide extensions for known file types there is no check mark. If present, remove it then click on Apply and OK to save the settings.

Change the File Extension

Here we are! Now, regardless of the version of Windows used, you are finally free to change the file extension as you see fit. So right click on the name of the file in relation to which you intend to go and press on the item Rhinomine menu that appears.

Delete everything written after the final dot in the file name, type the correct extension and press the key Submit on the keyboard to confirm the changes made. Then press the button Si in response to the warning that appears on the screen and it's done.

For example, if you have a Word document that is called document.xxx, remove xxx and write doc (i.e. the extension of the Word files) instead of xxx. If the file you need to rename has no extension (eg. document), add a period followed by the extension you want to give it at the end of the name (ex. document.doc). Easier than that?

As an alternative to the procedure I have just explained to you, you can change the file extension by right clicking on the element you intend to intervene in, pressing on the item Property attached to the menu that appears and modifying, following the same instructions I gave you a moment ago, the text field located at the top of the card General in the window that is shown to you. Once the changes are complete, click on first OK and then Si to confirm the changes.

Your Mac

Are you using a Mac and would like to understand how to change the extension of your files? Then follow the instructions on what to do that you find below. Even then, you won't have to do anything particularly complicated to succeed, you have my word.

Preliminary Operation

As in the case of Windows, even on Mac the first thing you need to do in order to succeed in your intent is to make sure that the display of the file extension is enabled. To do this, open the Finder by clicking on the relevant icon attached to Dock bar (the one with the smiley face) then presses on the voice Finder in the top left menu bar and select Preference ....

Once that's done, select the tab Advanced from the Finder configuration panel and check that the box next to the item Show all filename extensions there is a check mark. If not, you affix it yourself. The changes will take effect immediately.

Change the File Extension

At this point, you are finally ready to take the real action, that is to change the extension of your files on Mac. The procedure is not so dissimilar to that seen on Windows in the previous lines. In fact, all you have to do is right click on the file you want to intervene in and select the item Rhinomine give the menu check if you press.

So delete everything you find written after the final point in the file name and type the correct extension of the same. Then press the button Submit on the keyboard and click on the button Usa .xxx in response to the warning you see appearing on the screen, to ensure that the changes made are actually applied.

For example, if you have a PDF document that is called document.xxx, remove xxx and write pdf (i.e. the correct extension) instead of xxx. If the file you need to rename has no extension (eg. document), add a period followed by the extension you want to give it at the end of the name (ex. documento.pdf).

As an alternative to the steps in question, you can proceed as follows: select the file on which you want to intervene by left clicking on it, left click on its name again and wait a few moments for it to be highlighted. You can also left click on the file name and press the button Submit on the keyboard. In both cases, then proceed with changing the extension as indicated above.

On Linux

As for the slope instead Linux (and in particular way Ubuntu, one of the most famous distros in circulation), I would like to point out that the “penguin” operating system (or rather its desktop environment) approaches files in a completely different way than Windows. In addition to taking into consideration the extension, Linux analyzes the content of the file and tries to identify its type using heuristic techniques.

To be honest, not even on Macs only extensions are used to determine the type of a file. Apple, however, has decided to introduce the possibility of hiding or displaying extensions in the Finder, as you have seen yourself in the previous step.

Consequently, as far as Linux is concerned, in many file managers (as in the case of Nautilus Ubuntu) the extension is considered as a part of the same file name and it is not allowed to hide or display it at will by using a special option.

So, to be able to change the extension of a given file on Linux all you have to do is right-click on it, choose Rename ... from the menu that appears, delete everything written after the final point in the file name, enter the correct extension and press the key Rhinomine on the screen or the key Submit on the keyboard to confirm everything. Simple!

For example, if what you are interested in taking action is a JPG file called foto.xxx, remove xxx and write jpg (i.e. the correct extension) instead of xxx.