Advice 1: How to change the extension rar

The extension is the few letters that stand in the file name after the last dot. With it, the operating system decides which program should open the file. Extension .rar files are rar archives.
How to change the extension rar
You will need
  • archive WinRar
Instruction
1
The archive has the extension .rar, and file it - any more, for example .mp3, .avi, .txt. If you only need a file contained in the archive, extract it by right mouse button and selecting "Extract...". To do this, your computer must have the program WinRar archiver.
2
If you know you downloaded a file with an incorrect extension, replace it with the correct. First make the extension visible. Operating system Windows XP, click "start" – "control Panel" – "folder options". In the opened window go to the tab "View" . Uncheck the option "Hide extension for known file types". In Windows Vista, in the tab "View" you will have to go to "advanced settings". In Windows 7 the path to the settings will look like the following: "start" – "control Panel" – "folder Options" - "View". Now the file will be named something like this: file.rar. Change the extension as desired, for example, file.mp3.
3
Despite the popularity of the rar format, users often prefer to transfer data online in zip format, because it is unpacked not need a special program, and sufficient funds of the Windows operating system. Click on the file, right-click, choose Rename and change the extension on .zip. Most likely, this will be enough and the files will open without problems.
4
To convert a rar archive to any other type, open it, click on "Operations" - "Convert archive". Check the boxes opposite the types of archives that you want to change. This list can be adjusted with the buttons "Add" and "Remove". Click "Compression", check the box next to the desired file format (e.g. zip) and click OK. Specify a folder to save the new file. Specify whether to delete the source files. Click "Save".
Note
You will not be able to make the archive file as a different file type, such as music. If a rar file is an archive, and you change the extension to .mp3, it just will not open. Change your extension only when you know that it is incorrect and what it should be.

Advice 2: How to change file format rar

Format .rar indicates that the selected file is an archive. In the archive, you can store folders and files. To change the file format .rar in several ways. It all depends on what the user needs.
How to change file format rar
Instruction
1
Ready in the archive, you can add new files. Open the archive by clicking on it with the left mouse button. Or click on its icon, right-click and select the context menu command "Open". You can also select the file .rar and press Enter.
2
In the opened window, click on the "Add" button. In the advanced window, specify the path to the file you want to archive, click the OK button and move to "Name and archive settings", then press OK. The file will be added to the archive. The same can be done via the menu "Commands" and "Add files to archive".
3
There is a quick way to add new files. Select the file you want to archive, hold down the left mouse button, drag its icon so that it was on the file format .rar. Release the mouse button – the file will be Packed in the chosen files.
4
To remove a file from the archive, open the RAR file, highlight with your mouse the files and folders that you no longer need, and choose from the menu "Commands" click "Delete files". Alternatively, click on the file (group of files), right-click and select in context menu "Delete files". Confirm your action in the query window. The fastest way: select some file and press the Del key. Confirm the deletion.
5
The files in the archive, you can assign new names. Menu Commands (or via the dropdown menu after clicking right mouse button on the file) to select "Rename the file". When a field name changes, enter the new name and click anywhere on the screen with the left mouse button or press the Enter key.
6
To change the contents of files Packed into the archive, open the archive and the file you want. Double-click the left mouse button on the chosen file or highlight it and press Enter. Make any necessary changes, and save them in the usual way. The system will warn you that the file is modified after the closing of the applications using it. Close the program that made changes to the file and in the window that appears, answer Yes to the proposal to update the file in the archive.

Advice 3: How to determine file type without extension

For each type of file has its own format and the application that recognizes the format. There are different cases in which the file extension is not displayed. You need to choose one way of action that fits your specific situation.
How to determine file type without extension
Instruction
1
If the extension is not displayed for user-specified (or default) settings, there are several ways to determine the file type. The simplest of them: move the cursor to the file icon and wait a few seconds without pressing the button. POPs up a small window with brief information. Among other things, this tooltip will indicate the file type.
2
Refer to the file properties, if information is missing. To do this, move the cursor to the icon of the desired file and click the right mouse button. In the drop-down menu, select "Properties". This will open a new dialog box, navigate to the General tab and read the information you need in the field "file Type". If you accidentally opened the properties of the file and the shortcut, on the General tab you will see the type "Shortcut". In this case, go to the tab "Shortcut" and read the data in the field "object Type".
3
You can also customize the display of file extensions. To do this, open "control Panel" via the Windows key or "start" button. Select the icon "folder options" in the category "appearance and themes". Alternatively, you can open any folder on your computer and select in the menu "tools" the item "folder options". When you open a new dialog box, activate the tab "View".
4
Scroll down the list under "advanced settings" and find "Hide extensions for known file types". Remove a token from this field and apply the new settings. Close the dialog with OK button or icon [x]. File extensions will be displayed.
5
In some cases, even with proper settings, the file extension may be absent, and in the properties window in the field "file Type" will be the definition of "File". You can try to open the file in different applications, it is likely that one of them will fit.
6
Another option: click the right mouse button and select "Open with". From the list of programs, select a simple Notepad. Regardless of the encoding in the beginning of the text can contain information about the file extension or the application in which it was created.
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