Mac OS X computers use a default application to open every file type based on its file extension. If you don't want to use the default application when opening a file, you can select "Open With ...

Red Eye Rose received a file with a strange extension. She doesn't know into what program she should load it. Neither does Windows.

How to change the default program a file opens with in Windows 7 When you open files that have a particular file extension, Windows will look at its configuration to determine what the default ...

Need to use third-party programs to open files on your PC? Here's how to change file associations in Windows 10 and choose which apps open which file types.

When you double-click a file on your Mac, the operating system will automatically open the file using the program assigned to that type of file. It is possible, though, to open the file using another ...

To show the file type extension or file extension in Windows 11/10, you need to open the Folder Options panel and remove the tick from the Hide extensions for known file types checkbox.

Changing one file type The quickest method to change a single file type is to do it from the Open With menu. If you want to change more than one file type at a time, skip to the next section.

How to Change Settings to Open a PDF File. A Portable Document File is a type of file that uses an open standard across different computer platforms and programs.

You can create a file without a File Type Extension in Windows 11/10 by carefully following the steps laid down in this post.