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.

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 ...

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 ...

Each category of file type has many file formats according to their compression level or other factors. The programs recognize the files by their format and open them.

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

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 ...

Disabling File-Type Warnings Close the program you are using to open the file that gives you the "Always ask before opening this type of file" message, if it's currently running.

You don't need an expensive Adobe subscription to open Illustrator files. Here's why Inkscape, Affinity Designer, and ...

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