Several different file formats work with Portal 2. Its task is to use various file-based processes, such as converting or opening and editing. Below is a list of file extensions that Portal 2 supports. The Portal 2 software is dedicated to handling these file types, so to be able to work with them fully, you should install it.
Files that work with Portal 2. Remember that it is not a rule that you will be able to edit all the files mentioned with the help of Portal 2. Sometimes it may be a file containing settings for software that you are not editing. Go to the subpage of the selected extension to get more information about it.
The most secure solution - the website of the creator of Portal 2. There may be times when you do not find the installation files there. You will surely find information about the place where you can safely download them. If you use an untrusted source, you may become infected with a virus.
Go to Portal 2 developer website
Copy and paste this link anywhere.