.R21 File Extension

What is a .R21 file?

.R21 is a Compressed Files file of a Binary format made by Eugene Roshal. You can work with .R21 files on Mac, and Windows.

How to make a .R21 file?

To make .R21 files, you have to use Smith Micro StuffIt Deluxe for Windows or any other program indicated below. You can download programs for Mac, and Windows from official sources. .R21 file editor download is also available on its official web page. To learn more about .R21 file opener and its alternatives, visit the program official web site.

How to open .R21 files?

You must have one of the programs that can open .R21 files. After the installation of the .R21 file viewer, you will be able to open all .R21 files.