The .ifs file extension is used by a variety of software applications
for a number of file formats. Files with the .ifs file extension are
most commonly associated with OS/2 installable file systems.
The .ifs file extension is also used for Fractint files, IconForge
library files, YuvPak compressed image files, InfoSlips files and
Fractal Explorer files.
The fastest and easiest way to open your IFS file is to double-click
it. This allows the intelligence of Windows to decide the correct
software application to open your IFS file.
In the case that your IFS file doesn’t open, it is highly likely
that you do not have the correct software application installed on your
PC to view or edit IFS file extensions.