Having problems opening an ICNS file?

We have programs that can open or convert your ICNS files.

Opening ICNS files

Did your computer fail to open an ICNS file? We explain what ICNS files are and recommend software that we know can open or convert your ICNS files.

What is an ICNS file?

Files that contain the .icns file extension usually store icon image files. These icon image files are used by the Mac OS X operating system. This file format supports both 1 and 8 bit alpha channels as well as multiple image stages including folder icons in both the opened and closed states.

Each ICNS file is associated with a corresponding application. The ICNS file acts like a container file and stores the individual icon and resources within the file container. The icons contained within the files can be scaled by the user's operating system to adjust to the proper display size.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension ICNS

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the ICNS file format or software that uses files with the ICNS suffix, please do get in touch - we would love hearing from you.