The conversion of the file ICNS to ICON will allow you to edit a file using other software than before. The conversion ICNS to ICON is particularly helpful in cases where you want to give certain features to the data in the ICNS file, and all the programs that support the ICNS format do not have the possibility to introduce the desired changes.
Just download one of the programs from the list and install it on your computer. After starting the program, select ICNS file that you want to convert. Then select the target format (in this case ICON) and follow the instructions. Save the converted ICON file in the selected location. From this moment you can open the ICON file with all the programs that you will find here.