App Icon Producer is an easy-to-use app for generating a .icns file from an image file with just some clicks. You only need to select or drag and drop an image file into the box and click the "Export" button to get a ready-to-use ICNS file. The generated .icns file consists of the following 10 files: icon_16x16.png, icon_16x16@2x.png icon_32x32.png, icon_32x32@2x.png icon_128x128.png, icon_128x128@2x.png icon_256x256.png, icon_256x256@2x.png icon_512x512.png, icon_512x512@2x.png Try it out.
