: MacOS Icons: Combining three different designs into one ICNS file I created three different versions of one Mac icon in Sketch ranging from least detailed (small version) for 16x16 to most detailed

@Turnbaugh909

I have no idea about Sketch (I don't use it), but you can create the ICNS file from the Terminal...

Put all your icons in a folder with nothing but the individual image files. The images should all be named with the convention:

icon_<sizeinpoints>x<sizeinpoints>[@<scale>].png


The folder can be called whatever you like but has to have the .iconset extension (it's weird for a folder to have an extension, yes, but that's how the system knows it's an icon set).

So your folder should look something like:

MyIcons.iconset
|- icon_16x16.png
|- icon_16x16@2x.png
|- icon_32x32.png
|- icon_32x32@2x.png
|- icon_128x128.png
|- icon_128x128@2x.png
|- icon_512x512.png
|- icon_512x512@2x.png


Then from Terminal, run iconutil with the command...

iconutil -c icns <iconset filename>


Where <iconset filename> is the path to the iconset folder (Tip: you can drag the folder from Finder to the terminal and it will paste the correct path).

That will create the ICNS file for you with the same name and in the same location as the iconset folder you created it from.

You can read more here:


macOS Human Interface Guidelines: Package Your Icon Resources
Provide High-Resolution Versions of All App Graphics Resources

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