Hi,
It will use the non-retina 32x32 for 16x16@2x, etc, so your icons will not
look pixelated if you omit the @2x icons.
If you're worried about the file size of your .icns file exploding, I've
created a small utility that can be used in combination with png utilities
like pngquant to reduce the
When using an *.icns file on Retina Macs without providing any explicit
@2x imagery, will it simply fall back to the non-Retina 32x32 icon for the
16x16@2x size, non-Retina 64x64 for the 32x32@2x size, ..., non-Retina
512x512 icon for 256x256@2x size or will it upscale the 16x16 icon for
16x16@2x
