Create multiple sizes icon using ImageMagick

[tmplinshi]

Code: Select all

convert input.png ^
        ( -clone 0 -resize 48x48 ) ^
        ( -clone 0 -resize 32x32 ) ^
        ( -clone 0 -resize 16x16 ) ^
        -delete 0 -alpha on -background none output.ico

Or a single line:

Code: Select all

convert input.png ( -clone 0 -resize 48x48 ) ( -clone 0 -resize 32x32 ) ( -clone 0 -resize 16x16 ) -delete 0 -alpha on -background none output.ico