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
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