create ICO file with more than one image

convert -background transparent input.png -define icon:auto-resize=16,32,48,64,128 favicon.ico
requires imagemagick. -background transparent is of course optional.
Sample Output
requires imagemagick 7 or higher

for older version use:

convert image.png  -bordercolor white -border 0 \
      \( -clone 0 -resize 16x16 \) \
      \( -clone 0 -resize 32x32 \) \
      \( -clone 0 -resize 48x48 \) \
      \( -clone 0 -resize 64x64 \) \
      -delete 0 -alpha off -colors 256 favicon.ico

or
convert -resize x16 -gravity center -crop 16x16+0+0 input.png -flatten -colors 256 favicon.ico

1
By: emphazer
2018-09-27 13:12:03

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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