Converting GIF's, PNG's and JPG's to .ICO files using Imagemagick

Question

From: JPG, To: ICO;

/usr/bin/convert -resize x16 -gravity center -crop 16x16+0+0 input.jpg \\
-transparent white -colors 256 output/favicon.ico 

Answer 1

Add this option to convert:

-background transparent

However, keep in mind that your original image must actually have an alpha channel. PNGs may have an alpha channel, JPEGs do not.