You misread the license: http://ikons.piotrkwiatkowski.co.uk/license.html http://ikons.piotrkwiatkowski.co.uk/license.html > Making modifications or alteration

You misread the license: http://ikons.piotrkwiatkowski.co.uk/license.html http://ikons.piotrkwiatkowski.co.uk/license.html > Making modifications or alterations to any of the icons does not free you to then sell, license or distribute them to anyone else. If you’re looking for something really permissive: http://fortawesome.github.io/Font-Awesome/icons/ http://fortawesome.github.io/Font-Awesome/icons/