画像の左下にChatWorkの画像を貼っつけてくれます。
before:
after:
-
ImageMagick
If you installed brew, try this:
brew install imagemagick
or, install from source. http://www.imagemagick.org/script/install-source.php
cd /some/path/you/like/
git clone https://github.com/cw-tanaka/cwavatar.git
cd ./cwavatar/
./cwavatar.sh /path/to/your/avatar.png ./avatar-cw.png