User1417933 84522 gold badges1111 silver badges1414 bronze badges 1 There appear to be python bindings to ImageMagick: imagemagick.org/obtain/python. I have never applied them, but I have employed ImageMagick, and it'll do what you want. user1342784 That is it! That is how the income percentage calculator works. It's also possible to waiting for link from Wiki Articles (15)