# pamarith > Apply a binary function on two Netpbm images. > See also: `pamfunc`. > More information: . - Apply the specified binary function pixel-wise on the two specified images (which must be of the same size): `pamarith -{{add|subtract|multiply|divide|difference|minimum|maximum|...}} {{path/to/image1.pam|pbm|pgm|ppm}} {{path/to/image2.pam|pbm|pgm|ppm}}`