ppmtoxpm

Convert a PPM image to an X11 version 3 pixmap. More information: https://netpbm.sourceforge.net/doc/ppmtoxpm.html.

ppmtoxpm path/to/input_file.ppm > path/to/output_file.xpm

ppmtoxpm -name prefix_string path/to/input_file.ppm > path/to/output_file.xpm

ppmtoxpm -hexonly path/to/input_file.ppm > path/to/output_file.xpm

ppmtoxpm -alphamask path/to/alpha_file.pgm path/to/input_file.ppm > path/to/output_file.xpm