xpmtoppm

Convert XPM pixmaps to PPM format

Convert XPM to PPM

$ xpmtoppm [input.xpm] > [output.ppm]

Extract alpha channel

$ xpmtoppm --alphaout=[alpha.pgm] [input.xpm] > [output.ppm]

xpmtoppm [options] [file]

xpmtoppm converts X11 pixmap format (.xpm) to PPM. Handles transparency and color-mapped images. Part of Netpbm toolkit.

--alphaout file

Write alpha channel to file.