pnmmontage

Create a montage from multiple PNM images. More information: https://netpbm.sourceforge.net/doc/pnmmontage.html.

pnmmontage path/to/image1.pnm path/to/image2.pnm ... > path/to/output.pnm

pnmmontage -0..9 path/to/image1.pnm path/to/image2.pnm ... > path/to/output.pnm

pnmmontage -quality p path/to/image1.pnm path/to/image2.pnm ... > path/to/output.pnm

pnmmontage -data path/to/datafile path/to/image1.pnm path/to/image2.pnm ... > path/to/output.pnm