pbmtogem

Read a PBM image as input and produce a compressed GEM .img file as output. pbmtogem cannot compress repeated lines. More information: https://netpbm.sourceforge.net/doc/pbmtogem.html.

pbmtogem path/to/file.pbm > path/to/file.img

pbmtogem -quiet

pbmtogem -version