This program is part of Netpbm(1).
gemtopbm was replaced in Netpbm 9.1 (May 2000) by gemtopnm(1).
gemtopnm is backward compatible with gemtopbm, but works on color images as well.
This manual page was generated by the Netpbm tool 'makeman' from HTML source. The master documentation is at