GnuWin32: NetPbm 10.27 is available as a free download on our software library. The program is sometimes distributed under different names, such as "GnuWin32 NetPbm". The actual developer of the free program is GnuWin32. The following version: 10.2 is the most frequently downloaded one by the program users. GnuWin32: NetPbm relates to Photo & Graphics Tools. Our antivirus check shows that this download is malware free.
From the developer:
Netpbm is a toolkit for manipulation of graphic images, including conversion of images between a variety of different formats. There are over 300 separate tools in the package including converters for about 100 graphics formats. The goal of Netpbm is to be a single source for all the primitive graphics utilities, especially converters, one might need.
You may want to check out more software, such as GnuWin32: GetText, GnuWin32: LibIconv or GnuWin32: PlotUtils, which might be related to GnuWin32: NetPbm.