libnetpbm10 | Shared libraries for netpbm | Mehr ...
This package contains the shared libraries used by netpbm.
libnetpbm10-dev | Development libraries and header files | Mehr ...
This development package contains the library and header files for the pbm, pgm, pnm, and ppm graphics formats.
libnetpbm9 | Shared libraries for netpbm | Mehr ...
This package contains shared libraries used to be used by netpbm. Now we've switched to a single shared library, look out for libnetpbm10. This package is provided for backward compatibility.
libnetpbm9-dev | Development libraries and header files | Mehr ...
This development package contains the library and header files for the pbm, pgm, pnm, and ppm graphics formats, if the split and now deprecated libraries are used. . This package is provided for backward compatibility.
Netpbm is a toolkit for manipulation of graphic images, including conversion of images between a variety of different formats. There are over 220 separate tools in the package including converters for more than 80 graphics formats. . Website is http://netpbm.alioth.debian.org/