ppmb_io, a Python code which reads and writes files in the binary Portable Pixel Map (PPM) format for 2D color graphics information.

There are many graphics programs, such as XV and GIMP, that can display images in this format, or translate them to other formats such as BMP, GIF, JPEG, MacPaint, X Window, and so on.


The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.


ppmb_io is available in a C version and a C++ version and a Python version.

Related Data and Programs:

ppma_io, a Python code which can read or write ASCII Portable Pixel Map (PPM) files.


  1. the NETPBM homepage.

Source Code:

Last revised on 30 January 2020.