ASCII Portable Bit Map (PBM) Files
Read and Write Utilities

PBMA_IO is a C++ library which reads and writes files in the ASCII Portable Bit Map (PBM) format for 2D bit map 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.


PBMA_IO is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version.

Related Data and Programs:

PBMA, a data directory which contains some example ASCII Portable Bit Map (PBM) files.

PBMB_IO, a C++ library which handles the binary Portable Bit Map (PBM) format.

PGMA_IO, a C++ library which handles the ASCII Portable Gray Map (PGM) format.

PPMA_IO, a C++ library which handles the ASCII Portable Pixel Map (PPM) format.


  1. the NETPBM homepage.

Source Code:

Examples and Tests:

List of Routines:

You can go up one level to the C++ source codes.

Last revised on 05 June 2010.