Read and Write Routines
STL ASCII 3D Graphics Files

STLA_IO, a C++ code which reads and writes the 3D graphics information stored in an ASCII STL (stereolithography) file.


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


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

Related Data and Programs:

STLA, a data directory which contains some examples of STLA files.



  1. 3D Systems, Inc,
    Stereolithography Interface Specification,
    October 1989.

Source Code:

Last revised on 19 April 2020.