# OptiPNG version 7.9.1: Advanced PNG optimizer

## Copyright and licensing

Copyright (C) 2001-2025 Cosmin Truta and the Contributing Authors.
See the accompanying AUTHORS file.

This program is distributed under the zlib license.
See the accompanying LICENSE file.

This program uses third-party software released under various
open-source licenses.


## Resources

 * Home page:
   http://optipng.sourceforge.net/

 * Download:
   http://sourceforge.net/project/showfiles.php?group_id=151404

 * Announcements:
   https://sourceforge.net/news/?group_id=151404

 * Support:
   http://sourceforge.net/tracker/?group_id=151404


## Build instructions

On Unix, or under a Bourne-compatible shell, run `./configure` and `make`:

    ./configure
    make
    make test

TODO: CMake


## Installation instructions

Build the program according to the instructions above.

To install on Unix, make the `install` target:

    sudo make install

To uninstall on Unix, make the `uninstall` target:

    sudo make uninstall

TODO: CMake