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