http://entropymine.com/jason/tweakpng
위 사이트의 tweakpng 솔루션은 visual studio 2019 에서 사용할 수 있도록 REFORM 프로젝트 입니다.
2019-12-24 : debug, release option 추가
2019-12-24 : zlib1.2.11, libpng1.6.37 version update
2019-12-23 : fork https://github.com/jsummers/tweakpng
A Windows application for viewing and editing PNG metadata.
For usage instructions, see tweakpng.txt.
For development instructions, see tweakpng-src.txt.
Web site