libpng16-16-32bit from home:frispete:tools project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:frispete:tools/openSUSE_Tumbleweed/home:frispete:tools.repo zypper refresh zypper install libpng16-16-32bit