Several Corel programs that can work with WordPerfect graphics files (*.wpg) also have the capability to resave it to another graphics format - including the PNG.
Convert Corel WordPerfect graphic file to Portable Network Graphic.
We have found 3 software records in our database eligible for .wpg to .png file format conversion.
Microsoft Windows software - convert wpg to png on Windows
A professional photo editor and manager for Windows
Convert from wpg file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned wpg to png. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A set of applications used by professional graphic designers
Multiplatform software - convert wpg to png on any platform
A vector graphics editor