There exist no program for Windows that could perform this conversion, but there are several available for Mac. Windows users have to first convert OXPS to XPS or convert OXPS to PDF, and then proceed to convert the resulting file to JPG with a XPS to PNG converter or PDF to PNG converter.
Convert Windows OpenXPS document to Portable Network Graphic.
We have found 4 software records in our database eligible for .oxps to .png file format conversion.
Microsoft Windows software - convert oxps to png on Windows
One of the many XPS and OXPS converters
Convert from oxps 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 oxps 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.
Apple macOS / Mac OS X software - convert oxps to png on OS X
An XPS and OXPS viewer for Mac
One of the many document converters for Mac
An XPS/OXPS reader for Mac