Conversion of jpg files to wmf file format
Considering both the JPEG and WMF graphics formats are somewhat common and well supported, you should have no trouble find some program capable of jpg o wmf conversion, most graphics editors should do fine. One important thing to mention though is that this will create a raster version of the .wmf file and not vector one, although .wmf file is more often used to store vector graphics.
Open JPG file
Open WMF file
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