Collages (.clg) saved using Coallege Maker graphics software can be exported to all kinds of common graphics formats, including Portable Network Graphics (.png). We haven't found any other program capable of handling this type of .clg files, so the original Collage remains your best (and only) choice.
Convert Collage Maker graphic collage to Portable Network Graphic.
We found one software available in the database for this conversion.
Microsoft Windows software - convert clg to png on Windows
A graphics editor for making collages
Convert from clg file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.