The only spp to jpg conversion we know of, would be an export of Serif PhotoPlus projects (.spp) to a JPEG raster image. It does not seem to be possible to perform this conversion with any other software, so the default PhotoPlus remains your only viable choice. Used to export adjusted digital photographs to common JPEG image.
Convert Serif PhotoPlus photo project to JPEG bitmap image format.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert spp to jpg on Windows
PhotoPlus is a professional and powerful photo editing software by Serif. The latest version is x8.
Convert from spp file
to jpg file
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.