SCR format (Sun Raster) is a bit outdated and probably not used in modern software. However some graphics editors may still support it and produce it from common images like .jpg or .png. Some of the viable options are listed below.
Convert JPEG bitmap image format to Sun Raster bitmap image file.
We found 2 software records in the database related to .jpg to .scr file format conversion.
Microsoft Windows software - convert jpg to scr on Windows
A complete image retouching program
Convert from jpg 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 jpg to scr. 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.
Multiplatform software - convert jpg to scr on any platform
A popular utility for viewing and converting graphic files