A 2D view of a 3D object *.obj) can be typically saved as a common image (like PNG or JPEG) for previewing purposes. This can be usually done with some kind of view export function in a 3D modeling software or even with some dedicated converter program.
Convert 3D object graphics to JPEG bitmap image format.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert obj to jpeg on Windows
A 3D CAD translation softwate
Convert from obj 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.