ClippingSticker app for OS X is excellent tool that allows uses to export their .clipping files from OS X Finder and save them as PDF as well as several other graphics formats, including JPEG, PNG and other common picture files. Usually jpg extension is preferred over jpeg though.
Convert Mac Text clipping file (prior Mac OS 9) to JPEG bitmap image format.
We have found one software suitable in our database for this conversion.
Apple macOS / Mac OS X software - convert clipping to jpeg on OS X
A program for exporting clipping images
Convert from clipping 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.