This service menu will add an 'Extract JPG image(s) from RAW' option when right clicking on NEF (NIKON) or CR2 (CANON) RAW image files.
These files contain an embedded high quality jpg image for preview, that it can be extracted using exiftool.
The script will save the extracted image with the same basename as the raw file, and a trailing .jpg extension. If the target filename exists, no operation will be made.
It can work for a single, or many selected images at once.
The initial resources to build this service menu were found on these two websites:
Dolphin -> Settings -> Configure Dolphin -> Services -> Download New Services...
Find the raw2jpg service meny and install it.
Download the file and run these commands:
1. cp 99-raw2jpg.desktop $(echo $(kde4-config --localprefix)share/kde4/services/ServiceMenus/)