Conversion of ljpg files to jpg file format

LJPG to JPG conversion is most likely doable, but the resulting file will be more compressed, smaller and thus with lower quality. However, no program that can work with LJPG and export to JPG format is not known to us. You could try to rename the file to DNG as sometimes these utilize LJPG compression and work with them in a digital photo editing tool.

Open LJPG file    Open JPG file