We have found one software suitable in our database for this conversion.
DjVU files are created when common images (such as JPG or PNG) are compressed with a specialized program to lower their file size without compromising the quality of the picture.
Typically used for book or other publication scans, so the resulting digital form is not enormous in file size. Most of the DjVu related programs should be capable of jpg to djvu conversion.
JPG
Files with jpg file extension contain pictures, digital photos, and other bitmap images. It is one of the most common image formats used today.
DJVU
A djvu file extension is used for a special image and document file format called DjVu. Typically used for image documents because it can achieve much lower file sizes, compared to other image formats with text, such as JPEG.