Question: how to convert jpg to jef?
Answer: Launch Microsoft Paint and open a JPEG file by clicking "File" and "Open."
Click "File" then "Save As" and then save the JPEG file as a BMP file.
Launch your Janome Digitizer Easy Edit software. Click "Open" and select "Bitmap" from the "Format List" box. ... 
Click the "Save" icon and select the "Save As" option.