Hi,
I checked the code - no, it does not work for JPEG. The reason is, that here you can use the DrawJPEG and DrawImageClone to very effectively duplicate images in a PDF.
The automatic detection works with bitmap data found in the wPDF input EMF data. This works witin one PDF document - so if a bitmap is duplicated on seperate page the duplicate still is detected.
WPTools will send JPEG directly and unmodified to the PDF eingine. It also takes care, duplicated images (on headre and footer typically) are only embedded once.
Regards,
Julian