Optimizing and downsampling images in PDF

Q: We monitored our Service, and found out that users, send us very
large PDFs containing Images with 300+ DPI. Also some files have
images that are not visible or are not referenced anywhere.

I would like to know, how can I using PDFNet optimize these files so
that PDF that contains Images in 72 dpi, and that unused images are

Probably the simplest way is to use ‘pdftron.PDF.Optimizer’ as shown
in the Optimizer sample project (http://www.pdftron.com/pdfnet/
samplecode.html#Optimizer). ‘pdftron.PDF.Optimizer’ is a separately
licensable add-on option to PDFNet Core SDK. Alterntively you can
implement your own optimizations along the lines of JBIG2 sample