We have reduced PDF
generated file size for all version of the PDF format, by trimming any
uneeded space in the generated content.

We introduced a new optional PDFGeneratePDF15File
property for
even better compression, using advanced features (Object Streams and
Cross-Reference Streams) of the PDF 1.5 format.
This PDF 1.5 format needs Acrobot 6.0 and up to open them.
Which should be the case on your computer.
Can be up to 70% smaller for a pdf with a lot of pages with simple textual
context.
I suspect our library is able to generate the smallest file size possible,
even in regard to other alternative libraries.
Open Source can be great, can't it?
We still have an issue which disallows to enable the full benefit of
PDFGeneratePDF15File=true
when encryption is set.
But even if the files may be a bit bigger in respect to when encryption is not
set, the generated content is still perfectly valid... and encrypted!
If you have an idea about the problem cause, your feedback is welcome!
We can discuss on
our forum.