For what it's worth, I'll mention also that "upstream" is also a debian developer since 2005 and is the debian maintainer of the package. qpdf is known to be used in at least three commercial products and was used by a former employer (who enthusiastically supported its open source development) to process millions of PDF documents for a wide range of customers.
For what it's worth, I'll mention also that "upstream" is also a debian developer since 2005 and is the debian maintainer of the package. qpdf is known to be used in at least three commercial products and was used by a former employer (who enthusiastically supported its open source development) to process millions of PDF documents for a wide range of customers.