Despite that I share the same experience as btmorex (my native PDF viewer is faster than any web viewer), there is also the additional problem that you need som

Despite that I share the same experience as btmorex (my native PDF viewer is faster than any web viewer), there is also the additional problem that you need sometimes restricted access to the PDF. I often read journal papers and most of them can only be accessed from inside an University network -- i.e. Google cannot access them (or at least their web PDF reader is not able to load them).