First of all if it can be seen on the Internet the content can be downloaded. Do not think there is ever a situation where you can prevent content from being downloaded. (If you want proof send me the and I will send you back an OCR'ed PDF) Snagit is one of a handful of free tools for overriding content restrictions like this. Second of all the issue with the resolution stems from the fact that Googlepresses the size of the PDF for viewers so as to fit the maximum amount of the first page in the viewable window. It does not actually alter the original resolution of the PDF which remains intact.