I\'m going to write a site that lets users to view pdf files but I don\'t want them to save the files to their own hard drive due to the copy right law. I\'m researching how
I hope I am not very late to reply. But here's is something you can do to prevent the users. Use iFrame to display your PDF and make sure that you are displaying using Google. I used the following code :
Here you can simply change the url=http://www.tutorialspoint.com/php/php_tutorial.pdf
and replace it by your own URL where you kept your PDF.