Is it possible to post a PDF file online and allow someone to view it but not be able to download the file to their hard drive?. I thought at first that this would be impossible since to be able to view the file you need to be able to download it. Is this assumption correct? I know some browsers are not set up to view a PDF file in the browser window so this might be an issue.
It is not possible to prevent downloads if you want someone to read it. It will always get saved to a temp location.