If you like to protect your PDF files you can use password protection for your PDF files. In case if you like to protect your text content in your PDF files, you can protect by converting PDF file as SWF (Shock wave Flash) file.

Swftools provides PDF2SWF GUI tool which converts PDF file to SWF file, which prevents the copying of content finally your PDF file made as read only with PDF2SWF software.

This software is completely free to use and it has lot options you can adjust the font quality, image quality, polygon quality, image resolution and more.

PD2SWF tool provides viewer tab in options, which allows to select paging GUI for output file (SWF ).

PDF2SWF tool which also helps to export PDF files to SWF which is embeded in HTML file. Download PD2SWF tool via Swftools.