On Tue, Aug 31, 2010 at 04:48:56PM +0530, Shivraj Thorat wrote: > 1) How to creat non printable pdf files?
If you are scanning paper documents, then the scanning software may already provide this option. If the documents are submitted as PDFs, then you might wish to consider Pdftk (which I have not yet used, but it looks promising). The documentation says it can manipulate various document permissions, including both high-quality and degraded printing. If they are submitted as word-processing documents, then (as another poster suggested) you could use OpenOffice to convert them, but I think it would be better in the future if the candidates can be taught that rendering a finished document in a final-form format such as PDF is part of the process of submission. In any case, you will want to add an owner password to the document, or else anyone can change its permissions. This should not prevent anyone reading it; my understanding is that presentation of the owner password only authenticates bypassing the permissions, while the user password (which may be defaulted, thus not needed by the reader) encrypts the content. (See the standard IS32000-1:2008 if you want the gory details. It's slightly complex.) Notice that there is no way for PDF to actually prevent a determined person printing a "protected" document that he can read. Standard-conforming software will respect the owner's wishes as expressed in the document's permissions. > 2) What are the software available in both commercial and open source type? http://en.wikipedia.org/wiki/List_of_PDF_software looks like a good place to start your search. While you are processing these PDFs, you may also want to "optimize" (or "linearize") them, to make them more readily useful across a network. There is some interest in supporting byte-range access to large PDFs in DSpace, but I understand that this requires an optimized form of the document. Ghostscript includes a tool 'pdfopt' which does this. -- Mark H. Wood, Lead System Programmer [email protected] Balance your desire for bells and whistles with the reality that only a little more than 2 percent of world population has broadband. -- Ledford and Tyler, _Google Analytics 2.0_
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