Make normal PDF to read only PDF.

Question

Hi, I have 100 PDF's in one folder. I want to make them read only in another folder. Please give me a code. Thank you.

Mohamed Abedallah · Answer

You can modify the security options of the PDF file itself. Using LEADTOOLS SDK, you can encrypt PDF files and disable options like (editing, copying, printing, etc). The code would be very simple as follows: string sourceFileName = @ "c:	emp\Leadtools.pdf" ; string destinationFileName = @ "c:	emp\LEAD_EncryptedNoPrint.pdf" ; PDFFile pdfFile = new PDFFile(sourceFileName); // Set the security options pdfFile.SecurityOptions = new PDFSecurityOptions(); pdfFile.SecurityOptions.UserPassword = "LEAD" ; //Disable printing pdfFile.SecurityOptions.PrintEnabled = false ; pdfFile.SecurityOptions.HighQualityPrintEnabled = false ; pdfFile.SecurityOptions.EncryptionMode = PDFEncryptionMode.RC128Bit; // Encrypt the file by saving it to the destination file pdfFile.Convert(1, -1, destinationFileName); For more information about the security options see this link: https://www.leadtools.com/help/leadtools/v20/dh/pdf/pdfsecurityoptions--members.html

Sai Reddy · Answer

Hi, Actually, we have to give it to others in encrypted format that others can not copy and convert it into other formats. Please help me to solve it. Thank you.

Sai Reddy · Answer

Thank you Rahul, I need to convert 100 PDF's from a folder at a time to encrypted format. Can you give me a loop. Thank you.

Rahul Prasad · Answer

try this code with spire.pdf.dll PdfDocument pdf = new PdfDocument(); pdf.LoadFromFile( "sample.pdf" ); //set encryption level pdf.Security.KeySize = PdfEncryptionKeySize.Key256Bit; //set an ownerpassword, which will forbid other users from processing the document pdf.Security.OwnerPassword = "test" ; pdf.SaveToFile( "result.pdf" );

Logesh Palani · Answer

Follow below link https://kb.nmsu.edu/page.php?id=74996

Sai Reddy · Answer

Hi, I have to give the PDF files to others with security.

Logesh Palani · Answer

Edit your Read and Write permission of the File by going to File Setting >> Security and change the permission