PDF Encryption

PDF encryption enables you to securely protect the content of your PDF file from unwanted viewers and against unwanted actions like printing, selecting text, etc.

Following example shows how to convert any presentation to encrypted PDF file with restricted permissions which requires a password to be decrypted, viewed and, optionally, modified.

Password and owner password should be specified in the appropriate text box.

For more information about PDF encryption in GemBox.Presentation, see PdfSaveOptions.Permissions remarks.

Screenshot
PowerPoint Library for C# / VB.NET Screenshot

See the full code below, use Run Example to execute.

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using System.IO;
using GemBox.Presentation;

class Sample
{
    [STAThread]
    static void Main(string[] args)
    {
        // If using Professional version, put your serial key below.
        ComponentInfo.SetLicense("FREE-LIMITED-KEY");

        PresentationDocument presentation = PresentationDocument.Load("Reading.pptx");

        string password = "pass";
        string ownerPassword = "";

        var options = new PdfSaveOptions()
        {
            DocumentOpenPassword = password,
            PermissionsPassword = ownerPassword,
            Permissions = PdfPermissions.None
        };

        presentation.Save("PDF Encryption.pdf", options);
    }
}
Imports System.IO
Imports GemBox.Presentation

Module Samples

    Sub Main()

        ' If using Professional version, put your serial key below.
        ComponentInfo.SetLicense("FREE-LIMITED-KEY")

        Dim presentation As PresentationDocument = PresentationDocument.Load("Reading.pptx")

        Dim password As String = "pass"
        Dim ownerPassword As String = ""

        Dim options = New PdfSaveOptions() With
        {
            .DocumentOpenPassword = password,
            .PermissionsPassword = ownerPassword,
            .Permissions = PdfPermissions.None
        }

        presentation.Save("PDF Encryption.pdf", options)

    End Sub

End Module