HOW TO: Open a Password Protected PDF

#1 Posted : Friday, December 1, 2017 5:56:14 PM(UTC)

Nick Villalobos

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Sometimes you may receive a PDF that you wish to view within a LEADTOOLS viewer but the PDF is locked, or contains a password to view it. Within the RasterCodecs Class, there is an Options Property that gets or sets the load and save options for the RasterCodecs. These options are categorized into groups corresponding to the image format they are applied to.

If you want to programmatically unlock the PDF then you will need to use the PDF Password options. See below for a simple code snippet on how you can unlock the PDF, then resave it without the password.

Code:

using (RasterCodecs codecs = new RasterCodecs())
{
    codecs.Options.Pdf.Load.Password = "PASSWORD OF THE PDF";

    RasterImage image = codecs.Load(@"Password.pdf");

    codecs.Save(image, @"NoPassword.pdf", RasterImageFormat.RasPdf, 0);
}

Nick Villalobos
Developer Support Engineer
LEAD Technologies, Inc.

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HOW TO: Open a Password Protected PDF