ByteScout PDF Extractor SDK – ASP.NET – Make PDF Unsearchable

ByteScout PDF Extractor SDK – ASP.NET – Make PDF Unsearchable

Default.aspx.cs

using System;
using System.IO;
using System.Web.UI;
using Bytescout.PDFExtractor;

namespace MakePDFUnsearchable
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            String inputFile = Server.MapPath(@".\bin\sample1.pdf");

            // Create Bytescout.PDFExtractor.UnsearchablePDFMaker instance
            UnsearchablePDFMaker unsearchablePDFMaker = new UnsearchablePDFMaker();
            unsearchablePDFMaker.RegistrationName = "demo";
            unsearchablePDFMaker.RegistrationKey = "demo";

            // Load sample PDF document
            unsearchablePDFMaker.LoadDocumentFromFile(inputFile);

            // Set PDF rendering resolution to 150 DPI. Higher value - better quality, but larger output file.
            unsearchablePDFMaker.RenderingResolution = 150;
            // Set embedded images format
            unsearchablePDFMaker.ImageFormat = EmbeddedImageFormat.PNG;

            Response.Clear();
            Response.ContentType = "application/pdf";
            Response.AddHeader("Content-Disposition", "attachment;filename=result.pdf");

            // Process document and write result to temporary stream.
            byte[] resultBytes;
            using (MemoryStream tempStream = new MemoryStream())
            {
                unsearchablePDFMaker.MakePDFUnsearchable(tempStream);
                resultBytes = tempStream.ToArray();
            }

            // Write result bytes to the output stream
            Response.BinaryWrite(resultBytes);

            Response.End();
        }
    }
}

Web.config

<?xml version="1.0"?>
<configuration>
  <appSettings/>
  <connectionStrings/>
  <system.web>
    <!-- 
            Set compilation debug="true" to insert debugging 
            symbols into the compiled page. Because this 
            affects performance, set this value to true only 
            during development.
        -->
    <compilation debug="true" targetFramework="4.0"/>
    <!--
            The <authentication> section enables configuration 
            of the security authentication mode used by 
            ASP.NET to identify an incoming user. 
        -->
    <authentication mode="Windows"/>
    <!--
            The <customErrors> section enables configuration 
            of what to do if/when an unhandled error occurs 
            during the execution of a request. Specifically, 
            it enables developers to configure html error pages 
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
        -->
    <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/>
  </system.web>
</configuration>

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