Check the samples below to learn how to make an unsearchable PDF document in ASP.NET, C#, VB.NET and VBScript using ByteScout PDF Extractor SDK.
If you need to make a PDF searchable, please check this tutorial.
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using System; using System.IO; using Bytescout.PDFExtractor; namespace MakeUnsearchablePDF { 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 the document and write the result to the output stream unsearchablePDFMaker.MakePDFUnsearchable(Response.OutputStream); Response.End(); } } }
using Bytescout.PDFExtractor; namespace MakeUnsearchablePDF { class Program { static void Main() { // Create Bytescout.PDFExtractor.UnsearchablePDFMaker instance UnsearchablePDFMaker unsearchablePDFMaker = new UnsearchablePDFMaker(); unsearchablePDFMaker.RegistrationName = "demo"; unsearchablePDFMaker.RegistrationKey = "demo"; // Load sample PDF document unsearchablePDFMaker.LoadDocumentFromFile("sample1.pdf"); // 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; // Process the document unsearchablePDFMaker.MakePDFUnsearchable("result.pdf"); // Open the result PDF file in default associated application System.Diagnostics.Process.Start("result.pdf"); } } }
Imports Bytescout.PDFExtractor Module Module1 Sub Main() ' Create Bytescout.PDFExtractor.UnsearchablePDFMaker instance Dim unsearchablePDFMaker = New UnsearchablePDFMaker() unsearchablePDFMaker.RegistrationName = "demo" unsearchablePDFMaker.RegistrationKey = "demo" ' Load sample PDF document unsearchablePDFMaker.LoadDocumentFromFile("sample1.pdf") ' 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 ' Process the document unsearchablePDFMaker.MakePDFUnsearchable("result.pdf") ' Open the result PDF file in default associated application System.Diagnostics.Process.Start("result.pdf") End Sub End Module
' Create Bytescout.PDFExtractor.UnsearchablePDFMaker object Set unsearchablePDFMaker = CreateObject("Bytescout.PDFExtractor.UnsearchablePDFMaker") unsearchablePDFMaker.RegistrationName = "demo" unsearchablePDFMaker.RegistrationKey = "demo" ' Load sample PDF document unsearchablePDFMaker.LoadDocumentFromFile("sample1.pdf") ' 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 ' Process the document unsearchablePDFMaker.MakePDFUnsearchable("result.pdf")