Convert PDF to Black and White - VB.NET
PDF Extractor SDK sample in VB.NET demonstrating ‘Convert PDF to Black and White’
Module1.vb
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")
'maker.ImageFormat = EmbeddedImageFormat.JPEG; ' use JPEG for smaller PDF file, but be ready to compression artefacts
'maker.JPEGQuality = 75; // JPEG quality (1 - 100)
unsearchablePDFMaker.RenderingResolution = 300 ' larger resolution - longer processing And larger PDF file size
' Enable Black And White mode
unsearchablePDFMaker.Grayscale = True
' Process the document
unsearchablePDFMaker.MakePDFUnsearchable("result.pdf")
' Cleanup
unsearchablePDFMaker.Dispose()
' Open the result PDF file in default associated application
System.Diagnostics.Process.Start("result.pdf")
End Sub
End Module
Resources.Designer.vb
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