Convert PDF to 1-bit black and white PNG in C# and VB .Net

Convert PDF to 1-bit black and white PNG in C# and VB .Net.


Complete code.

using System;
using System.IO;

namespace Sample
{
    class Sample
    {
        static void Main(string[] args)
        {
            //How to convert PDF to 1-bit black and white PNG
            SautinSoft.PdfFocus f = new SautinSoft.PdfFocus();
	    	//this property is necessary only for registered version
		    //f.Serial = "XXXXXXXXXXX";

            string pdfPath = @"..\..\simple text.pdf";
            string imagePath = Path.ChangeExtension(pdfPath, ".png");

            f.OpenPdf(pdfPath);

            if (f.PageCount > 0)
            {
                //save 1st page to png file, 120 dpi
                f.ImageOptions.ImageFormat = System.Drawing.Imaging.ImageFormat.Png;
                f.ImageOptions.Dpi = 120;
                //Make "Black and White 1-bit indexed" image
                f.ImageOptions.ColorDepth = SautinSoft.PdfFocus.CImageOptions.eColorDepth.BlackWhite1bpp;

                if (f.ToImage(imagePath, 1) == 0)
                {
                    // 0 - converting successfully                
                    // 2 - can't create output file, check the output path
                    // 3 - converting failed
                    System.Diagnostics.Process.Start(imagePath);
                }
            }
        }
    }
}

Download.

        
            Imports System.IO
Imports System.Drawing.Imaging
Imports System.Collections.Generic
Imports SautinSoft

Module Sample

    Sub Main()
        'How to convert PDF to 1-bit black and white PNG
        Dim f As New SautinSoft.PdfFocus()
        'this property is necessary only for registered version
        'f.Serial = "XXXXXXXXXXX"

        Dim pdfPath As String = "..\simple text.pdf"
        Dim imagePath As String = Path.ChangeExtension(pdfPath, ".png")

        f.OpenPdf(pdfPath)

        If f.PageCount > 0 Then
            'save 1st page to png file, 120 dpi
            f.ImageOptions.ImageFormat = System.Drawing.Imaging.ImageFormat.Png
            f.ImageOptions.Dpi = 120
            'Make "Black and White 1-bit indexed" image
            f.ImageOptions.ColorDepth = SautinSoft.PdfFocus.CImageOptions.eColorDepth.BlackWhite1bpp

            If f.ToImage(imagePath, 1) = 0 Then
                ' 0 - converting successfully                
                ' 2 - can't create output file, check the output path
                ' 3 - converting failed
                System.Diagnostics.Process.Start(imagePath)
            End If
        End If
    End Sub
End Module

Download.


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