How To Rasterize A PDF Document In .NET

Imports Gnostice.PDFOne
Imports System.Drawing.Imaging

Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, _
                                  ByVal e As System.EventArgs) _
                    Handles Button1.Click

      'Create two PDFDocument instances for input and output documents
      Dim PDFDocument1 As New PDFDocument("your licence key")
      Dim PDFDocument2 As New PDFDocument("your licence key")

      Dim MetaFile1 As Metafile
      Dim PDFPage1, PDFPage2 As PDFPage
      Dim iCounter, iPageCount As Integer

      Try
        ' Load the input document and get its page count
        PDFDocument1.Load("input_doc.pdf")
        iPageCount = PDFDocument1.GetPageCount

        ' Iterate through all pages in the input document, export
        ' each page as a vector image, convert each vector image
        ' to a raster image, and add raster image to the output
        ' document.
        For iCounter = 1 To iPageCount

          ' Export current page as vector image
          MetaFile1 = PDFDocument1.GetPageMetafile(iCounter)

          ' Save meta file as a raster image
          MetaFile1.Save("image_of_page_#" & iCounter & ".jpg", _
                         ImageFormat.Jpeg)

          ' Release resources used by the vector image
          MetaFile1.Dispose()

          ' Access current page
          PDFPage1 = PDFDocument1.GetPage(iCounter)

          ' Create a new page with current page dimensions
          PDFPage2 = New PDFPage( _
                         PDFPage1.GetWidth(PDFMeasurementUnit.Inches), _
                         PDFPage1.GetHeight(PDFMeasurementUnit.Inches))
      
          ' Draw raster image on the new page
          PDFPage2.DrawImage("image_of_page_#" & iCounter & ".jpg", 0, 0)
      
          ' Add the new page to the output document
          PDFDocument2.AddPage(PDFPage2)
      
        Next
      
        ' Save rasterized output document
        PDFDocument2.Save("rasterized_output_doc.pdf")
    
    Catch ex As Exception
      MsgBox(ex.Message)
    Finally
      PDFDocument1.Close()
      PDFDocument1.Dispose()

      PDFDocument2.Close()
      PDFDocument2.Dispose()

      Me.Close()
    End Try

  End Sub
End Class

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Imaging;
using Gnostice.PDFOne;

namespace PN_Rasterize_PDF2 {

  public partial class Form1 : Form {

    public Form1() {
      InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e) {

      // Create two PDFDocument instances for input and output documents
      PDFDocument PDFDocument1 
            = new PDFDocument("your licence key");
      PDFDocument PDFDocument2
            = new PDFDocument("your licence key");

      PDFPage PDFPage1, PDFPage2;

      Metafile Metafile1;
      int iCounter, iPageCount;

      try {

        // Load the input document and get its page count
        PDFDocument1.Load("input_doc.pdf");
        iPageCount = PDFDocument1.GetPageCount();

        // Iterate through all pages in the input document, export
        // each page as a vector image, convert each vector image
        // to a raster image, and add raster image to the output
        // document.
        for (iCounter = 1; iCounter < iPageCount; iCounter++) {
          // Export current page as vector image
          Metafile1 = PDFDocument1.GetPageMetafile(iCounter);
          
          // Save meta file as a raster image
          Metafile1.Save(
                "image_of_page_#" + iCounter.ToString() + ".tiff",
                ImageFormat.Tiff);
          
          // Release resources used by the vector image
          Metafile1.Dispose();
          
          // Access current page
          PDFPage1 = PDFDocument1.GetPage(iCounter);
          
          // Create a new page with current page dimensions
          PDFPage2
             = new PDFPage(PDFPage1.GetWidth(PDFMeasurementUnit.Inches),
                           PDFPage1.GetHeight(PDFMeasurementUnit.Inches));
          
          // Draw raster image on the new page
          PDFPage2.DrawImage(
              "image_of_page_#" + iCounter.ToString() + ".tiff", 0, 0);
          
          // Add the new page to the output document
          PDFDocument2.AddPage(PDFPage2);
          
        }

        // Save rasterized output document
        PDFDocument2.Save("rasterized_output_doc.pdf");

      }
      catch (Exception Err) {
        MessageBox.Show(Err.Message);
      }
      finally {
        PDFDocument1.Close();
        PDFDocument1.Dispose();

        PDFDocument2.Close();
        PDFDocument2.Dispose();

        this.Close();
      }

    }

  }

}