How to Extract Images from PDF in ASP.NET, C#, VB.NET and VBScript using PDF Extractor SDK

Extract images from PDF – source code samples below will help you to extract images from PDF files in ASP.NET, C#, VB.NET, and VBScript using PDF Extractor SDK.

Also, check this tutorial: How to extract images from PDF by pages.

Select your programming language:

• ASP.NET
• C#
• Visual Basic .NET
• VBScript (Visual Basic 6)

How to Extract Images from PDF in ASP.NET

The code snippet below can be used in PDF Extractor SDK to extract images from PDF in ASP.NET.

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Drawing.Imaging;
using System.IO;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Bytescout.PDFExtractor;

namespace ExtractAllImages
{
	public partial class _Default : System.Web.UI.Page
	{
		protected void Page_Load(object sender, EventArgs e)
		{
			// This test file will be copied to the project directory on the pre-build event (see the project properties).
			String inputFile = Server.MapPath("sample1.pdf");

			// Create Bytescout.PDFExtractor.ImageExtractor instance
			ImageExtractor extractor = new ImageExtractor();
			extractor.RegistrationName = "demo";
			extractor.RegistrationKey = "demo";
			
			// Load sample PDF document
			extractor.LoadDocumentFromFile("sample1.pdf");

			Response.Clear();

			int i = 0;

			// Initialize image enumeration
			if (extractor.GetFirstImage())
			{
				do
				{
					if (i == 0) // Write the fist image to the Response stream
					{
						string imageFileName = "image" + i + ".png";

						Response.Write("<b>" + imageFileName + "</b>");

						Response.ContentType = "image/png";
						Response.AddHeader("Content-Disposition", "inline;filename=" + imageFileName);

						// Write the image bytes into the Response output stream 
						Response.BinaryWrite(extractor.GetCurrentImageAsArrayOfBytes());
					}

					i++;

				} while (extractor.GetNextImage()); // Advance image enumeration
			}

			Response.End();
		}
	}
}

How to Extract Images from PDF in C#

The source code sample below would be used in PDF Extractor SDK to get images from PDF in C#.

using System;
using System.Drawing.Imaging;
using Bytescout.PDFExtractor;

namespace ExtractAllImages
{
	class Program
	{
		static void Main(string[] args)
		{
			// Create Bytescout.PDFExtractor.ImageExtractor instance
			ImageExtractor extractor = new ImageExtractor();
			extractor.RegistrationName = "demo";
			extractor.RegistrationKey = "demo";
			
			// Load sample PDF document
			extractor.LoadDocumentFromFile("sample1.pdf");

			int i = 0;

			// Initialize image enumeration
			if (extractor.GetFirstImage())
			{
				do
				{
					string outputFileName = "image" + i + ".png";

					// Save image to file
					extractor.SaveCurrentImageToFile(outputFileName, ImageFormat.Png);

					i++;

				} while (extractor.GetNextImage()); // Advance image enumeration
			}

			// Open first output file in default associated application
			System.Diagnostics.Process.Start("image0.png");
		}
	}
}

How to Extract Images from PDF in Visual Basic .NET

You can extract images from PDF in Visual Basic .NET using the following source code.

Imports Bytescout.PDFExtractor
Imports System.Drawing.Imaging

Class Program
    Friend Shared Sub Main(ByVal args As String())

        ' Create Bytescout.PDFExtractor.ImageExtractor instance
        Dim extractor As New ImageExtractor()
		extractor.RegistrationName = "demo"
		extractor.RegistrationKey = "demo"

        ' Load sample PDF document
        extractor.LoadDocumentFromFile("sample1.pdf")

        Dim i As Integer = 0

        ' Initialize image enumeration
        If extractor.GetFirstImage() Then
            Do
                Dim outputFileName As String = "image" & i & ".png"

                ' Save image to file
                extractor.SaveCurrentImageToFile(outputFileName, ImageFormat.Png)

                i = i + 1

            Loop While extractor.GetNextImage() ' Advance image enumeration
        End If

        ' Open first output file in default associated application
        System.Diagnostics.Process.Start("image0.png")

    End Sub
End Class

How to Extract Images from PDF in VBScript (Visual Basic 6)

Let’s extract images from PDF in VBScript (Visual Basic 6) – just copy-paste the code snippet below.

' Create Bytescout.PDFExtractor.ImageExtractor object
Set extractor = CreateObject("Bytescout.PDFExtractor.ImageExtractor")
extractor.RegistrationName = "demo"
extractor.RegistrationKey = "demo"

' Load sample PDF document
extractor.LoadDocumentFromFile("..\..\sample1.pdf")

i = 0

' Initialize image enumeration
If extractor.GetFirstImage() Then
    Do
        outputFileName = "image" & i & ".png"

        ' Save image to file
        extractor.SaveCurrentImageToFile outputFileName

        i = i + 1

    Loop While extractor.GetNextImage() ' Advance image enumeration
End If

' Open first output image in default associated application
Set shell = CreateObject("WScript.Shell")
shell.Run "image0.png", 1, false
Set shell = Nothing

Set extractor = Nothing