How to create or extract images from slides of PDF using Aspose.pdf ,C# ,DotNet

Creating images from slides of PDF:

#region "Description"

/*

    * PDF slides can be exported into images using CreateImagesFromPDF() method given below

    * Need to use Aspose.Pdf library reference

 */

#endregion

#region "Methods"

Method Name: CreateImagesFromPDF()

/// <summary>

/// Given Function takes input as pdf document stream, image saving folder path and returns created images path list

/// </summary>

/// <param name="SourceFileStream">PDF document file stream</param>

/// <param name="SavingPath">Image saving path</param>

/// <returns>List of paths for created images in order</returns>

public Dictionary<int, string> CreateImagesFromPDF(Stream SourceFileStream, string SavingPath)

{

    string docPath = SavingPath + "\\";

    string documentPath = "";

    Dictionary<int, string> pageImages = new Dictionary<int, string>();

    SourceFileStream.Position = 0;

    Aspose.Pdf.Document docPDF = new Aspose.Pdf.Document(SourceFileStream);

    string filename = docPDF.FileName;

    using (MemoryStream htmlStream = new MemoryStream())

    {

        for (int pageCount = 1; pageCount <= docPDF.Pages.Count; pageCount++)

        {

            documentPath = docPath + filename + "_image" + (pageCount - 1).ToString() + ".jpg";

            using (FileStream imageStream = new FileStream(documentPath, FileMode.Create))

            {

                //create JPEG device with specified attributes

                //Width, Height, Resolution, Quality

                //Quality [0-100], 100 is Maximum

                //create Resolution object

                Aspose.Pdf.Devices.Resolution resolution = new Aspose.Pdf.Devices.Resolution(100);

                //JpegDevice jpegDevice = new JpegDevice(500, 700, resolution, 100);

                Aspose.Pdf.Devices.JpegDevice jpegDevice = new Aspose.Pdf.Devices.JpegDevice(resolution, 100);

                //convert a particular page and save the image to stream

                jpegDevice.Process(docPDF.Pages[pageCount], imageStream);

                //close stream

                imageStream.Close();                       

                if (!pageImages.ContainsKey(pageCount - 1))

                    pageImages.Add(pageCount - 1, string.Empty);

                pageImages[pageCount - 1] = documentPath;

            }

        }

    }

    return pageImages;

}

#endregion