A1

using System;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Aspose.Pdf;

namespace Aspose.PDF.PPTX.Converter
{
    class Program
    {
        static void Main()
        {
            var license = new License();
            license.SetLicense(@"C:\Keys\Aspose.Total.lic");
            var pdfDocuments = new DirectoryInfo(@"C:\tmp\Presentations").GetFiles("*.pdf").Select(fi=>fi.Name);
            foreach (var pdfDocument in pdfDocuments)
            {
                ConvertPDFtoPPTX(pdfDocument, @"C:\tmp\Presentations");
            }

        }

        private static void ConvertPDFtoPPTX(string fileName, string outputPath)
        {
            var outputFileName = Path.Join(outputPath, Path.GetFileName(fileName));
            var document = new Aspose.Pdf.Document(fileName);

            foreach (var page in document.Pages)
            {
                RemoveAnnotations(page, Pdf.Annotations.AnnotationType.Ink);
                RemoveAnnotations(page, Pdf.Annotations.AnnotationType.Square);
            }

            var options = new Aspose.Pdf.PptxSaveOptions
            {
                SeparateImages = true
            };

            document.Save(outputFileName, options);
        }

        private static void RemoveAnnotations(Page page, Aspose.Pdf.Annotations.AnnotationType annotationType)
        {
            var annotations = page.Annotations.Where(a => a.AnnotationType == annotationType).ToArray();
            foreach (var annotation in annotations)
            {
                page.Annotations.Delete(annotation);
            }
        }

        private static void ShowProgressOnConsole(UnifiedSaveOptions.ProgressEventHandlerInfo eventInfo)
        {
            switch (eventInfo.EventType)
            {
                case ProgressEventType.TotalProgress:
                    Console.WriteLine(String.Format("{0}  - Conversion progress : {1}% .", DateTime.Now.TimeOfDay, eventInfo.Value.ToString()));
                    break;
                case ProgressEventType.ResultPageCreated:
                    Console.WriteLine(String.Format("{0}  - Result page's {1} of {2} layout created.", DateTime.Now.TimeOfDay, eventInfo.Value.ToString(), eventInfo.MaxValue.ToString()));
                    break;
                case ProgressEventType.ResultPageSaved:
                    Console.WriteLine(String.Format("{0}  - Result page {1} of {2} exported.", DateTime.Now.TimeOfDay, eventInfo.Value.ToString(), eventInfo.MaxValue.ToString()));
                    break;
                case ProgressEventType.SourcePageAnalysed:
                    Console.WriteLine(String.Format("{0}  - Source page {1} of {2} analyzed.", DateTime.Now.TimeOfDay, eventInfo.Value.ToString(), eventInfo.MaxValue.ToString()));
                    break;
                default:
                    break;
            }
        }
    }
}