Convert PPT to Word in C#

using Aspose.Slides;
using Aspose.Words;
using System.IO;

using var presentation = new Presentation("template.ppt");
var wordDocument = new Aspose.Words.Document();
var documentBuilder = new DocumentBuilder(wordDocument);

foreach (var slide in presentation.Slides)
{
    using var slideImage = slide.GetImage(1f, 1f);
    using var imageStream = new MemoryStream();
    slideImage.Save(imageStream, ImageFormat.Png);
    imageStream.Position = 0;

    documentBuilder.InsertImage(imageStream);
    documentBuilder.InsertBreak(BreakType.PageBreak);
}

wordDocument.Save("document.docx");