chart.HasChartTitle = false;

picture.Line.Visible = false or picture.Line.Weight = 0

Image img = shape.SaveToImage();
shape.SaveToImage(string fileName);
shape.SaveToImage(string fileName, ImageFormat imageFormat);
shape.SaveToImage(Stream fileStream);
shape.SaveToImage(Stream fileStream, ImageFormat imageFormat);

Workbook book = new Workbook();
            book.LoadFromFile(input);
            foreach (Worksheet sheet in book.Worksheets)
            {
                foreach (ExcelPicture picture in sheet.Pictures)
                {
                    picture.Compress(30);
                }
            }
            book.SaveToFile(result, ExcelVersion.Version97to2003);

PdfSignature signature = new PdfSignature(doc, page, cert, "123456");
signature.ConfigureCustomGraphics(DrawGraphics);
 private void DrawGraphics(PdfCanvas g)
{
   PointF point1 = new PointF(10, 20);
   PointF point2 = new PointF(25, 50);
   PointF point3 = new PointF(60, 20);
   PointF[] pntArr = { point1, point2, point3 };
   PdfRGBColor color = new PdfRGBColor(Color.Red);
   g.DrawPolygon(new PdfPen(color), pntArr);
   g.DrawRectangle(new PdfPen(Color.Green), new RectangleF(70, 10, 20, 30));
   g.DrawLine(new PdfPen(Color.Blue), new PointF(120, 50), new PointF(95, 5));
   g.DrawLine(new PdfPen(Color.Blue), new PointF(100, 30), new PointF(130, 20));
 }

String zipPath= "C:/test.zip";
Presentation ppt = new Presentation();
byte[] data = File.ReadAllBytes(zipPath);
Rectangle rec = new Rectangle(80, 60, 100, 100);
//The first parameter needs to be passed the complete file name 
IOleObject ole = ppt.Slides[0].Shapes.AppendOleObject("test.zip", data, rec);
ole.ProgId = "Package";
Image image = Image.FromFile(@"E:\demoProducts\Image\logo.png");
IImageData oleImage = ppt.Images.Append(image);
ole.SubstituteImagePictureFillFormat.Picture.EmbedImage = oleImage;
ppt.SaveToFile(@"result.pptx", Spire.Presentation.FileFormat.Pptx2013);

BarcodeScan task1 = new BarcodeScan();
task1.Scan(bitmap, rectangle, barcodeType);