Introduction

public static void ModifyImageSizeAndPosition()
{
  Console.WriteLine( "=== MODIFY IMAGE SIZE AND POSITION ===" );
  var filename = "documentWithImage.pdf";
  var outputFileName = "ModifyImageSizeAndPosition.pdf";
  var outputPath = ImagesSample.ImagesSampleOutputDirectory + outputFileName;

  // Load a PdfDocument.
  using( var pdfDoc = PdfDocument.Load( ImagesSample.ImagesSampleResourcesDirectory + filename ) )
  {
    // Gets the first Page.
    var page1 = pdfDoc.Pages.First();

    // Gets the first image from the first page.
    var image = page1.Images[ 0 ];

    // Modify position, size and rotation of that image.
    image.Bounds = new Rectangle( 100, 150, 400, 400 );
    image.RotationAngle = 45d;

    // Saves the output document.
    pdfDoc.SaveAs( outputPath );
    Console.WriteLine( $"Info exported to path: {outputFileName}" );
  }
}