Introduction

public static void GetHyperlinks()
{
  Console.WriteLine("=== GET HYPERLINKS ===");
  string filename = "The Amazing World of Wildlife.pdf";

  // Load a pdf document.
  using( var pdfDoc = PdfDocument.Load( HyperlinksSample.HyperlinksSampleResourcesDirectory + filename ) )
  {
    var outputFileName = "GetHyperlinks.pdf";
    var outputPath = HyperlinksSample.HyperlinksSampleOutputDirectory + outputFileName;

    // Create a pdf document.
    using( var pdfoutput = PdfDocument.Create( outputPath ) )
    {
      // Get the first page.
      var page1 = pdfoutput.Pages.First();

      // Add Title.
      var textStyle = TextStyle.WithFont( pdfoutput.Fonts.GetStandardFont( StandardFontType.Helvetica ), 15d );
      page1.AddParagraph( "Getting hyperlinks", textStyle, new ParagraphStyle( ParagraphHorizontalAlignment.Center ) );

      var exportData = new ExportInfoToPdf();
      // Add text.
      exportData.AddLine( pdfoutput, $"Printing Hyperlinks from: {filename}\n\n", Color.Red );

      bool hasHyperlinks = false;
      foreach( var page in pdfDoc.Pages )
      {
        // Get hyperlinks from loaded document pages.
        foreach( var hyperlink in page.Hyperlinks )
        {
          // Add Hyperlink Url.
          exportData.AddLine( pdfoutput, $"{hyperlink.Url}" );
          hasHyperlinks = true;
        }
      }

      if( hasHyperlinks )
      {
        // Save the output document.
        pdfoutput.Save();
        Console.WriteLine( $"Info exported to path: {outputFileName}" );
      }
      else
      {
        Console.WriteLine( "No Hyperlinks found in this document." );
      }
    }
  }
}