static void Main(string[] args)
Console.WriteLine("argument invalid");
int from = int.Parse(args[1]);
int to = int.Parse(args[2]);
Document document = new Document(PageSize.A4, 0f,0f,0f,0f);
using (var stream = new FileStream(fileName, FileMode.Create, FileAccess.Write, FileShare.None))
PdfWriter.GetInstance(document, stream);
foreach (var i in Enumerable.Range(from, to))
var link = string.Format(args[0], i);
var image = Image.GetInstance(new Uri(link));
image.ScaleAbsolute(PageSize.A4.Width, PageSize.A4.Height);
Console.WriteLine("done");