using System.Drawing;
using SixLabors.ImageSharp;

namespace tiff;

internal class Program
{
    static void Main(string[] args)
    {
        string fileName = "image.tiff";
        int width = 650;
        int height = 434;

        FileStream fs = new System.IO.FileStream(fileName, System.IO.FileMode.Open);
        Image img = Image.FromStream(fs);
        fs.Close();

        Graphics g = Graphics.FromImage(img);
        g.FillRectangle(Brushes.Black, 5, 5, 100, 30);
        g.DrawRectangle(Pens.Black, 5, 5, 100, 30);
        g.Dispose();

        img.Save("new.tiff", System.Drawing.Imaging.ImageFormat.Tiff);
    }
}