Try using IronSoftware.Drawing.AnyBitmap[] instead of Microsft System.Drawing.Bitmap[] but RotateFlip options is missing.

[busratmaca]

We have implemented such a solution, any suggestion on this is welcome

public static class BitmapExtensions
    {
        public static void RotateFlip(ref AnyBitmap bitmap, float degree = 0)
        {
            if (degree <= 0 || degree >= 360)
                return;

            SixLabors.ImageSharp.Image image = (SixLabors.ImageSharp.Image)bitmap;
            image.Mutate(x => x.Rotate(degree));

            bitmap = image;
        }
    }

[mbkrispy]

Hello @busratmaca, this has been implemented and will be part of the next release on NuGet.

Source: #43