MagicScaler.cs

using PhotoSauce.MagicScaler;

const int size = 150;
const int quality = 75;

var settings = new ProcessImageSettings() {
    Width = size,
    Height = size,
    ResizeMode = CropScaleMode.Max,
    SaveFormat = FileFormat.Jpeg,
    JpegQuality = quality,
    JpegSubsampleMode = ChromaSubsampleMode.Subsample420
};

using (var output = new FileStream(OutputPath(path, outputDirectory, MagicScaler), FileMode.Create))
{
    MagicImageProcessor.ProcessImage(path, output, settings);
}