Here, the level of compression can be set. The higher the loss ratio, the smaller the file size will be. However, the more lossy an image becomes, the more information will be lost. This causes images to appear pixilated.
This setting controls the brightness of a generated JPEG file. The higher the value, the darker the image will become.
The method of conversion used to convert files. Different algorithms and documents will produce different output, typically Floyd-Steinberg will produce the most favorable results