PeachImage
PeachImage.Formats.Jpeg.JpegEncoderOptions
JpegEncoderOptions.Subsampling Property
Chroma subsampling ratio. Defaults to 4:2:0, the common web default. Ignored for grayscale sources.
public PeachImage.Formats.Jpeg.JpegChromaSubsampling Subsampling { get; init; }