mdparameter overrides the default dashboard setting and preserves the entire metadata of the image.
md-true. However, for most cases, preserving the color profile alone is sufficient for websites and apps, where users expect lighter images but with good color and none of the other metadata information that increase the image size, and consequently, the load time.
cpparameter overrides the default dashboard setting and preserves the color profile from the original master image to the final output image. All other image data is removed.