Use Grayscale to render images in shades of black, white, and gray.
For example, if you have the following image:
You can use the Grayscale transformation to create a black, white, and gray image:
If you add the IMQuery transformation to a policy, use the
im variable, and select Grayscale, you can use a query string to create a black, white and gray version of any image using this policy. See Syntax and Examples for the syntax for the query string parameter.
Updated about 2 years ago