height
Specify the height for the output image measured in pixels.
If only height parameter is specified without defining the width (with width parameter) the output image will be resized according to the specified height not altering the original image aspect ratio.
width
Specify a height of 600 pixels with height=600 param:
600
height=600
GET https://assets.imglab-cdn.net/flowers.jpeg?height=600 x px
https://assets.imglab-cdn.net/flowers.jpeg?height=600