Crop supports two precise shapes. Use an explicit area when the coordinates are known, or target dimensions plus an anchor when the crop should be positioned relative to the source.
Explicit area
{ "type": "crop", "area": { "x": 120, "y": 40, "width": 1200, "height": 800 }}Coordinates and dimensions are integer pixel values. The area form cannot be combined with width, height, or anchor.
Anchored crop
{ "type": "crop", "width": 1080, "height": 1080, "anchor": "center"}Supported anchors include the corners, edges, and center. An anchored crop requires both target dimensions and a supported anchor.
Crop is useful before conversion when the destination has a fixed ratio. For a cover-style square workflow, compare it with cover resize.