Crop & Focus Area
When an image (a FAL File) is rendered, the editor's crop
variant is resolved server-side: imaginator reads the reference's crop JSON and
fits the requested ratio inside the crop area, centered on the focus area.
The framing the editor chose is honoured and in local:async mode the URL
keys only on the reference uid (r…).
The ladder is bounded by the crop area, so a tightly-cropped region is never
upscaled. A src given as a path or plain file uid (f…) has no crop data
and is center-cropped to the ratio.
See also
The focus area is a default-on feature toggle (see Feature toggle). For the signed URL forms and the middleware, see The image endpoint & signing.