https://github.com/fengyuanchen/cropper/blob/master/README.md
Options
See the available options of Cropper.js.
$().cropper(options);
https://github.com/fengyuanchen/cropperjs#options
aspectRatio
- Type:
Number - Default:
NaN
Define the fixed aspect ratio of the crop box. By default, the crop box is free ratio.