Browser resize keep proportions

[MarT0oo]

Hello,

I want to ask if there's a way to keep the proportions of the image while resizing the browser? This may need recalculating the scale and transitions of the image.

Here's my code:

$('#image-cropper').cropit({
    imageState: {
        src: defaultImage,
    },
    smallImage: 'allow',
    maxZoom: 5,
    initialZoom: 'image'
});