This is not normal image cropping, this is canvas background image cropping, achieved, without extensions, by pixelising the background to the foreground, resetting the canvas size to square, then drawing out the square image in pixels.
This is not normal image cropping, this is canvas background image cropping, achieved, without extensions, by pixelising the background to the foreground, resetting the canvas size to square, then drawing out the square image in pixels.