1. A method of cropping a content-item, the method comprising: i. identifying within the content-item that is to be cropped a region of interest (ROI) that should be maintained within the content-item; ii. defining a line within the content-item that lies at an angle α to a predetermined reference line within the content-item, wherein the angle α is generally equal to tan −1 (target aspect ratio of cropped content-item); iii. selecting a cropped content-item such that opposite vertices of the cropped content-item lie on the line.