An information processing apparatus comprises: a first display unit configured to display a preview screen including a preview image based on page data included in book data; a setting unit configured to set a spread attribute for laying out one page data included in the book data over a plurality of pages; and a display unit configured to display, if the page data set with the spread attribute does not satisfy a spread condition, information indicating that the spread condition is not satisfied in association with a preview image based on the page data set with the spread attribute together with the preview image based on the page data set with the spread attribute.