An information processing apparatus capable of reducing troublesome work of a user when converting an image obtained by newly scanning a business form to a file. An information processing apparatus that sets, when converting the image to a file, a file name of the image. A preview image of the scanned original is displayed, and user selection of a character area on the preview image is detected. An item name candidate area is extracted based on location information of the character area selected by the user on the preview image, and a character string included in the item name candidate area is set as an item name of a character string included in the character area selected by the user. The set item name is displayed as a file name rule such that the set item name is selectable by the user.