Methods and apparatus for selecting a paper source for image printing are provided. A user accesses a service available from a print server for printing an image. The print server may download the image from a storage server over a network. The print server automatically identifies a list of paper sizes corresponding with a list of available paper sources, and selects a scaling ratio for fitting the image into one of the paper sizes. The print server generates a scaled image based on the selected scaling ratio and sends the scaled image to a printer for the scaled to be printed from a selected paper source.