An information providing system enabled to have access to different contents from a printed image having a code buried therein on a medium to be printed. The information providing system comprises a code sending unit capable of sending either an image obtained by reading an image printed on the medium and having the code buried therein or the code extracted from the read image, an information providing unit for receiving either the read image or the code extracted from the read image, to send either information corresponding to the image or information for acquiring the information corresponding to the image, an information receiving/acquiring unit capable of receiving information for either receiving the information corresponding to the image or acquiring the information corresponding to the image, to acquire the information corresponding to the image on the basis of the acquiring information, and an information changing unit for changing the information corresponding to the image in the information providing unit.