A method and apparatus for reproducing image data are provided. According to an embodiment the method comprises receiving PNG (Portable Network Graphics) file from an enhanced storage medium or a content server, the PNG file comprising an image data preceded by an image header and followed by an image trailer, the image header including frame size information, bit depth information, color type information, compression method information, filter method information and interface method information; storing the PNG file in a temporary data storage; and reproducing the image data based on at least one of information included in the image header, along with an associated audio/video data recorded in the enhanced storage medium.