Abstract: Disclosed herein is a system for extracting the reduced information of multimedia digital content. The system includes an image variation-related color table database, a volume/tempo variation-related color table database, a default value and environment information database, digital content reduced information extraction means, and storage means. The digital content reduced information extraction means extracts the reduced information of multimedia digital content, which is received when the multimedia digital content, including moving image data, audio data and/or image data. The storage means stores the pieces of reduced information, including thumbnail images, image clips/low-quality images, video clips, audio visualization moving images, audio representative colors, variation-related colors, and image representative colors, which are extracted by the digital content reduced information extraction means.