MPEG ( Moving Picture Expert Group ) italic A set of standards and file format for Compression of digital Video and audio data. JPEG ( Joint Photographic Expert Group ) italic A set of standards and file format forpressing picture so they can be stored or sent by e-mail more easily. MP3 A file extension for (MPEG) audio Layer-3 A set of Standards for Compressing and Downloading audio files from the internet. MP4 MP4 is a file format created by the Moving Picture Experts Group (MPEG) as a multimedia container format designed to store audiovisual data. The MP4 is largely replacing earlier multimedia file formats and creating some changes in the way that vendors sell audiovisual files to the public. PDF ( Portable Document Format ) italic A file format that makes it possible to display s and graphics in same fixed layout on anyputer screen. GIF ( Graphics Interchange Format ) italic The Graphics Interchange Format was developed in 1987 at the request of Compuserve who needed a platform independent image format that was suitable for transfer across slow connections. It is apressed (lossless) format (it uses the LZW pression) andpresses at a ratio of between 31 and 51 PNG ( Portable Network Graphics Format ) italic A number of people banded together and created apletely patent-free graphics format called PNG (pronounced ping ) the Portable Network Graphics format. PNG is superior to GIF in that it has betterpression and supports millions of colours. PNG files end in a .png italic suffix. ** If this answer will be helpful to you then please upvote it . Thank you !! **