The document discusses various file formats for multimedia like PDF, TIFF, JPEG, MP3, MPEG and their compression methods. It explains lossless and lossy compression techniques for images, audio and video. For images, it describes monochrome, grayscale, GIF and JPEG compression. For audio, it discusses lossless formats like WAV and lossy formats like MP3. For video, it explains common formats like MOV, AVI and WMV.