Here are the main file formats you need to know:
|JPG or JPEG||Joint Photographic Experts Group||Stores images with lossy compression.|
|GIF||Graphic Interchange Format||Stores bitmapped images using lossless compression.|
|Portable Document Format||Shows documents the same way with any software that opens them.|
|MP3||Moving Picture Experts Group Audio Layer III||Digital audio using lossy compression.|
|MPEG||Moving Picture Experts Group||Represents videos using lossy compression.|
Compression is used to reduce the size of files. This is done to save storage space on portable devices and to reduce transmission and download times on networks like the internet. The disadvantage of compression is that they need to be decompressed which slows operation times.
There are 2 main types of compression: