compression

Data compression is used to reduce the bit size of files, without necessarily affecting its quality. Its useful on the web, as the lower a file is in size, the faster it will download. For example, a CSS file could contain attributes of a HTML class written separately, like this: .class {font-size:12px;} .class {font-color:red;}. A compressed version would look like this .class {font-size:12px; font color:red;}. Images can also be compressed. This process is referred to as Image Optimization.

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