Data compression is the compacting of information by reducing the number of bits which are stored or transmitted. Because of this, the compressed info will take substantially less disk space than the original one, so much more content could be stored on the same amount of space. There're different compression algorithms that function in different ways and with some of them only the redundant bits are removed, which means that once the information is uncompressed, there's no decrease in quality. Others delete unnecessary bits, but uncompressing the data later will result in lower quality in comparison with the original. Compressing and uncompressing content takes a huge amount of system resources, and in particular CPU processing time, so every web hosting platform that uses compression in real time needs to have adequate power to support this feature. An example how information can be compressed is to replace a binary code such as 111111 with 6x1 i.e. "remembering" the number of sequential 1s or 0s there should be instead of storing the entire code.