Computer program that copies file(s) into a compressed format
Also known as data compression software · compression program · compressor · compression tool · data compression tool · compression utility
16 statements · 13% with external sources · numbers in brackets are citations
5 identifiers linking compression software across the web's reference databases
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In information theory, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by removing unnecessary or less important information. Typically, a device that performs data compression is referred to as an encoder, and one that performs the reversal of the process (decompression) as a decoder.