ZIP file is an archive file format that supports lossless data compression. Lossless is a fairly popular data compression method that is used in a number of different applications. Files can become corrupted when they are transferred over the internet in an uncompressed format. It enables devices to transmit or store the same amount of data in fewer bits.
A Unicode character requires between one and four bytes of storage, depending on the encoding format used. Hence, a character requires one byte of storage.