Introduction - If you have any usage issues, please Google them yourself
Base64 is based on 64 printable characters to represent binary data representation. Since 2 ^ 6 equals 64, so every six bits as a unit, which corresponds to a printable character. Three bytes are 24 bits, corresponding to four Base64 units, or 3 with the four bytes required to represent printable characters. It can be used as an e-mail transfer encoding.