Base64

Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format using a set of 64 characters (A-Z, a-z, 0-9, +, /).

It is commonly used to encode binary data for transmission over text-based protocols such as HTTP, email (MIME), and JSON (data URLs). Every 3 bytes of binary data are represented as 4 Base64 characters.