Base64 Encoder

Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable ASCII characters (A–Z, a–z, 0–9, +, /). It was designed to safely transmit binary data over channels that only support text, such as email (MIME) and HTTP headers. Common uses include encoding HTTP Basic Authentication credentials ("username:password" → Base64), embedding images as data URIs in CSS and HTML, encoding binary payloads in JSON APIs that don't support raw bytes, and constructing the header and payload portions of JSON Web Tokens (JWT). Base64 is an encoding scheme, not an encryption scheme — the original data can be trivially recovered by anyone with the encoded string.