Base64
An encoding that represents binary data as ASCII text.
Base64 is a binary-to-text encoding that represents arbitrary binary data using 64 printable ASCII characters (A–Z, a–z, 0–9, + and /). It's used to safely embed binary content — images, files, credentials — inside text-based formats like JSON, HTML data URIs, and email. Base64 is an encoding, NOT encryption: it provides no security and is trivially reversible. It also inflates size by about 33%.