🔧 Base64 Encoding Explained: What It Is, Why It Exists, and When to Use It

Base64 encoding is one of those things that appears everywhere — in JWT tokens, in email attachments, in data URIs, in HTTP Basic Auth headers — but is rarely explained clearly. Here is a practical guide to what it is, why it was invented, and when you should and should not use it.




What Is Base64?


Base64 is an encoding scheme that...