Base64 is a way to represent binary data (like images or files) as text. It's used everywhere - in emails, APIs, data storage. The idea is that any type of data can be represented as text characters.

Why Should You Care?

Ever embedded an image directly in HTML? That's Base64! It's also how API tokens work sometimes. Understanding Base64 helps you understand how a lot of modern web stuff works under the hood.

I encode and decode Base64 all the time for work. It's one of those things you don't think about until you need it, and then it's super handy.