Base64

Understand Base64 encoding, decoding, variants, and use cases in web development.

Apr 17, 2026·8 min read

What is Base64 Encoding? A Developer's Guide

Base64 is a binary-to-text encoding scheme used everywhere from JWT tokens to email attachments. Here's what it is, how the algorithm works, and when you actually need it.

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Apr 17, 2026·9 min read

Base64 Encoding in JavaScript — Browser and Node.js

btoa() and atob() work great until you hit a Unicode string. Here's the complete guide to Base64 in JavaScript — browser APIs, Node.js Buffer, URL-safe encoding, File objects, and a utility module that handles all the edge cases.

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