Base64

Understand Base64 encoding, decoding, variants, and use cases in web development. Practical guides and tools at jsonparser.ai. Practical guides and tools at jsonparser.ai.

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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