Base64

Base64 articles: how the encoding turns bytes into text, why output grows by a third, and how to encode Unicode safely in browser JavaScript and Node.js.

Apr 17, 2026·8 min read

What is Base64 Encoding? A Developer's Guide

How Base64 turns bytes into text, why JWTs and email attachments rely on it, what the = padding means, and when encoding is the wrong tool for the job.

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Apr 17, 2026·9 min read

Base64 Encoding in JavaScript — Browser and Node.js

Base64 in JavaScript done properly: why btoa() throws on Unicode, Buffer in Node.js, URL-safe encoding, File objects, and a helper module for edge cases.

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