Encodingv1.0.0

@sopkit/base64

Premium Unicode-safe and URL-safe Base64 encoder and decoder for both Browser and Node.js.

Overview

Standard JavaScript btoa and atob functions fail on multi-byte UTF-8 Unicode characters (like Emojis). @sopkit/base64 fixes this natively, providing complete encoding safety and additional URL-Safe encoders.

Installation

npm install @sopkit/base64

Quick Start (ESM)

import { encode, decode, urlEncode, urlDecode } from "@sopkit/base64";

const enc = encode("SopKit 🚀"); // "U29wS2l0IPCZiQ=="
const dec = decode(enc); // "SopKit 🚀"

API Reference

encode(input: string): string

Encodes string into standard Base64 representation.

decode(input: string): string

Decodes standard Base64 string back into UTF-8 representation.

urlEncode(input: string): string

Encodes string into URL-safe Base64 representation.

urlDecode(input: string): string

Decodes URL-safe Base64 representation.

Rivals Comparison

How @sopkit/base64 compares against the typical industry standard (js-base64):

Unicode Safe

Built-in (Native standard fix)Requires custom buffer hacks

URL Safe mode

Supported (urlEncode / urlDecode)Manual character replace needed

Bundle size

1.05 KB (minified)4.8 KB

SopKit Guarantee

All libraries in the SopKit ecosystem are guaranteed to have zero server calls, zero analytical trackers, and 100% client-side privacy-first execution.