Decode Base64 Javascript Online with Our Free Tool

Below is a list of libraries that support Base64 encoding and decoding in JavaScript along with sample code for each library.

1. JavaScript Standard Library

JavaScript provides the btoa and atob functions for Base64 encoding and decoding in the browser environment.

<script>
const originalString = "test input";

// Encode
const encodedString = btoa(originalString);
console.log("Encoded: " + encodedString);

// Decode
const decodedString = atob(encodedString);
console.log("Decoded: " + decodedString);
</script>

    

2. Node.js Buffer

Node.js provides the Buffer class which supports Base64 encoding and decoding.

const originalString = "test input";

// Encode
const encodedString = Buffer.from(originalString).toString('base64');
console.log("Encoded: " + encodedString);

// Decode
const decodedString = Buffer.from(encodedString, 'base64').toString('utf-8');
console.log("Decoded: " + decodedString);

    

3. js-base64

The js-base64 library provides utilities for Base64 encoding and decoding in both browser and Node.js environments.

<script src="https://cdn.jsdelivr.net/npm/js-base64/base64.min.js"></script>
<script>
const originalString = "test input";

// Encode
const encodedString = Base64.encode(originalString);
console.log("Encoded: " + encodedString);

// Decode
const decodedString = Base64.decode(encodedString);
console.log("Decoded: " + decodedString);
</script>

    

In Node.js:

const { Base64 } = require('js-base64');

const originalString = "test input";

// Encode
const encodedString = Base64.encode(originalString);
console.log("Encoded: " + encodedString);

// Decode
const decodedString = Base64.decode(encodedString);
console.log("Decoded: " + decodedString);

    

Add the dependency using npm:

npm install js-base64
    

4. CryptoJS

CryptoJS is a widely-used cryptographic library that also supports Base64 encoding and decoding.

<script src="https://cdn.jsdelivr.net/npm/[email protected]/crypto-js.js"></script>
<script>
const originalString = "test input";

// Encode
const encodedString = CryptoJS.enc.Base64.stringify(CryptoJS.enc.Utf8.parse(originalString));
console.log("Encoded: " + encodedString);

// Decode
const decodedString = CryptoJS.enc.Base64.parse(encodedString).toString(CryptoJS.enc.Utf8);
console.log("Decoded: " + decodedString);
</script>

    

5. Buffer in React Native

In React Native, you can use the Buffer class from the buffer library for Base64 encoding and decoding.

import { Buffer } from 'buffer';

const originalString = "test input";

// Encode
const encodedString = Buffer.from(originalString).toString('base64');
console.log("Encoded: " + encodedString);

// Decode
const decodedString = Buffer.from(encodedString, 'base64').toString('utf-8');
console.log("Decoded: " + decodedString);

    

Add the dependency using npm:

npm install buffer
    

Welcome to our Decode Base64 Javascript Online tool, the ultimate solution to Decode Base64 Javascript Online quickly and easily. Whether you need to convert binary data for safe transmission or storage, our tool provides a simple and efficient way to encode your data to Base64 format.

Why Use Base64 Encoding?

Base64 encoding is a method of converting binary data into a text format using 64 characters. This encoding scheme is especially useful when you need to transfer or store data over media designed to handle text, such as email or JSON files. Base64 ensures your data remains intact and unmodified during transport.

Key Features of Our Base64 Encoding Tool

Simple and Fast Encoding

Our tool makes it incredibly easy to Decode Base64 Javascript Online. Simply enter your data, click the "Encode" button, and get your Base64 encoded result instantly. No complex configurations or technical knowledge required.

Secure and Private

We prioritize your privacy and data security. All communications with our servers are encrypted using SSL connections. We do not store or inspect the contents of your encoded data, ensuring complete confidentiality.

Free to Use

Our Base64 encoding tool is completely free. You don’t need to download any software or register for an account. Access our online tool anytime, anywhere, without any cost.

Advanced Options

Character Set Selection

While Base64 encoding does not inherently include character set information, our tool allows you to specify the character set used during encoding. Commonly, UTF-8 is used, but other options are available. If unsure, try the auto-detect option for the best results.

Live Encoding Mode

Enable live mode to see your data encoded in real-time using your browser’s built-in JavaScript functions. This feature supports the UTF-8 character set and does not send data to our servers, offering enhanced privacy.

How to Decode Base64 Javascript Online

Follow these simple steps to Decode Base64 Javascript Online:

1. Enter your data:Paste your text or binary data into the input field.
2. Click "Encode":Hit the "Encode" button to convert your data to Base64 format.
3. Copy the result:Your encoded data will appear instantly. Copy it for use in your applications.

Example of Base64 Encoding

Here’s a quick example. Encoding the string "Hello, World!" in Base64 yields:

SGVsbG8sIFdvcmxkIQ==

In this example, the characters "H", "e", "l", "l", "o", ",", " ", "W", "o", "r", "l", "d", "!" are encoded into Base64 format, providing a safe and efficient way to transmit text data.