Usage

Use this free Base64 encoder and decoder to easily convert between plain text and Base64-encoded strings. This tool is perfect for decoding API responses. No sign-up required — just paste your data and convert instantly.

How to use the Base64 decoding tool:

You can use this tool to decode Base64-encoded strings, or to convert Base64 text strings back to their original binary string. Just paste your data and copy the result.

Use cases:

Data conversion: Convert text strings back to their original binary form, useful for processing encoded text data.
Debugging: Decode Base64 data when troubleshooting or analyzing web resources.

Using Base64 in JavaScript:

In JavaScript, Base64 encoding and decoding can be done using the native btoa and atob functions, as shown below:

const text = "Hello, world!";
const encoded = btoa(text);
console.log(encoded); // Résultat: "SGVsbG8sIHdvcmxkIQ=="

const encoded = "SGVsbG8sIHdvcmxkIQ==";
const decoded = atob(encoded);
console.log(decoded); // Résultat: "Hello, world!"

Using Base64 in TypeScript (Node.js):

In TypeScript with Node.js, Base64 encoding and decoding can be done using the native Buffer class, as shown below:

const text: string = "Hello, world!";
const encoded: string = Buffer.from(text).toString("base64");
console.log(encoded); // Résultat: "SGVsbG8sIHdvcmxkIQ=="

const encoded: string = "SGVsbG8sIHdvcmxkIQ==";
const decoded: string = Buffer.from(encoded, "base64").toString(
  "utf-8"
);
console.log(decoded); // Résultat: "Hello, world!"

Using Base64 in Rust:

In Rust, Base64 encoding and decoding can be done using the base64 crate, as shown below:

use base64::{Engine as _, engine::general_purpose};
 
let text = "Hello, world!";
let encoded = general_purpose::STANDARD.encode(text);
println!("{}", encoded); // Résultat: "SGVsbG8sIHdvcmxkIQ=="

use base64::{Engine as _, engine::general_purpose};
 
let encoded = "SGVsbG8sIHdvcmxkIQ==";
let decoded = general_purpose::STANDARD.decode(encoded).unwrap();
let text = String::from_utf8(decoded).unwrap();
println!("{}", text); // Résultat: "Hello, world!"

Add to Cargo.toml:

[dependencies]
base64 = "0.21"

These functions make it easy to handle encoding and decoding directly in your code, enabling smooth data processing and transmission in web applications and on the backend.

Base64 encoder / decoder