Base64 Encode/Decode

Encoding

Encode and decode Base64 strings, with URL-safe and buffer support.

Import

import { base64 } from 'toolmetry';

API Reference

Function	Parameters	Returns	Description
`base64.encode`	`input: string, encoding?: string`	`string`	Encode a string to Base64
`base64.decode`	`input: string, encoding?: string`	`string`	Decode a Base64 string
`base64.encodeURL`	`input: string`	`string`	Encode to URL-safe Base64
`base64.decodeURL`	`input: string`	`string`	Decode URL-safe Base64
`base64.isValid`	`input: string`	`boolean`	Check if a string is valid Base64
`base64.encodeBuffer`	`buffer: ArrayBuffer \| Uint8Array`	`string`	Encode buffer to Base64
`base64.decodeToBuffer`	`input: string`	`Uint8Array`	Decode Base64 to Uint8Array

Examples

Basic Encode/Decode

import { base64 } from 'toolmetry';

const encoded = base64.encode('Hello, World!');
// "SGVsbG8sIFdvcmxkIQ=="

const decoded = base64.decode(encoded);
// "Hello, World!"

URL-Safe Base64

import { base64 } from 'toolmetry';

const urlSafe = base64.encodeURL('Hello+World/Test=');
// "SGVsbG8rV29ybGQvVGVzdA"

const original = base64.decodeURL(urlSafe);
// "Hello+World/Test="

Validation

import { base64 } from 'toolmetry';

base64.isValid('SGVsbG8='); // true
base64.isValid('not-base64!'); // false

Buffer Operations

import { base64 } from 'toolmetry';

const buffer = new Uint8Array([72, 101, 108, 108, 111]);
const encoded = base64.encodeBuffer(buffer);
// "SGVsbG8="

const decoded = base64.decodeToBuffer(encoded);
// Uint8Array [72, 101, 108, 108, 111]

Try It Live

Input

URL Encoder/Decoder