# base64-js

**Repository Path**: mirrors_feross/base64-js

## Basic Information

- **Project Name**: base64-js
- **Description**: New repo for ongoing work in https://github.com/beatgammit/base64-js (Base64 encoding/decoding in pure JS)
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2024-07-25
- **Last Updated**: 2026-05-23

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# base64-js

### Ongoing work has temporarily moved from [beatgammit/base64-js](https://github.com/beatgammit/base64-js) to [feross/base64-js](https://github.com/feross/base64-js).

`base64-js` does basic base64 encoding/decoding in pure JS.

[![CI](https://github.com/feross/base64-js/actions/workflows/main.yml/badge.svg)](https://github.com/feross/base64-js/actions/workflows/main.yml)

Many browsers already have base64 encoding/decoding functionality, but it is for text data, not all-purpose binary data.

Sometimes encoding/decoding binary data in the browser is useful, and that is what this module does.

## install

With [npm](https://npmjs.org) do:

`npm install base64-js` and `var base64js = require('base64-js')`

For use in web browsers do:

`<script src="base64js.min.js"></script>`

[Get supported base64-js with the Tidelift Subscription](https://tidelift.com/subscription/pkg/npm-base64-js?utm_source=npm-base64-js&utm_medium=referral&utm_campaign=readme)

## methods

`base64js` has three exposed functions, `byteLength`, `toByteArray` and `fromByteArray`, which both take a single argument.

- `byteLength` - Takes a base64 string and returns length of byte array
- `toByteArray` - Takes a base64 string and returns a byte array
- `fromByteArray` - Takes a byte array and returns a base64 string

## license

MIT