https://github.com/harrystevens/ba64

A tiny npm module for saving Base64 encoded images that are part of data URLs to your file system.
https://github.com/harrystevens/ba64

Last synced: 18 days ago
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A tiny npm module for saving Base64 encoded images that are part of data URLs to your file system.

• Host: GitHub
• URL: https://github.com/harrystevens/ba64
• Owner: HarryStevens
• License: mit
• Created: 2017-10-14T04:43:35.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2023-03-01T09:14:01.000Z (about 2 years ago)
• Last Synced: 2025-04-18T05:45:05.126Z (about 1 month ago)
• Language: JavaScript
• Homepage: https://www.npmjs.com/package/ba64
• Size: 58.6 KB
• Stars: 10
• Watchers: 2
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# ba64

[![Build Status](https://travis-ci.org/HarryStevens/ba64.svg?branch=master)](https://travis-ci.org/HarryStevens/ba64) [![Coverage Status](https://coveralls.io/repos/github/HarryStevens/ba64/badge.svg?branch=master)](https://coveralls.io/github/HarryStevens/ba64?branch=master)

A tiny npm module for saving Base64 encoded images that are part of [data URLs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs) to your file system. This is useful for saving images that have been uploaded to the browser via [`FileReader.readAsDataUrl()`](https://developer.mozilla.org/en-US/docs/Web/API/FileReader/readAsDataURL).

* [Installation](#installation)

* [Example](#example)

* [API](#api)

## Installation

```bash

npm i ba64 -S

```

## Example

```js

var ba64 = require("ba64"),

  data_url = "data:image/jpeg;base64,[Base64 encoded image goes here]";

// Save the image synchronously.

ba64.writeImageSync("myimage", data_url); // Saves myimage.jpeg.

// Or save the image asynchronously.

ba64.writeImage("myimage", data_url, function(err){

  if (err) throw err;

  console.log("Image saved successfully");

  // do stuff

});

```

## API

# ba64.**writeImage**(*path/to/file_name*, *data_url*, *callback*)

Asynchronously saves the Base64 encoded image to the file system. `file_name` should not include the file extension; ba64 will do that for you.

# ba64.**writeImageSync**(*path/to/file_name*, *data_url*)

Synchronously saves the Base64 encoded image to the file system. `file_name` should not include the file extension; ba64 will do that for you.

### Helper functions

# ba64.**getExt**(*data_url*)

Returns the file extension of the Base64 encoded image.

# ba64.**getBa64Img**(*data_url*)

Returns the Base64 encoded image without the `data:` scheme prefix.