https://github.com/kevva/to-ico

Convert PNG to ICO in memory
https://github.com/kevva/to-ico

buffer converter ico nodejs png

Last synced: 5 days ago
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Convert PNG to ICO in memory

• Host: GitHub
• URL: https://github.com/kevva/to-ico
• Owner: kevva
• License: mit
• Created: 2016-04-18T07:30:12.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2020-05-03T07:12:55.000Z (over 4 years ago)
• Last Synced: 2024-12-17T04:03:04.986Z (17 days ago)
• Topics: buffer, converter, ico, nodejs, png
• Language: JavaScript
• Size: 48.8 KB
• Stars: 136
• Watchers: 7
• Forks: 19
• Open Issues: 4
• Metadata Files:
  • Readme: readme.md
  • License: license

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README

        
# to-ico [![Build Status](https://travis-ci.org/kevva/to-ico.svg?branch=master)](https://travis-ci.org/kevva/to-ico)

> Convert PNG to ICO in memory

## Install

```

$ npm install --save to-ico

```

## Usage

```js

const fs = require('fs');

const toIco = require('to-ico');

const files = [

	fs.readFileSync('unicorn-16x16.png'),

	fs.readFileSync('unicorn-32x32.png')

];

toIco(files).then(buf => {

	fs.writeFileSync('favicon.ico', buf);

});

```

## API

### toIco(input, [options])

#### input

Type: `Array` `string`

Array of PNG image buffers.

The images must have a size of `16x16`, `24x24`, `32x32`, `48x48`, `64x64`, `128x128` or `256x256` and they must have an 8 bit per sample (channel) bit-depth (on Unix you can check this with the `file` command: RGB(A) is supported, while [colormap](https://en.wikipedia.org/wiki/Indexed_color) is not, because it's 8 bits per pixel instead of 8 bits per channel, which is 24 or 32 bits per pixel depending on the presence of the alpha channel). These are limitations in the underlying [`pngjs`](https://github.com/lukeapage/pngjs#pngjs) library. If you have a colormap PNG you can convert it to an RGB/RGBA PNG with commonly used image editing tools.

#### options

##### resize

Type: `boolean`


Default: `false`

Use the largest image and resize to sizes defined using the [sizes](#sizes) option.

##### sizes

Type: `Array`


Default: `[16, 24, 32, 48, 64, 128, 256]`

Array of sizes to use when resizing.

## Related

* [to-ico-cli](https://github.com/kevva/to-ico-cli) - CLI for this module

## License

MIT © [Kevin Martensson](http://github.com/kevva)