npm-icon-gen

Generate an icon files from the SVG or PNG files.

Support formats

Supported the output format of the icon are following.

Platform	Icon
Windows	app.ico or specified name.
macOS	app.icns or specified name.
Favicon	favicon.ico and favicon-XX.png.

Installation

$ npm install icon-gen

Usage

SVG and PNG are automatically selected from the input path. If the path indicates a file SVG, if it is a directory it will be a PNG folder.

SVG

SVG files are rendering to PNG file in sharp. Rendering files is output to a temporary directory of the each OS.

const icongen = require('icon-gen')

icongen('./sample.svg', './icons', { report: true })
  .then((results) => {
    console.log(results)
  })
  .catch((err) => {
    console.error(err)
  })

Stopped using svg2png because of its dependency on phantomjs, which is deprecated.

The quality of PNG generated from SVG will change, so if you need the previous results, use icon-gen v2.1.0 (old version).

$ npm install icon-gen@2.1.0

In the future, I may add SVG to PNG conversion by Chromium via puppeteer-core in addition to sharp.

PNG

Generate an icon files from the directory of PNG files.

const icongen = require('icon-gen')

icongen('./images', './icons', { report: true })
  .then((results) => {
    console.log(results)
  })
  .catch((err) => {
    console.error(err)
  })

Required PNG files is below. Favicon outputs both the ICO and PNG files (see: audreyr/favicon-cheat-sheet).

Name	Size	ICO	ICNS	Fav ICO	Fav PNG
16.png	16x16	✔	✔	✔
24.png	24x24	✔		✔
32.png	32x32	✔	✔	✔	✔
48.png	48x48	✔		✔
57.png	57x57				✔
64.png	64x64	✔	✔	✔
72.png	72x72				✔
96.png	96x96				✔
120.png	120x120				✔
128.png	128x128	✔	✔		✔
144.png	144x144				✔
152.png	152x152				✔
195.png	195x195				✔
228.png	228x228				✔
256.png	256x256	✔	✔
512.png	512x512		✔
1024.png	1024x1024		✔

To make it a special size configuration, please specify with ico,icns and favicon options.

Node API

icongen

icongen is promisify function.

icongen(src, dest[, options])

Name	Type	Description
src	String	Path of the SVG file or PNG files directory that becomes the source.
dest	String	Destination directory path.
options	Object	see: Options.

Options:

const options = {
  report: true,
  ico: {
    name: 'app',
    sizes: [16, 24, 32, 48, 64, 128, 256]
  },
  icns: {
    name: 'app',
    sizes: [16, 32, 64, 128, 256, 512, 1024]
  },
  favicon: {
    name: 'favicon-',
    pngSizes: [32, 57, 72, 96, 120, 128, 144, 152, 195, 228],
    icoSizes: [16, 24, 32, 48, 64]
  }
}

If all image options (ico,icns, favicon) are omitted, all images are output with their default settings.

// Output an all images with default settings
const options = {
  report: true
}

If individual image option is omitted, default setting is used. If there is a format that you do not want to output, specify others and omit that image.

// Without ICNS
const options = {
  report: true,
  ico: {}
  favicon: {}
}

Name	Type	Description
report	Boolean	Display the process reports. Default is false, disable a report.
ico	Object	Output setting of ICO file.
icns	Object	Output setting of ICNS file.
favicon	Object	Output setting of Favicon file (PNG and ICO).

ico, icns

Name	Type	Default	Description
name	String	app	Name of an output file.
sizes	Number[]	[Defaults...]	Structure of an image sizes.

favicon

Name	Type	Default	Description
name	String	favicon-	Prefix of an output PNG files. Start with the alphabet, can use - and _. This option is for PNG. The name of the ICO file is always favicon.ico.
pngSizes	Number[]	[Defaults...]	Size structure of PNG files to output.
icoSizes	Number[]	[Defaults...]	Structure of an image sizes for ICO.

CLI

Usage:  icon-gen [options]

Generate an icon from the SVG or PNG file.
If "--ico", "--icns", "--favicon" is not specified, everything is output in the standard setting.

Options:
  -i, --input <Path>           Path of the SVG file or PNG file directory.
  -o, --output <Path>          Path of the output directory.
  -r, --report                 Display the process reports, default is disable.
  --ico                        Output ICO file with default settings, option is "--ico-*".
  --ico-name <Name>            ICO file name to output.
  --ico-sizes [Sizes]          PNG size list to structure ICO file
  --icns                       Output ICNS file with default settings, option is "--icns-*".
  --icns-name <Name>           ICO file name to output.
  --icns-sizes [Sizes]         PNG size list to structure ICNS file
  --favicon                    Output Favicon files with default settings, option is "--favicon-*".
  --favicon-name <Name>        prefix of the PNG file. Start with the alphabet, can use "-" and "_"
  --favicon-png-sizes [Sizes]  Sizes of the Favicon PNG files
  --favicon-ico-sizes [Sizes]  PNG size list to structure Favicon ICO file
  -v, --version                output the version number
  -h, --help                   output usage information

Examples:
  $ icon-gen -i sample.svg -o ./dist -r
  $ icon-gen -i ./images -o ./dist -r
  $ icon-gen -i sample.svg -o ./dist --ico --icns
  $ icon-gen -i sample.svg -o ./dist --ico --ico-name sample --ico-sizes 16,32
  $ icon-gen -i sample.svg -o ./dist --icns --icns-name sample --icns-sizes 16,32
  $ icon-gen -i sample.svg -o ./dist --favicon --favicon-name=favicon-  --favicon-png-sizes 16,32,128 --favicon-ico-sizes 16,32

See also:
  https://github.com/akabekobeko/npm-icon-gen

ChangeLog

• CHANGELOG

License

• MIT