gerbyzation / get-image-colors

Extract colors from GIF, PNG, JPG, and SVG images

get-image-colors

Extract colors from images. Supports GIF, JPG, PNG, and even SVG!

Installation

npm install get-image-colors --save

This package is intended for use in node environments. It won't work in a browser because it has node-specific dependencies.

Usage

const getColors = require("get-image-colors")

getColors(__dirname + 'double-rainbow.png', function(err, colors){
  // colors is an array of colors
})

colors is an array of chroma.js color objects. chroma.js objects have methods that lets you pick the color format you want (RGB hex, HSL, etc), and give you access to powerful color manipulation features:

colors.map(color => color.hex())
// => ['#FFFFFF', '#123123', '#F0F0F0']

colors[0].alpha(0.5).css();
// => 'rgb(0,128,128)''

How it Works

get-image-colors uses get-pixels to create a pixel array, then extracts a color palette with get-rgba-palette, which uses quantize under the hood.

Colors are converted from get-rgba-palette's flat array format into chroma.js color instances.

Tests

npm install
npm test

Dependencies

• chroma-js: JavaScript library for color conversions
• get-pixels: Reads the pixels of an image as an ndarray
• get-rgba-palette: gets a palette of prominent colors from an array of pixels
• get-svg-colors: Extract stroke and fill colors from SVG files

Dev Dependencies

• mocha: simple, flexible, fun test framework

License

MIT