Crop image to rectangle
$ npm install rectimagevar rectimage = require('rectimage')
var newImage = rectimage(image)
newImage.onload = function() { /* */ }or return a canvas
var rectimage = require('rectimage')
var canvas = rectimage(image, { canvas: true })
document.body.appendChild(canvas)var rectimage = require('rectimage')
var newImage = rectimage(image, { newLength: 200 })MIT © C. T. Lin