Get the width and height of an image in node.js

Installing GraphicsMagick or ImageMagick isn’t at all needed, determining the dimensions of a image is as easy as looking at the header. image-size is a pure javascript implementation of said feature which is very easy to use.

https://github.com/netroy/image-size

var sizeOf = require('image-size');
sizeOf('images/funny-cats.png', function (err, dimensions) {
  console.log(dimensions.width, dimensions.height);
});