Get information about a remote image by passing a [-format string](http://www.imagemagick.org/script/escape.php) to [ImageMagick's identify command](http://www.imagemagick.org/script/identify.php)

remote_imageinfo_request.js

/**
 * Given an image URL and a format string, return information from ImageMagick's identify command.
 * @param {String} url|uri|image The URL for the image to be analyzed
 * @param {String} [format='{"width": %w, "height": %h}'] String for the the information you want in the format you want. Use variables from http://www.imagemagick.org/script/escape.php
 * @param {String} [callback|cb] Name of the function you want to be ca
 * @returns {JSON} {"result": "..."} 
*/

// omit the `format` argument to use the default, JSON-ready, response
$.getJSON('//imageinfo.jit.su/?cb=?', {
  url: 'http://nodejs.org/logo.png',
}, function (r) {
  var imageinfo = JSON.parse(r.result);
  console.log(imageinfo); // { width: 245, height: 66 }
})