hello,
this pdf file created with Adobe InDesign, alot of elements are missing, also wrong color are displaying:
http://tal-ram.co.il/images/products/orders/14265798291.pdf

![viewer](https://cloud.githubusercontent.com/assets/1198143/6713275/f88ae242-cd99-11e4-8202-fdb5dc4b132e.png)

![org](https://cloud.githubusercontent.com/assets/1198143/6713312/24d83ff2-cd9a-11e4-82e7-647ad5440a64.png)

if (!url) {
    return false;
  }
  switch (url.protocol) {
    case "http:":
    case "https:":
    case "ftp:":
    case "mailto:":
    case "tel:":
      return true;
    default:
      return false;
  }
}
/**
 * Attempts to create a valid absolute URL.
 *
 * @param {URL|string} url - An absolute, or relative, URL.
 * @param {URL|string} [baseUrl] - An absolute URL.
 * @param {Object} [options]
 * @returns Either a valid {URL}, or `null` otherwise.
 */
function createValidAbsoluteUrl(url, baseUrl = null, options = null) {