jQuery qrLinkify Plugin: Add QR codes next to anchor links

jquery.qrlinkify.js

/* jQuery qrLinkify Plugin: Add QR codes next to anchor links
 * Author: @elijahmanor
 * Example Usage: 
 * $( "a" ).qrLinkify();
 * $( "a" ).qrLinkify({ width: 250, height: 250 });
 */
$.fn.qrLinkify = function( options ) {
    options = $.extend( {}, $.fn.qrLinkify.defaults, options );
    
    return this.each( function( index ) {
        var $this = $( this ),
            url = $this.attr( "href" );

        $( "<img />", {
            src: "https://chart.googleapis.com/chart?cht=qr&chl=" + escape( url ) + "&choe=UTF-8&chs=" + options.width + "x" + options.height
        }).insertAfter( $this );
    });
};

$.fn.qrLinkify.defaults = { width: 100, height: 100 };