Please consider not printing scripts

A very dirty but effective fix is for WP v.4.5.0+

--- /home/classte/backup/easy-fancybox-class.php        2016-07-06 19:49:15.301943718 +0200
+++ easy-fancybox-class.php     2016-07-08 14:15:55.503965124 +0200
@@ -1,4 +1,23 @@
 <?php
+
+/**
+ * Introduce this script to WordPress as a localized script.
+ *
+ * This will be placed BEFORE the $footer_handle script in the footer.
+ * FIXME Will it be printed in the footer with a header script's handle?
+ *
+ * @FIXRES
+ */
+function fixres_easy_fancybox( $buffer ) {
+    global $wp_scripts;
+    $name = 'easy-fancybox-inline-script';
+    $footer_handle = 'jquery-fancybox';
+    $buffer = trim( preg_replace( '#<script[^>]*>(.*)</script>#is', '$1', $buffer ) );
+    $fix_res_banner = "/* RELOCATED {$name} */\n";
+    wp_add_inline_script( $footer_handle, $fix_res_banner . $buffer );
+    return "<!-- FIXRES {$name} optimized -->\n";
+}
+
 /**
  * Easy FancyBox Class
  */
@@ -17,8 +36,7 @@

        public static function main_script() {

-               echo '
-<!-- Easy FancyBox ' . EASY_FANCYBOX_VERSION . ' using FancyBox ' . FANCYBOX_VERSION . ' - RavanH (http://status301.net/wordpress-plugins/easy-fancybox/) -->';
+//        echo '<!-- Easy FancyBox ' . EASY_FANCYBOX_VERSION . ' using FancyBox ' . FANCYBOX_VERSION . ' - RavanH (http://status301.net/wordpress-plugins/easy-fancybox/) -->';

                // check for any enabled sections
                //if(!empty(self::$options['Global']['options']['Enable']['options']))
@@ -31,13 +49,12 @@
                }
                // and abort when none are active
                if (!self::$add_scripts) {
-                       echo '
-<!-- Nothing enabled under Settings > Media > FancyBox. -->
-
-       ';
+//            echo '<!-- Nothing enabled under Settings > Media > FancyBox. -->    ';
                        return;
                }

+       // @FIXRES
+       ob_start( 'fixres_easy_fancybox' );
                // begin output FancyBox settings
                echo '
 <script type="text/javascript">
@@ -234,6 +251,8 @@
 /* ]]> */
 </script>
 ';
+    ob_end_flush();
+    // @FIXRES - END

        // customized styles
        $styles = '';

https://wordpress.org/plugins/easy-fancybox/