WP Head Footer allows administrators to add code to the head and/or footer of an individual post (or any post type) and/or site-wide. No need to edit your theme files! WP Head Footer allows you to add extra scripts to the header and footer, without touching your theme files Features of WP Head Footer Quick to set up Simple interface Insert header code and/or footer code of an individual post (or any post type) and/or site-wide. Set the output priority of the head and footer code Add Google Analytics code to any theme Insert Facebook pixel code Add custom CSS across themes Insert any code or script, including HTML and Javascript Notes about the Plugin In order to use this plugin, you must have the manage_options and unfiltered_html capabilities . Setting the DISALLOW_UNFILTERED_HTML constant to true in the wp-config.php would effectively disable this plugin’s admin because no user would have the capability. There is no input validation or any filtering. This plugin puts exactly what you type in the meta box directly into the html. Be careful.