Removing WordPress Header Junk

Place the following code in your functions.php file of your WordPress theme to remove some useless things from the head of your site.

There are a lot of things that WordPress adds to the head of your site. These can all be removed using the remove_action function that WordPress provides in your functions.php file.

// functions.php

    // =========================================================================
    // REMOVE JUNK FROM HEAD
    // =========================================================================
    remove_action('wp_head', 'rsd_link'); // remove really simple discovery link
    remove_action('wp_head', 'wp_generator'); // remove wordpress version

    remove_action('wp_head', 'feed_links', 2); // remove rss feed links (make sure you add them in yourself if youre using feedblitz or an rss service)
    remove_action('wp_head', 'feed_links_extra', 3); // removes all extra rss feed links

    remove_action('wp_head', 'index_rel_link'); // remove link to index page
    remove_action('wp_head', 'wlwmanifest_link'); // remove wlwmanifest.xml (needed to support windows live writer)

    remove_action('wp_head', 'start_post_rel_link', 10, 0); // remove random post link
    remove_action('wp_head', 'parent_post_rel_link', 10, 0); // remove parent post link
    remove_action('wp_head', 'adjacent_posts_rel_link', 10, 0); // remove the next and previous post links
    remove_action('wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0 );

    remove_action('wp_head', 'wp_shortlink_wp_head', 10, 0 );

For more information on the remove_action and cleaning up your WordPress head, check out the official docs.

https://scotch.io/tutorials/removing-wordpress-header-junk