Remove unecessary WordPress clutter from header.

wp-remove-clutter-from-head.php

<?php
/**
 * Remove Unnecessary WordPress Header Clutter
 *
 * This code snippet removes unnecessary elements from the WordPress header to improve page load and security.
 * Place this code in your theme's functions.php file.
 *
 * Gist Keywords: wordpress, security, performance
 *
 * @category   Performance
 * @author     Knol Aust
 * @version    1.0.0
 * @description This code removes various WordPress header elements that are not required for most websites.
 */

/**
 * Remove Unnecessary Header Elements
 */
function remove_header_clutter() {
    // Remove Really Simple Discovery (RSD) link
    remove_action('wp_head', 'rsd_link');

    // Remove WordPress Generator meta tag
    remove_action('wp_head', 'wp_generator');

    // Remove Feed Links
    remove_action('wp_head', 'feed_links', 2);

    // Remove Index Rel Link
    remove_action('wp_head', 'index_rel_link');

    // Remove Windows Live Writer manifest link
    remove_action('wp_head', 'wlwmanifest_link');

    // Remove Feed Links Extra
    remove_action('wp_head', 'feed_links_extra', 3);

    // Remove Start Post Rel Link
    remove_action('wp_head', 'start_post_rel_link', 10, 0);

    // Remove Parent Post Rel Link
    remove_action('wp_head', 'parent_post_rel_link', 10, 0);

    // Remove Adjacent Posts Rel Link
    remove_action('wp_head', 'adjacent_posts_rel_link', 10, 0);
}

// Hook the function to execute
add_action('init', 'remove_header_clutter');