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create a clean wordpress header and remove unnecessary clutter.
<?php
/*
Plugin Name: wordpress assist clean header
Plugin URI: http://www.wordpressassist.nl/
Description: Remove shortlink hook
Version: 1.0
Author: AukeJomm
Author URI: http://www.aukejongbloed.nl
*/
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', 'print_emoji_detection_script', 7 );
remove_action( 'wp_print_styles', 'print_emoji_styles' );
remove_action('wp_head', 'wp_shortlink_wp_head', 10, 0); // Remove shortlink
/*
* Remove JSON API links in header html
*/
function remove_json_api () {
// Remove the REST API lines from the HTML Header
remove_action( 'wp_head', 'rest_output_link_wp_head', 10 );
remove_action( 'wp_head', 'wp_oembed_add_discovery_links', 10 );
// Remove the REST API endpoint.
remove_action( 'rest_api_init', 'wp_oembed_register_route' );
// Turn off oEmbed auto discovery.
add_filter( 'embed_oembed_discover', '__return_false' );
// Don't filter oEmbed results.
remove_filter( 'oembed_dataparse', 'wp_filter_oembed_result', 10 );
// Remove oEmbed discovery links.
remove_action( 'wp_head', 'wp_oembed_add_discovery_links' );
// Remove oEmbed-specific JavaScript from the front-end and back-end.
remove_action( 'wp_head', 'wp_oembed_add_host_js' );
// Remove all embeds rewrite rules.
add_filter( 'rewrite_rules_array', 'disable_embeds_rewrites' );
}
add_action( 'after_setup_theme', 'remove_json_api' );
/*
Snippet completely disable the REST API and shows {"code":"rest_disabled","message":"The REST API is disabled on this site."}
when visiting http://yoursite.com/wp-json/
*/
function disable_json_api () {
// Filters for WP-API version 1.x
add_filter('json_enabled', '__return_false');
add_filter('json_jsonp_enabled', '__return_false');
// Filters for WP-API version 2.x
add_filter('rest_enabled', '__return_false');
add_filter('rest_jsonp_enabled', '__return_false');
}
add_action( 'after_setup_theme', 'disable_json_api' );
@iiic
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iiic commented Mar 23, 2022

Some parameters can be redundant like in remove_action( 'wp_head', 'rest_output_link_wp_head', 10 ); third param "priority" has 10 as default value, so you don't have to write it again.

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