walterebert

<?php
remove_action( 'wp_head', 'rsd_link' );
remove_action( 'wp_head', 'wlwmanifest_link' );
remove_action( 'wp_head', 'start_post_rel_link' );
remove_action( 'wp_head', 'index_rel_link' );
remove_action( 'wp_head', 'adjacent_posts_rel_link' );

walterebert

<?php
function my_profiler()
{
	printf(
		'<!-- %d queries in %.3f seconds using %.2fMB memory -->',
		get_num_queries(),
		timer_stop( 0, 3 ),
		memory_get_peak_usage() / 1024 / 1024
	);
}

walterebert

<?php
/**
 * Prefetch DNS for given domains
 *
 * @param array $domains List of domain names
 *
 * More info: https://css-tricks.com/prefetching-preloading-prebrowsing/
 */
function my_dns_prefetch( $domains = array() ) {
	if ( ! $domains ) {

walterebert

<?php
function my_compat_jquery() {
	echo "<script>var $ = $ || jQuery;</script>\n";
}
add_action( 'wp_head', 'my_compat_jquery', 11 );

walterebert

<?php
function my_file_version( $file ) {
	global $wp_version;

	$version = $wp_version;

	if ( file_exists( $file ) ) {
		$version = filemtime( $file );
	}

walterebert

<?php
function my_allow_svg( $mimetypes ) {
	$mimetypes['svg'] = 'image/svg+xml';
	$mimetypes['svgz'] = 'image/svg+xml';

	return $mimetypes;
}
add_filter( 'upload_mimes', 'my_allow_svg' );

walterebert

<?php
// Source: https://github.com/ResponsiveImagesCG/wp-tevko-responsive-images
// Requires ImageMagick-PHP-Extension
function custom_theme_setup() {
    add_theme_support( 'advanced-image-compression' );
}
add_action( 'after_setup_theme', 'custom_theme_setup' );

walterebert

<?php
function my_unregister_taxonomies()
{
    unregister_taxonomy_for_object_type( 'category', 'post' );
    unregister_taxonomy_for_object_type( 'category', 'pages' );
    unregister_taxonomy_for_object_type( 'post_tag', 'pages' );
}
add_action( 'init', 'my_unregister_taxonomies' );

walterebert

<?php
add_filter( 'auto_update_plugin', '__return_false' );
add_filter( 'auto_update_theme', '__return_false' );

walterebert

<?php
function my_http_api_curl( $handle ) {
	curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, 180 );
	curl_setopt( $handle, CURLOPT_TIMEOUT, 180 );
}
add_action( 'http_api_curl', 'my_http_api_curl', 100, 1 );