options = get_option('aio_options', []);
// 1. WebP Auto Conversion (Background Processing)
if ( !empty($this->options['opt-perf-webp']) ) {
add_filter('wp_generate_attachment_metadata', [$this, 'schedule_webp_conversion'], 10, 2);
add_action('aio_convert_webp_cron', [$this, 'process_webp_conversion']);
}
// 2. Force Native Lazy Load
if ( !empty($this->options['opt-perf-lazyload']) ) {
add_filter( 'wp_lazy_loading_enabled', '__return_true' );
add_filter( 'the_content', [$this, 'force_lazy_load_content'], 99 );
}
// 3. Minify HTML/CSS/JS
if ( !empty($this->options['optEnableMinify']) ) {
add_action('template_redirect', [$this, 'start_minify_buffer'], 1);
}
$is_third_party_seo = defined('WPSEO_VERSION') || defined('RANK_MATH_VERSION') || class_exists('All_in_One_SEO_Pack');
if ( !$is_third_party_seo ) {
// 7. Auto Meta Tags
if ( !empty($this->options['optEnableMetaTags']) ) {
add_action('wp_head', [$this, 'generate_meta_tags'], 1);
}
// 8. Social Open Graph
if ( !empty($this->options['optEnableOpenGraph']) ) {
add_filter('language_attributes', [$this, 'add_og_xml_ns']);
add_action('wp_head', [$this, 'generate_open_graph'], 2);
}
// 9. XML Sitemap Generator
if ( !empty($this->options['optEnableSitemap']) ) {
add_action('init', [$this, 'register_sitemap_rewrite']);
add_action('template_redirect', [$this, 'render_sitemap'], 1);
}
}
// 5. Auto Alt Tags
if ( !empty($this->options['optEnableAutoAltTags']) ) {
add_filter('wp_get_attachment_image_attributes', [$this, 'auto_fill_alt_tags'], 10, 3);
}
// 6. Media Replace
if ( !empty($this->options['optEnableMediaReplace']) ) {
add_filter('attachment_fields_to_edit', [$this, 'add_media_replace_field'], 10, 2);
add_action('edit_attachment', [$this, 'process_media_replace']);
}
}
/**
* Schedule the conversion to run asynchronously via WP Cron.
*/
public function schedule_webp_conversion($meta, $attachment_id) {
// Schedule event 5 seconds from now to avoid blocking the current upload request
if (!wp_next_scheduled('aio_convert_webp_cron', [$attachment_id])) {
wp_schedule_single_event(time() + 5, 'aio_convert_webp_cron', [$attachment_id]);
}
return $meta;
}
/**
* Process the WebP conversion in the background.
*/
public function process_webp_conversion($attachment_id) {
$delete_original = !empty($this->options['opt-perf-webp-delete-original']);
aio_generate_webp_for_attachment($attachment_id, $delete_original);
}
/**
* Fallback to add loading="lazy" to all img/iframe tags in content if missing.
*/
public function force_lazy_load_content($content) {
if (empty($content) || !is_string($content)) return $content;
// Add loading="lazy" to ![]()
tags that don't have it
$content = preg_replace_callback(
'/<(img|iframe)[^>]+>/i',
function($matches) {
$tag = $matches[0];
if (stripos($tag, 'loading=') === false) {
$tag = str_replace('<' . $matches[1], '<' . $matches[1] . ' loading="lazy"', $tag);
}
return $tag;
},
$content
);
return $content;
}
/**
* Start Output Buffer for Minification
*/
public function start_minify_buffer() {
if (!is_admin() && !is_user_logged_in()) {
ob_start([$this, 'minify_html_output']);
}
}
/**
* Regex Minify Logic for HTML/CSS/JS
*/
public function minify_html_output($buffer) {
if (empty($buffer)) return $buffer;
$search = array(
'/\>[^\S ]+/s', // strip whitespaces after tags, except space
'/[^\S ]+\/' // Remove HTML comments
);
$replace = array(
'>',
'<',
'\\1',
''
);
$buffer = preg_replace($search, $replace, $buffer);
return $buffer;
}
/**
* Auto Fill Alt Tags
*/
public function auto_fill_alt_tags($attr, $attachment, $size) {
if (empty($attr['alt'])) {
$attr['alt'] = trim(wp_strip_all_tags(get_the_title($attachment->ID)));
if (empty($attr['alt'])) {
// Fallback to parent post title
$parent_id = wp_get_post_parent_id($attachment->ID);
if ($parent_id) {
$attr['alt'] = trim(wp_strip_all_tags(get_the_title($parent_id)));
}
}
}
return $attr;
}
/**
* Add Media Replace Field
*/
public function add_media_replace_field($form_fields, $post) {
// Only show in the traditional Edit Media screen
if (function_exists('get_current_screen')) {
$screen = get_current_screen();
if ($screen && $screen->id === 'attachment') {
$html = '';
$html .= '' . esc_html__('Upload a new file to replace the current one. Note: The old file will be deleted permanently.', 'aio-tools') . '
';
$html .= wp_nonce_field('aio_media_replace_action', 'aio_media_replace_nonce', true, false);
$form_fields['aio_media_replace'] = array(
'label' => __('Replace File', 'aio-tools'),
'input' => 'html',
'html' => $html
);
}
}
return $form_fields;
}
/**
* Process Media Replace Upload
*/
public function process_media_replace($attachment_id) {
if (!empty($_FILES['aio_media_replace']['name'])) {
if (!isset($_POST['aio_media_replace_nonce']) || !wp_verify_nonce(sanitize_text_field(wp_unslash($_POST['aio_media_replace_nonce'])), 'aio_media_replace_action')) {
return;
}
require_once(ABSPATH . 'wp-admin/includes/file.php');
require_once(ABSPATH . 'wp-admin/includes/image.php');
$uploaded_file = $_FILES['aio_media_replace']; // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
$upload_overrides = array('test_form' => false);
$old_file = get_attached_file($attachment_id);
$movefile = wp_handle_upload($uploaded_file, $upload_overrides);
if ($movefile && !isset($movefile['error'])) {
// Delete old file
if ($old_file && file_exists($old_file)) {
wp_delete_file($old_file);
}
$new_file = $movefile['file'];
global $wpdb;
$wpdb->update($wpdb->posts,
['post_mime_type' => $movefile['type'], 'guid' => $movefile['url']],
['ID' => $attachment_id]
);
update_attached_file($attachment_id, $new_file);
$attach_data = wp_generate_attachment_metadata($attachment_id, $new_file);
wp_update_attachment_metadata($attachment_id, $attach_data);
}
}
}
/**
* Generate Meta Description
*/
public function generate_meta_tags() {
if (is_singular()) {
global $post;
$desc = wp_trim_words(wp_strip_all_tags(strip_shortcodes($post->post_content)), 30, '...');
if (!empty($desc)) {
echo '' . "\n";
}
} elseif (is_front_page() || is_home()) {
$desc = get_bloginfo('description');
if (!empty($desc)) {
echo '' . "\n";
}
}
}
/**
* Add Open Graph XML NS
*/
public function add_og_xml_ns($output) {
return $output . ' prefix="og: http://ogp.me/ns#"';
}
/**
* Generate Open Graph Tags
*/
public function generate_open_graph() {
if (is_singular()) {
global $post;
$title = get_the_title();
$url = get_permalink();
$desc = wp_trim_words(wp_strip_all_tags(strip_shortcodes($post->post_content)), 30, '...');
$type = 'article';
$image = get_the_post_thumbnail_url($post->ID, 'large');
} else {
$title = get_bloginfo('name');
$url = home_url('/');
$desc = get_bloginfo('description');
$type = 'website';
if (has_custom_logo()) {
$image = wp_get_attachment_image_url(get_theme_mod('custom_logo'), 'full');
} else {
$image = '';
}
}
echo '' . "\n";
echo '' . "\n";
echo '' . "\n";
if (!empty($desc)) {
echo '' . "\n";
}
if (!empty($image)) {
echo '' . "\n";
}
echo '' . "\n";
}
/**
* Register Sitemap Rewrite Rule
*/
public function register_sitemap_rewrite() {
add_rewrite_rule('^sitemap\.xml$', 'index.php?aio_sitemap=1', 'top');
}
/**
* Render XML Sitemap
*/
public function render_sitemap() {
$uri = isset($_SERVER['REQUEST_URI']) ? sanitize_text_field(wp_unslash($_SERVER['REQUEST_URI'])) : '';
if (strpos($uri, 'sitemap.xml') !== false) {
header('Content-Type: text/xml; charset=utf-8');
echo '' . "\n";
echo '' . "\n";
// Home page
echo '' . esc_url(home_url('/')) . 'daily1.0' . "\n";
// Posts & Pages
$query = new WP_Query([
'post_type' => ['post', 'page'],
'post_status' => 'publish',
'posts_per_page' => 1000,
'orderby' => 'modified',
'order' => 'DESC'
]);
if ($query->have_posts()) {
while ($query->have_posts()) {
$query->the_post();
$modified = get_the_modified_time('c');
echo '' . esc_url(get_permalink()) . '' . esc_html($modified) . '0.8' . "\n";
}
wp_reset_postdata();
}
echo '';
exit;
}
}
}
// Init Module
new AIO_Optimizer();
if (!function_exists('aio_generate_webp_for_attachment')) {
function aio_generate_webp_for_attachment($attachment_id, $delete_original = false) {
$file_path = get_attached_file($attachment_id);
if (!$file_path || !file_exists($file_path)) return false;
$mime_type = mime_content_type($file_path);
if (!in_array($mime_type, ['image/jpeg', 'image/png'])) {
return false; // Only convert JPEG and PNG
}
$path_info = pathinfo($file_path);
$webp_path = $path_info['dirname'] . '/' . $path_info['filename'] . '.webp';
$success = false;
// Try raw GD first for maximum control over alpha and truecolor (fixes blank/white image bug)
if (function_exists('imagewebp')) {
$image = null;
if ($mime_type === 'image/jpeg' && function_exists('imagecreatefromjpeg')) {
$image = @imagecreatefromjpeg($file_path);
} elseif ($mime_type === 'image/png' && function_exists('imagecreatefrompng')) {
$image = @imagecreatefrompng($file_path);
}
if ($image) {
if (function_exists('imagepalettetotruecolor')) {
@imagepalettetotruecolor($image);
}
if ($mime_type === 'image/png') {
@imagealphablending($image, false);
@imagesavealpha($image, true);
}
$success = @imagewebp($image, $webp_path, 85);
@imagedestroy($image);
}
}
// Fallback to WP Image Editor if GD failed or is missing
if (!$success || !file_exists($webp_path) || filesize($webp_path) < 100) {
$editor = wp_get_image_editor($file_path);
if (!is_wp_error($editor)) {
$editor->set_quality(85);
$saved = $editor->save($webp_path, 'image/webp');
$success = !is_wp_error($saved);
}
}
if ($success && file_exists($webp_path) && filesize($webp_path) > 100) {
// Update attachment file and mime type in DB
update_attached_file($attachment_id, $webp_path);
global $wpdb;
$wpdb->update(
$wpdb->posts,
['post_mime_type' => 'image/webp'],
['ID' => $attachment_id],
['%s'],
['%d']
);
// Delete original file if option is enabled
if ( $delete_original ) {
wp_delete_file($file_path);
}
return true;
}
return false;
}
}