diff --git a/class/class-mainwp-child-install.php b/class/class-mainwp-child-install.php
index d76974e..f54363c 100644
--- a/class/class-mainwp-child-install.php
+++ b/class/class-mainwp-child-install.php
@@ -9,6 +9,8 @@ namespace MainWP\Child;
 
 /**
  * Class MainWP_Child_Install
+ *
+ * @package MainWP\Child
  */
 class MainWP_Child_Install {
 
diff --git a/class/class-mainwp-child-misc.php b/class/class-mainwp-child-misc.php
index 5c129f1..d6d422d 100644
--- a/class/class-mainwp-child-misc.php
+++ b/class/class-mainwp-child-misc.php
@@ -1,27 +1,46 @@
 <?php
-
+/**
+ * MainWP Child Misc functions
+ *
+ * This file is for misc functions that don't really belong anywhere else.
+ */
 namespace MainWP\Child;
 
 // phpcs:disable WordPress.WP.AlternativeFunctions --  to use external code, third party credit.
 
+/**
+ * Class MainWP_Child_Misc
+ *
+ * @package MainWP\Child
+ */
 class MainWP_Child_Misc {
 
+	/**
+	 * @static
+	 * @var null Holds the Public static instance of MainWP_Child_Misc.
+	 */
 	protected static $instance = null;
 
 	/**
-	 * Method get_class_name()
-	 *
 	 * Get Class Name.
 	 *
-	 * @return object
+	 * @return string
 	 */
 	public static function get_class_name() {
 		return __CLASS__;
 	}
 
+	/**
+	 * MainWP_Child_Misc constructor.
+	 */
 	public function __construct() {
 	}
 
+	/**
+	 * Create a public static instance of MainWP_Child_Misc.
+	 *
+	 * @return MainWP_Child_Misc|null
+	 */
 	public static function get_instance() {
 		if ( null === self::$instance ) {
 			self::$instance = new self();
@@ -29,6 +48,9 @@ class MainWP_Child_Misc {
 		return self::$instance;
 	}
 
+	/**
+	 * Prepare Child Site favicon.
+	 */
 	public function get_site_icon() {
 		$information = array();
 		$url         = $this->get_favicon( true );
@@ -38,6 +60,12 @@ class MainWP_Child_Misc {
 		MainWP_Helper::write( $information );
 	}
 
+	/**
+	 * Get Child Site favicon.
+	 *
+	 * @param bool $parse_page Whether or not to parse the page. Default: false.
+	 * @return string|bool Return $favi_url on success, FALSE on failure.
+	 */
 	public function get_favicon( $parse_page = false ) {
 
 		$favi_url = '';
@@ -80,6 +108,12 @@ class MainWP_Child_Misc {
 		}
 	}
 
+	/**
+	 * Try to parse Child Site url for favicon.
+	 *
+	 * @param $site_url Child Site URL.
+	 * @return mixed|string $favi_url parsed favicon.
+	 */
 	private function try_to_parse_favicon( $site_url ) {
 		$request = wp_remote_get( $site_url, array( 'timeout' => 50 ) );
 		$favi    = '';
@@ -112,6 +146,9 @@ class MainWP_Child_Misc {
 		return $favi_url;
 	}
 
+	/**
+	 * Get security stats.
+	 */
 	public function get_security_stats() {
 		$information = array();
 
@@ -130,6 +167,9 @@ class MainWP_Child_Misc {
 	}
 
 
+	/**
+	 * Perform Child Site security fixes.
+	 */
 	public function do_security_fix() {
 		$sync = false;
 		if ( 'all' === $_POST['feature'] ) {
@@ -207,6 +247,9 @@ class MainWP_Child_Misc {
 		MainWP_Helper::write( $information );
 	}
 
+	/**
+	 * Perform Child Site security unfixes.
+	 */
 	public function do_security_un_fix() {
 		$information = array();
 
@@ -262,6 +305,11 @@ class MainWP_Child_Misc {
 		MainWP_Helper::write( $information );
 	}
 
+	/**
+	 * Method settings_tools()
+	 *
+	 * @deprecated Unused Element
+	 */
 	public function settings_tools() {
 		if ( isset( $_POST['action'] ) ) {
 			switch ( $_POST['action'] ) {
@@ -289,6 +337,9 @@ class MainWP_Child_Misc {
 		}
 	}
 
+	/**
+	 * Try to upload file to Child Site.
+	 */
 	public function uploader_action() {
 		$file_url    = base64_decode( $_POST['url'] ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode function is used for http encode compatible..
 		$path        = $_POST['path'];
@@ -336,8 +387,18 @@ class MainWP_Child_Misc {
 	}
 
 
+	/**
+	 * Child Site file uploader.
+	 *
+	 * @param string $file_url URL of file to be uploaded.
+	 * @param string $path Path to upload to.
+	 * @param string $file_name Name of file to upload.
+	 *
+	 * @return string[] Full path and file name of uploaded file.
+	 * @throws \Exception Error: Copy file.
+	 */
 	public function uploader_upload_file( $file_url, $path, $file_name ) {
-		// to fix uploader extension rename htaccess file issue.
+		// Fixes: Uploader Extension rename htaccess file issue.
 		if ( '.htaccess' != $file_name && '.htpasswd' != $file_name ) {
 			$file_name = sanitize_file_name( $file_name );
 		}
@@ -377,6 +438,9 @@ class MainWP_Child_Misc {
 		return array( 'path' => $full_file_name );
 	}
 
+	/**
+	 * Initiate Code Snippet action: run_snippet, save_snippet, delete_snippet.
+	 */
 	public function code_snippet() {
 
 		$action = $_POST['action'];
@@ -413,6 +477,16 @@ class MainWP_Child_Misc {
 		MainWP_Helper::write( $information );
 	}
 
+	/**
+	 * Save code snippet.
+	 *
+	 * @param string $slug Snippet slug.
+	 * @param string $type Type of snippet.
+	 * @param string $code Snippet code.
+	 * @param array  $snippets Snippets array.
+	 *
+	 * @return array $return Status response.
+	 */
 	private function snippet_save_snippet( $slug, $type, $code, $snippets ) {
 		$return = array();
 		if ( 'C' === $type ) { // save into wp-config file.
@@ -429,6 +503,15 @@ class MainWP_Child_Misc {
 		return $return;
 	}
 
+	/**
+	 * Delete code snippets.
+	 *
+	 * @param string $slug Snippet slug.
+	 * @param string $type Type of snippet.
+	 * @param array  $snippets Snippets array.
+	 *
+	 * @return array $return Status response.
+	 */
 	private function snippet_delete_snippet( $slug, $type, $snippets ) {
 		$return = array();
 		if ( 'C' === $type ) { // delete in wp-config file.
@@ -448,6 +531,14 @@ class MainWP_Child_Misc {
 		return $return;
 	}
 
+	/**
+	 * Update Child Site wp-config.php file.
+	 *
+	 * @param $action Action to perform: Delete, Save.
+	 * @param $slug Snippet slug.
+	 * @param string                                 $code Code snippet.
+	 * @return bool true|false.
+	 */
 	public function snippet_update_wp_config( $action, $slug, $code = '' ) {
 
 		$config_file = '';
diff --git a/class/class-mainwp-child.php b/class/class-mainwp-child.php
index ad58ba8..76af31e 100644
--- a/class/class-mainwp-child.php
+++ b/class/class-mainwp-child.php
@@ -309,7 +309,8 @@ class MainWP_Child {
 	 *
 	 * Initiate the chech login process.
 	 *
-	 * @uses MainWP_Connect::instance()->check_login() Auto-login user to the child site when the Open WP Admin feature from the MainWP Dashboard is used.
+	 * @uses MainWP_Connect::instance()->check_login() Auto-login user to the child site when
+	 *  the Open WP Admin feature from the MainWP Dashboard is used.
 	 */
 	public function init_check_login() {
 		MainWP_Connect::instance()->check_login();
@@ -351,7 +352,7 @@ class MainWP_Child {
 	/**
 	 * Method deactivation()
 	 *
-	 * Deactivate the MainWP Child plugin and delted unwanted data.
+	 * Deactivate the MainWP Child plugin and delete unwanted data.
 	 *
 	 * @param bool $deact Whether or not to deactivate pugin. Default: true.
 	 */
@@ -388,7 +389,7 @@ class MainWP_Child {
 	/**
 	 * Method activation()
 	 *
-	 * Activate the MainWP Child plugin and delted unwanted data.
+	 * Activate the MainWP Child plugin and delete unwanted data.
 	 */
 	public function activation() {
 		$mu_plugin_enabled = apply_filters( 'mainwp_child_mu_plugin_enabled', false );
diff --git a/class/class-mainwp-clone-page.php b/class/class-mainwp-clone-page.php
index 78c0098..9fe1009 100644
--- a/class/class-mainwp-clone-page.php
+++ b/class/class-mainwp-clone-page.php
@@ -1,21 +1,37 @@
 <?php
+/**
+ * MainWP Clone Page.
+ */
 
 namespace MainWP\Child;
 
+/**
+ * Class MainWP_Clone_Page
+ *
+ * @package MainWP\Child
+ */
 class MainWP_Clone_Page {
+
+	/**
+	 * @static
+	 * @var null Holds the Public static instance of MainWP_Clone_Page.
+	 */
 	protected static $instance = null;
 
 	/**
-	 * Method get_class_name()
-	 *
 	 * Get Class Name.
 	 *
-	 * @return object
+	 * @return string
 	 */
 	public static function get_class_name() {
 		return __CLASS__;
 	}
 
+	/**
+	 * Create a public static instance of MainWP_Clone_Page.
+	 *
+	 * @return MainWP_Clone_Page|null
+	 */
 	public static function get() {
 		if ( null === self::$instance ) {
 			self::$instance = new self();
@@ -23,6 +39,11 @@ class MainWP_Clone_Page {
 		return self::$instance;
 	}
 
+	/**
+	 * Method print_scripts()
+	 *
+	 * @deprecated Unused Element
+	 */
 	public static function print_scripts() {
 		wp_enqueue_script( 'jquery-ui-tooltip' );
 		wp_enqueue_script( 'jquery-ui-autocomplete' );
@@ -48,6 +69,9 @@ class MainWP_Clone_Page {
 	}
 
 
+	/**
+	 * Render Clone page.
+	 */
 	public static function render() {
 		$uploadError = false;
 		$uploadFile  = false;
@@ -100,6 +124,15 @@ class MainWP_Clone_Page {
 		self::render_java_script();
 	}
 
+	/**
+	 * Render clone form.
+	 *
+	 * @param array  $sitesToClone Sites that may be cloned.
+	 * @param mixed  $uploadFile Path to File.
+	 * @param string $uploadSize Size of upload.
+	 * @param bool   $error true|false.
+	 * @param string $uploadError Upload error message.
+	 */
 	private static function render_form( $sitesToClone, $uploadFile, $uploadSize, $error, $uploadError ) {
 
 		if ( ! empty( $uploadFile ) ) {
@@ -173,6 +206,9 @@ class MainWP_Clone_Page {
 		<?php
 	}
 
+	/**
+	 * Render normal restore page.
+	 */
 	public static function render_normal_restore() {
 		$uploadError = false;
 		$uploadFile  = false;
@@ -264,6 +300,10 @@ class MainWP_Clone_Page {
 	 * Author: Dion Hulse
 	 * Author URI: http://dd32.id.au/
 	 */
+	/**
+	 * Render Clone from server
+	 * Allows the Media Manager to add files from the webservers filesystem. Note: All files are copied to the uploads directory.
+	 */
 	private static function render_clone_from_server() {
 		$page         = $_REQUEST['page'];
 		$sitesToClone = get_option( 'mainwp_child_clone_sites' );
@@ -343,6 +383,12 @@ class MainWP_Clone_Page {
 		self::render_clone_from_server_form( $current_dir, $url );
 	}
 
+	/**
+	 * Render clone from server form.
+	 *
+	 * @param string $current_dir Current parent directory
+	 * @param string $url URL of file to upload.
+	 */
 	private static function render_clone_from_server_form( $current_dir, $url ) {
 
 		$dir_files      = scandir( $current_dir );
@@ -425,6 +471,9 @@ class MainWP_Clone_Page {
 		<?php
 	}
 
+	/**
+	 * Render javascript.
+	 */
 	public static function render_java_script() {
 		$uploadSizeInBytes = min( MainWP_Helper::return_bytes( ini_get( 'upload_max_filesize' ) ), MainWP_Helper::return_bytes( ini_get( 'post_max_size' ) ) );
 		$uploadSize        = MainWP_Helper::human_filesize( $uploadSizeInBytes );
@@ -800,6 +849,9 @@ class MainWP_Clone_Page {
 		<?php
 	}
 
+	/**
+	 * Render style.
+	 */
 	public static function render_style() {
 		?>
 		<style>
@@ -1063,6 +1115,11 @@ class MainWP_Clone_Page {
 		<?php
 	}
 
+	/**
+	 * Method permalink_admin_notice()
+	 *
+	 * @deprecated Unused Element.
+	 */
 	public static function permalink_admin_notice() {
 		if ( isset( $_POST['permalink_structure'] ) || isset( $_POST['category_base'] ) || isset( $_POST['tag_base'] ) ) {
 			return;
@@ -1094,6 +1151,9 @@ class MainWP_Clone_Page {
 		<?php
 	}
 
+	/**
+	 * Render Restore.
+	 */
 	public static function render_restore() {
 		if ( '' === session_id() ) {
 			session_start();
diff --git a/class/class-mainwp-custom-post-type.php b/class/class-mainwp-custom-post-type.php
index 2699ef3..c01eda3 100755
--- a/class/class-mainwp-custom-post-type.php
+++ b/class/class-mainwp-custom-post-type.php
@@ -1,12 +1,35 @@
 <?php
-
+/**
+ * MainWP Custom Post Type
+ *
+ * This file handles all custom post types.
+ */
 namespace MainWP\Child;
 
+/**
+ * Class MainWP_Custom_Post_Type
+ *
+ * @package MainWP\Child
+ */
 class MainWP_Custom_Post_Type {
-	public static $instance    = null;
-	public static $information = array();
-	public $plugin_translate   = 'mainwp-child';
 
+	/**
+	 * @static
+	 * @var null Holds the Public static instance of MainWP_Custom_Post_Type.
+	 */
+	public static $instance = null;
+
+	/** @var array Response array. */
+	public static $information = array();
+
+	/** @var string Plugin slug. */
+	public $plugin_translate = 'mainwp-child';
+
+	/**
+	 * Create a public static instance of MainWP_Custom_Post_Type.
+	 *
+	 * @return MainWP_Custom_Post_Type|null
+	 */
 	public static function instance() {
 		if ( null == self::$instance ) {
 			self::$instance = new self();
@@ -15,7 +38,16 @@ class MainWP_Custom_Post_Type {
 		return self::$instance;
 	}
 
+	/**
+	 * Custom post type action.
+	 */
 	public function action() {
+
+		/**
+		 * Method mainwp_custom_post_type_handle_fatal_error()
+		 *
+		 * Custom post type fatal error handler.
+		 */
 		function mainwp_custom_post_type_handle_fatal_error() {
 			$error = error_get_last();
 			if ( isset( $error['type'] ) && E_ERROR === $error['type'] && isset( $error['message'] ) ) {
@@ -29,11 +61,12 @@ class MainWP_Custom_Post_Type {
 			} else {
 				$data = serialize( $data ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions
 			}
-			die( '<mainwp>' . base64_encode( $data ) . '</mainwp>' ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode function is used for http encode compatible..
+			die( '<mainwp>' . base64_encode( $data ) . '</mainwp>' ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode function is used for http encode compatibility.
 		}
 
 		register_shutdown_function( 'MainWP\Child\MainWP_Custom_Post_Type\mainwp_custom_post_type_handle_fatal_error' );
 
+		/** @var $information @deprecated Unused local variable 'information'. The value of the variable is overwritten immediately. */
 		$information = array();
 		switch ( $_POST['action'] ) {
 			case 'custom_post_type_import':
@@ -50,7 +83,13 @@ class MainWP_Custom_Post_Type {
 		exit();
 	}
 
+	/**
+	 * Import custom post type.
+	 *
+	 * @return array|string[] $return Response array, or error message on failure.
+	 */
 	private function import_custom_post() {
+
 		add_filter( 'http_request_host_is_external', '__return_true' );
 
 		if ( ! isset( $_POST['data'] ) || strlen( $_POST['data'] ) < 2 ) {
@@ -76,10 +115,13 @@ class MainWP_Custom_Post_Type {
 		return $return;
 	}
 
-
-
 	/**
-	 * Search image inside post content and upload it to child
+	 * Search for images inside post content and upload it to Child Site.
+	 *
+	 * @param string $post_content Post content to search.
+	 * @param string $upload_dir Upload directory.
+	 * @param bool   $check_image Check if file exists. Default: false.
+	 * @return string|string[] Error message or post content string.
 	 */
 	private function search_images( $post_content, $upload_dir, $check_image = false ) {
 		$foundMatches = preg_match_all( '/(<a[^>]+href=\"(.*?)\"[^>]*>)?(<img[^>\/]*src=\"((.*?)(png|gif|jpg|jpeg))\")/ix', $post_content, $matches, PREG_SET_ORDER );
@@ -132,6 +174,15 @@ class MainWP_Custom_Post_Type {
 		return $post_content;
 	}
 
+	/**
+	 * Insert data into published post.
+	 *
+	 * @param string $data Data to insert.
+	 * @param int    $edit_id Post ID to edit.
+	 * @param int    $parent_id Post parent ID.
+	 *
+	 * @return array|bool|string[] Response array, true|false, Error message.
+	 */
 	private function insert_post( $data, $edit_id, $parent_id = 0 ) {
 		$data_insert                = array();
 		$data_post                  = $data['post'];
@@ -234,6 +285,13 @@ class MainWP_Custom_Post_Type {
 		);
 	}
 
+	/**
+	 * Insert custom post data.
+	 *
+	 * @param int    $post_id Post ID to update.
+	 * @param string $data Custom data to add.
+	 * @return array|bool|string[] Response array, true|false, Error message.
+	 */
 	private function insert_custom_data( $post_id, $data ) {
 
 		// MainWP Categories.
@@ -296,6 +354,16 @@ class MainWP_Custom_Post_Type {
 		return true;
 	}
 
+	/**
+	 * Insert post meta.
+	 *
+	 * @param int    $post_id Post ID to update.
+	 * @param string $data Meta datat add.
+	 * @param bool   $check_image_existed Whether or not to check if image exists. true|false.
+	 * @param bool   $is_woocomerce Whether or not the post is a woocommerce product. true|false.
+	 *
+	 * @return array|bool|string[] Response array, true|false, Error message.
+	 */
 	private function insert_postmeta( $post_id, $data, $check_image_existed, $is_woocomerce ) {
 		foreach ( $data['postmeta'] as $key ) {
 			if ( isset( $key['meta_key'] ) && isset( $key['meta_value'] ) ) {
@@ -345,6 +413,14 @@ class MainWP_Custom_Post_Type {
 		return true;
 	}
 
+	/**
+	 * Upload post meta image.
+	 *
+	 * @param array               $product_images Woocomerce product images.
+	 * @param $meta_value
+	 * @param $check_image_existed
+	 * @return array|bool Error message array or TRUE on success.
+	 */
 	private function upload_postmeta_image( $product_images, &$meta_value, $check_image_existed ) {
 		$product_image_gallery = array();
 		foreach ( $product_images as $product_image ) {
diff --git a/class/class-mainwp-helper.php b/class/class-mainwp-helper.php
index e64a066..4dfd811 100644
--- a/class/class-mainwp-helper.php
+++ b/class/class-mainwp-helper.php
@@ -259,6 +259,8 @@ class MainWP_Helper {
 	 * @param string $url URL to check.
 	 *
 	 * @return array $r Updated array containing the request data.
+	 *
+	 * @deprecated Unused Element
 	 */
 	public static function reject_unsafe_urls( $r, $url ) {
 		$r['reject_unsafe_urls'] = false;
diff --git a/class/class-mainwp-utility.php b/class/class-mainwp-utility.php
index 8d92e74..d59ed29 100644
--- a/class/class-mainwp-utility.php
+++ b/class/class-mainwp-utility.php
@@ -226,7 +226,7 @@ class MainWP_Utility {
 	 * @param string $to_email Contains the send to email address.
 	 * @param string $body Contains the email content.
 	 *
-	 * @return srting Return formated email.
+	 * @return string Return formatted email.
 	 */
 	public static function format_email( $to_email, $body ) {
 		return '<br>
@@ -317,6 +317,8 @@ class MainWP_Utility {
 	 * Start job if in cron and run query args are set.
 	 *
 	 * @return void
+	 *
+	 * @deprecated Unused Element
 	 */
 	public static function cron_active() {
 		if ( ! defined( 'DOING_CRON' ) || ! DOING_CRON ) {