diff --git a/application/views/appointments/book.php b/application/views/appointments/book.php
index 030b09d0..568e700f 100755
--- a/application/views/appointments/book.php
+++ b/application/views/appointments/book.php
@@ -1,3 +1,24 @@
+<?php
+/**
+ * @var string $company_name
+ * @var string $customer_token
+ * @var string $date_format
+ * @var string $time_format
+ * @var string $first_weekday
+ * @var bool $manage_mode
+ * @var array $appointment_data
+ * @var array $provider_data
+ * @var array $customer_data
+ * @var array $available_services
+ * @var array $available_providers
+ * @var array $show_field
+ * @var bool $require_phone_number
+ * @var string $display_any_provider
+ * @var string $display_terms_and_conditions
+ * @var string $display_privacy_policy
+ * @var string $display_cookie_notice
+ */
+?>
 <!doctype html>
 <html lang="en">
 <head>
@@ -62,7 +83,7 @@
 
                             <input type="hidden" name="csrfToken" value="<?= $this->security->get_csrf_hash() ?>"/>
 
-                            <textarea name="cancel_reason" style="display:none"></textarea>
+                            <input id="cancel-reason" name="cancel_reason" type="hidden">
 
                             <button id="cancel-appointment" class="btn btn-warning btn-sm">
                                 <?= lang('cancel') ?>
@@ -360,14 +381,14 @@
                     <?php if (setting('require_captcha')): ?>
                         <div class="row frame-content">
                             <div class="col-12 col-md-6">
-                                <h4 class="captcha-title">
+                                <label class="captcha-title" for="captcha-text">
                                     CAPTCHA
                                     <button class="btn btn-link text-dark text-decoration-none py-0">
                                         <i class="fas fa-sync-alt"></i>
                                     </button>
-                                </h4>
-                                <img class="captcha-image" src="<?= site_url('captcha') ?>">
-                                <input class="captcha-text form-control" type="text" value=""/>
+                                </label>
+                                <img class="captcha-image" src="<?= site_url('captcha') ?>" alt="CAPTCHA">
+                                <input id="captcha-text" class="captcha-text form-control" type="text" value=""/>
                                 <span id="captcha-hint" class="help-block" style="opacity:0">&nbsp;</span>
                             </div>
                         </div>
diff --git a/application/views/appointments/book_success.php b/application/views/appointments/book_success.php
index 07b0260b..70b4230b 100755
--- a/application/views/appointments/book_success.php
+++ b/application/views/appointments/book_success.php
@@ -1,4 +1,11 @@
-<!doctype html>
+<?php
+/**
+ * @var string $company_name
+ * @var array $appointment_data
+ * @var array $provider_data
+ * @var array $customer_data
+ */
+?><!doctype html>
 <html lang="en">
 <head>
     <meta charset="utf-8">
@@ -21,7 +28,7 @@
     <div class="row wrapper">
         <div id="success-frame" class="col-12 border my-auto frame-container">
             <div>
-                <img id="success-icon" class="mt-0 mb-2" src="<?= base_url('assets/img/success.png') ?>"/>
+                <img id="success-icon" class="mt-0 mb-2" src="<?= base_url('assets/img/success.png') ?>" alt="success"/>
             </div>
 
             <div>
diff --git a/application/views/appointments/message.php b/application/views/appointments/message.php
index 84e35927..c725148d 100644
--- a/application/views/appointments/message.php
+++ b/application/views/appointments/message.php
@@ -1,3 +1,10 @@
+<?php
+/**
+ * @var string $message_title
+ * @var string $message_icon
+ * @var string $message_text
+ */
+?>
 <!doctype html>
 <html lang="en">
 <head>
diff --git a/application/views/backend/calendar.php b/application/views/backend/calendar.php
index 492425ca..6a18f85b 100755
--- a/application/views/backend/calendar.php
+++ b/application/views/backend/calendar.php
@@ -1,3 +1,24 @@
+<?php
+/**
+ * @var array $available_providers
+ * @var array $available_services
+ * @var string $base_url
+ * @var string $date_format
+ * @var string $time_format
+ * @var string $first_weekday
+ * @var array $edit_appointment
+ * @var array $customers
+ * @var array $secretary_providers
+ * @var string $calendar_view
+ * @var string $timezones
+ * @var string $user_id
+ * @var string $user_email
+ * @var string $timezone
+ * @var string $role_slug
+ * @var array $privileges
+ */
+?>
+
 <link rel="stylesheet" type="text/css" href="<?= asset_url('/assets/vendor/fullcalendar/fullcalendar.min.css') ?>">
 
 <script src="<?= asset_url('assets/vendor/fullcalendar/fullcalendar.min.js') ?>"></script>
diff --git a/application/views/backend/customers.php b/application/views/backend/customers.php
index 0a4d83fc..aacef993 100755
--- a/application/views/backend/customers.php
+++ b/application/views/backend/customers.php
@@ -1,3 +1,20 @@
+<?php
+/**
+ * @var array $available_providers
+ * @var array $available_services
+ * @var array $secretary_providers
+ * @var string $date_format
+ * @var string $time_format
+ * @var string $base_url
+ * @var array $customers
+ * @var string $timezones
+ * @var string $user_id
+ * @var string $user_email
+ * @var string $timezone
+ * @var string $role_slug
+ * @var array $privileges
+ */
+?>
 <script src="<?= asset_url('assets/vendor/jquery-ui-timepicker-addon/jquery-ui-timepicker-addon.min.js') ?>"></script>
 <script src="<?= asset_url('assets/js/backend_customers_helper.js') ?>"></script>
 <script src="<?= asset_url('assets/js/backend_customers.js') ?>"></script>
diff --git a/application/views/backend/footer.php b/application/views/backend/footer.php
index 156761cf..6509332c 100644
--- a/application/views/backend/footer.php
+++ b/application/views/backend/footer.php
@@ -1,3 +1,8 @@
+<?php
+/**
+ * @var string $user_display_name
+ */
+?>
 <div id="footer">
     <div id="footer-content" class="col-12 col-sm-8">
         <img class="mr-1" src="<?= base_url('assets/img/logo-16x16.png') ?>" alt="Easy!Appointments Logo">
diff --git a/application/views/backend/header.php b/application/views/backend/header.php
index e898a6ae..a42148dd 100755
--- a/application/views/backend/header.php
+++ b/application/views/backend/header.php
@@ -1,3 +1,11 @@
+<?php
+/**
+ * @var string $page_title
+ * @var array $active_menu
+ * @var array $privileges
+ */
+?>
+
 <!doctype html>
 <html lang="en">
 <head>
diff --git a/application/views/backend/services.php b/application/views/backend/services.php
index 444d2c6d..07b7fc54 100755
--- a/application/views/backend/services.php
+++ b/application/views/backend/services.php
@@ -1,3 +1,18 @@
+<?php
+/**
+ * @var array $categories
+ * @var array $services
+ * @var string $date_format
+ * @var string $time_format
+ * @var string $base_url
+ * @var string $timezones
+ * @var string $user_id
+ * @var string $user_email
+ * @var string $timezone
+ * @var string $role_slug
+ * @var array $privileges
+ */
+?>
 <script src="<?= asset_url('assets/js/backend_services_helper.js') ?>"></script>
 <script src="<?= asset_url('assets/js/backend_categories_helper.js') ?>"></script>
 <script src="<?= asset_url('assets/js/backend_services.js') ?>"></script>
diff --git a/application/views/backend/settings.php b/application/views/backend/settings.php
index c3f8021c..45bde40f 100755
--- a/application/views/backend/settings.php
+++ b/application/views/backend/settings.php
@@ -1,3 +1,19 @@
+<?php
+/**
+ * @var string $first_weekday
+ * @var array $system_settings
+ * @var array $user_settings
+ * @var string $date_format
+ * @var string $time_format
+ * @var string $base_url
+ * @var string $timezones
+ * @var string $user_id
+ * @var string $user_email
+ * @var string $timezone
+ * @var string $role_slug
+ * @var array $privileges
+ */
+?>
 <script src="<?= asset_url('assets/js/backend_settings_system.js') ?>"></script>
 <script src="<?= asset_url('assets/js/backend_settings_user.js') ?>"></script>
 <script src="<?= asset_url('assets/js/backend_settings.js') ?>"></script>
@@ -206,36 +222,36 @@
                         <div class="form-group">
                                     <label for="show-phone-number"><?= lang('phone_number') ?></label>
                                 <button id="show-phone-number" data-field="show_phone_number" type="button" class="hide-toggle form-control form-sub-button">
-                                    <div class="hide-toggle-visible hidden"><img src="<?= base_url('assets/img/eye.svg') ?>"/> <?= lang('visible') ?></div>
-                                    <div class="hide-toggle-hidden"><img src="<?= base_url('assets/img/eye-hidden.svg') ?>"/> <?= lang('hidden') ?></div>
+                                    <span class="hide-toggle-visible hidden"><img src="<?= base_url('assets/img/eye.svg') ?>"/> <?= lang('visible') ?></span>
+                                    <span class="hide-toggle-hidden"><img src="<?= base_url('assets/img/eye-hidden.svg') ?>"/> <?= lang('hidden') ?></span>
                                 </button>
                             </div>
                             <div class="form-group">
                                     <label for="show-address"><?= lang('address') ?></label>
                                 <button id="show-address" data-field="show_address" type="button" class="hide-toggle form-control form-sub-button">
-                                    <div class="hide-toggle-visible hidden"><img src="<?= base_url('assets/img/eye.svg') ?>"/> <?= lang('visible') ?></div>
-                                    <div class="hide-toggle-hidden"><img src="<?= base_url('assets/img/eye-hidden.svg') ?>"/> <?= lang('hidden') ?></div>
+                                    <span class="hide-toggle-visible hidden"><img src="<?= base_url('assets/img/eye.svg') ?>"/> <?= lang('visible') ?></span>
+                                    <span class="hide-toggle-hidden"><img src="<?= base_url('assets/img/eye-hidden.svg') ?>"/> <?= lang('hidden') ?></span>
                                 </button>
                             </div>
                             <div class="form-group">
                                     <label for="show-city"><?= lang('city') ?></label>
                                 <button id="show-city" data-field="show_city" type="button" class="hide-toggle form-control form-sub-button">
-                                    <div class="hide-toggle-visible hidden"><img src="<?= base_url('assets/img/eye.svg') ?>"/> <?= lang('visible') ?></div>
-                                    <div class="hide-toggle-hidden"><img src="<?= base_url('assets/img/eye-hidden.svg') ?>"/> <?= lang('hidden') ?></div>
+                                    <span class="hide-toggle-visible hidden"><img src="<?= base_url('assets/img/eye.svg') ?>"/> <?= lang('visible') ?></span>
+                                    <span class="hide-toggle-hidden"><img src="<?= base_url('assets/img/eye-hidden.svg') ?>"/> <?= lang('hidden') ?></span>
                                 </button>
                             </div>
                             <div class="form-group">
                                     <label for="show-zip-code"><?= lang('zip_code') ?></label>
                                 <button id="show-zip-code" data-field="show_zip_code" type="button" class="hide-toggle form-control form-sub-button">
-                                    <div class="hide-toggle-visible hidden"><img src="<?= base_url('assets/img/eye.svg') ?>"/> <?= lang('visible') ?></div>
-                                    <div class="hide-toggle-hidden"><img src="<?= base_url('assets/img/eye-hidden.svg') ?>"/> <?= lang('hidden') ?></div>
+                                    <span class="hide-toggle-visible hidden"><img src="<?= base_url('assets/img/eye.svg') ?>"/> <?= lang('visible') ?></span>
+                                    <span class="hide-toggle-hidden"><img src="<?= base_url('assets/img/eye-hidden.svg') ?>"/> <?= lang('hidden') ?></span>
                                 </button>
                             </div>
                             <div class="form-group">
                                     <label for="show-notes"><?= lang('notes') ?></label>
                                 <button id="show-notes" data-field="show_notes" type="button" class="hide-toggle form-control form-sub-button">
-                                    <div class="hide-toggle-visible hidden"><img src="<?= base_url('assets/img/eye.svg') ?>"/> <?= lang('visible') ?></div>
-                                    <div class="hide-toggle-hidden"><img src="<?= base_url('assets/img/eye-hidden.svg') ?>"/> <?= lang('hidden') ?></div>
+                                    <span class="hide-toggle-visible hidden"><img src="<?= base_url('assets/img/eye.svg') ?>"/> <?= lang('visible') ?></span>
+                                    <span class="hide-toggle-hidden"><img src="<?= base_url('assets/img/eye-hidden.svg') ?>"/> <?= lang('hidden') ?></span>
                                 </button>
                             </div>
                         </div>
diff --git a/application/views/backend/users.php b/application/views/backend/users.php
index e83e9880..aa7e3aaa 100755
--- a/application/views/backend/users.php
+++ b/application/views/backend/users.php
@@ -1,3 +1,25 @@
+<?php
+/**
+ * @var array $providers
+ * @var array $services
+ * @var array $secretaries
+ * @var array $admins
+ * @var string $date_format
+ * @var string $time_format
+ * @var string $first_weekday
+ * @var string $base_url
+ * @var array $customers
+ * @var string $timezones
+ * @var string $user_id
+ * @var string $user_email
+ * @var string $timezone
+ * @var string $role_slug
+ * @var array $privileges
+ * @var string $working_plan
+ * @var array $working_plan_exceptions
+ */
+?>
+
 <script src="<?= asset_url('assets/js/backend_users_admins.js') ?>"></script>
 <script src="<?= asset_url('assets/js/backend_users_providers.js') ?>"></script>
 <script src="<?= asset_url('assets/js/backend_users_secretaries.js') ?>"></script>
@@ -374,18 +396,18 @@
                         <div class="input-group">
                             <input type="text" class="key form-control">
 
-                            <span class="input-group-addon">
-                        <div>
-                            <button class="filter btn btn-outline-secondary" type="submit"
-                                    data-tippy-content="<?= lang('filter') ?>">
-                                <i class="fas fa-search"></i>
-                            </button>
-                            <button class="clear btn btn-outline-secondary" type="button"
-                                    data-tippy-content="<?= lang('clear') ?>">
-                                <i class="fas fa-redo-alt"></i>
-                            </button>
-                        </div>
-                    </span>
+                            <div class="input-group-addon">
+                                <div>
+                                    <button class="filter btn btn-outline-secondary" type="submit"
+                                            data-tippy-content="<?= lang('filter') ?>">
+                                        <i class="fas fa-search"></i>
+                                    </button>
+                                    <button class="clear btn btn-outline-secondary" type="button"
+                                            data-tippy-content="<?= lang('clear') ?>">
+                                        <i class="fas fa-redo-alt"></i>
+                                    </button>
+                                </div>
+                            </div>
                         </div>
                     </form>
 
@@ -582,18 +604,18 @@
                         <div class="input-group">
                             <input type="text" class="key form-control">
 
-                            <span class="input-group-addon">
-                        <div>
-                            <button class="filter btn btn-outline-secondary" type="submit"
-                                    data-tippy-content="<?= lang('filter') ?>">
-                                <i class="fas fa-search"></i>
-                            </button>
-                            <button class="clear btn btn-outline-secondary" type="button"
-                                    data-tippy-content="<?= lang('clear') ?>">
-                                <i class="fas fa-redo-alt"></i>
-                            </button>
-                        </div>
-                    </span>
+                            <div class="input-group-addon">
+                                <div>
+                                    <button class="filter btn btn-outline-secondary" type="submit"
+                                            data-tippy-content="<?= lang('filter') ?>">
+                                        <i class="fas fa-search"></i>
+                                    </button>
+                                    <button class="clear btn btn-outline-secondary" type="button"
+                                            data-tippy-content="<?= lang('clear') ?>">
+                                        <i class="fas fa-redo-alt"></i>
+                                    </button>
+                                </div>
+                            </div>
                         </div>
                     </form>
 
@@ -640,7 +662,7 @@
                     <div class="row">
                         <div class="admin-details col-12 col-md-6">
                             <div class="form-group">
-                                <label for="first-name">
+                                <label for="admin-first-name">
                                     <?= lang('first_name') ?>
                                     <span class="text-danger">*</span>
                                 </label>
diff --git a/application/views/emails/appointment_details.php b/application/views/emails/appointment_details.php
index 6b04918c..a3bda6fd 100644
--- a/application/views/emails/appointment_details.php
+++ b/application/views/emails/appointment_details.php
@@ -1,3 +1,22 @@
+<?php
+/**
+ * @var string $company_name
+ * @var string $email_title
+ * @var string $email_message
+ * @var array $appointment_service
+ * @var string $appointment_provider
+ * @var string $appointment_start_date
+ * @var string $appointment_end_date
+ * @var string $appointment_timezone
+ * @var string $customer_name
+ * @var string $customer_email
+ * @var string $customer_phone
+ * @var string $customer_address
+ * @var string $appointment_link
+ * @var string $company_link
+ */
+?>
+
 <html lang="en">
 <head>
     <title><?= lang('appointment_details_title') ?> | Easy!Appointments</title>
diff --git a/application/views/emails/delete_appointment.php b/application/views/emails/delete_appointment.php
index 4b057bf6..fdc76c1c 100644
--- a/application/views/emails/delete_appointment.php
+++ b/application/views/emails/delete_appointment.php
@@ -1,3 +1,19 @@
+<?php
+/**
+ * @var string $company_name
+ * @var string $appointment_service
+ * @var string $appointment_provider
+ * @var string $appointment_duration
+ * @var string $appointment_timezone
+ * @var string $customer_name
+ * @var string $customer_email
+ * @var string $customer_phone
+ * @var string $customer_address
+ * @var string $reason
+ * @var string $company_link
+ */
+?>
+
 <html lang="en">
 <head>
     <title><?= lang('appointment_cancelled_title') ?> | Easy!Appointments</title>
diff --git a/application/views/emails/new_password.php b/application/views/emails/new_password.php
index 157d52dc..f1efb4b8 100644
--- a/application/views/emails/new_password.php
+++ b/application/views/emails/new_password.php
@@ -1,3 +1,11 @@
+<?php
+/**
+ * @var string $company_name
+ * @var string $email_title
+ * @var string $email_message
+ * @var string $company_link
+ */
+?>
 <html lang="en">
 <head>
     <title>New Password | Easy!Appointments</title>
diff --git a/application/views/general/update.php b/application/views/general/update.php
index 7a894921..2cdc926b 100644
--- a/application/views/general/update.php
+++ b/application/views/general/update.php
@@ -1,3 +1,10 @@
+<?php
+/**
+ * @var bool $success
+ * @var string $exception
+ */
+?>
+
 <!doctype html>
 <html lang="en">
 <head>
diff --git a/application/views/modals/cookie_notice_modal.php b/application/views/modals/cookie_notice_modal.php
index 61ee08ee..934f84fb 100644
--- a/application/views/modals/cookie_notice_modal.php
+++ b/application/views/modals/cookie_notice_modal.php
@@ -1,3 +1,8 @@
+<?php
+/**
+ * @var string $cookie_notice_content
+ */
+?>
 <div id="cookie-notice-modal" class="modal fade" tabindex="-1">
     <div class="modal-dialog">
         <div class="modal-content">
diff --git a/application/views/modals/manage_appointment_modal.php b/application/views/modals/manage_appointment_modal.php
index ae102cff..4da0d229 100644
--- a/application/views/modals/manage_appointment_modal.php
+++ b/application/views/modals/manage_appointment_modal.php
@@ -1,3 +1,10 @@
+<?php
+/**
+ * @var array $available_services
+ * @var array $timezones
+ * @var string $require_phone_number
+ */
+?>
 <div id="manage-appointment" class="modal fade" tabindex="-1">
     <div class="modal-dialog modal-lg">
         <div class="modal-content">
diff --git a/application/views/modals/manage_unavailable_modal.php b/application/views/modals/manage_unavailable_modal.php
index f9520f82..8c9f98e6 100644
--- a/application/views/modals/manage_unavailable_modal.php
+++ b/application/views/modals/manage_unavailable_modal.php
@@ -1,3 +1,9 @@
+<?php
+/**
+ * @var array $timezones
+ */
+?>
+
 <div id="manage-unavailable" class="modal fade" tabindex="-1">
     <div class="modal-dialog">
         <div class="modal-content">
diff --git a/application/views/modals/privacy_policy_modal.php b/application/views/modals/privacy_policy_modal.php
index 7fdb007b..b57b59fc 100644
--- a/application/views/modals/privacy_policy_modal.php
+++ b/application/views/modals/privacy_policy_modal.php
@@ -1,3 +1,9 @@
+<?php
+/**
+ * @var string $privacy_policy_content
+ */
+?>
+
 <div id="privacy-policy-modal" class="modal fade" tabindex="-1">
     <div class="modal-dialog">
         <div class="modal-content">
diff --git a/application/views/modals/terms_and_conditions_modal.php b/application/views/modals/terms_and_conditions_modal.php
index 2ea9229e..94df9468 100644
--- a/application/views/modals/terms_and_conditions_modal.php
+++ b/application/views/modals/terms_and_conditions_modal.php
@@ -1,3 +1,9 @@
+<?php
+/**
+ * @var string $terms_and_conditions_content
+ */
+?>
+
 <div id="terms-and-conditions-modal" class="modal fade" tabindex="-1">
     <div class="modal-dialog">
         <div class="modal-content">
diff --git a/application/views/partials/timezone_dropdown.php b/application/views/partials/timezone_dropdown.php
index 77a34ec2..ed41c181 100644
--- a/application/views/partials/timezone_dropdown.php
+++ b/application/views/partials/timezone_dropdown.php
@@ -1,3 +1,10 @@
+<?php
+/**
+ * @var string $attributes
+ * @var array $timezones
+ */
+?>
+
 <select <?= $attributes ?>>
     <?php foreach ($timezones as $continent => $entries): ?>
         <optgroup label="<?= $continent ?>">
diff --git a/application/views/user/login.php b/application/views/user/login.php
index 7194d075..9f9560a5 100644
--- a/application/views/user/login.php
+++ b/application/views/user/login.php
@@ -1,3 +1,10 @@
+<?php
+/**
+ * @var string $base_url
+ * @var string $dest_url
+ */
+?>
+
 <!doctype html>
 <html lang="en">
 <head>
