diff --git a/config/optional/core.entity_form_display.taxonomy_term.captcha_widgets.default.yml b/config/optional/core.entity_form_display.taxonomy_term.captcha_widgets.default.yml
new file mode 100644
index 0000000..889e12b
--- /dev/null
+++ b/config/optional/core.entity_form_display.taxonomy_term.captcha_widgets.default.yml
@@ -0,0 +1,64 @@
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.field.taxonomy_term.captcha_widgets.field_captcha_type
+    - field.field.taxonomy_term.captcha_widgets.field_site_key
+    - taxonomy.vocabulary.captcha_widgets
+  module:
+    - path
+    - text
+id: taxonomy_term.captcha_widgets.default
+targetEntityType: taxonomy_term
+bundle: captcha_widgets
+mode: default
+content:
+  description:
+    type: text_textarea
+    weight: 4
+    region: content
+    settings:
+      rows: 5
+      placeholder: ''
+    third_party_settings: {  }
+  field_captcha_type:
+    type: options_select
+    weight: 1
+    region: content
+    settings: {  }
+    third_party_settings: {  }
+  field_site_key:
+    type: string_textfield
+    weight: 3
+    region: content
+    settings:
+      size: 60
+      placeholder: ''
+    third_party_settings: {  }
+  name:
+    type: string_textfield
+    weight: 0
+    region: content
+    settings:
+      size: 60
+      placeholder: ''
+    third_party_settings: {  }
+  path:
+    type: path
+    weight: 5
+    region: content
+    settings: {  }
+    third_party_settings: {  }
+  simple_sitemap:
+    weight: 10
+    region: content
+    settings: {  }
+    third_party_settings: {  }
+  status:
+    type: boolean_checkbox
+    weight: 6
+    region: content
+    settings:
+      display_label: true
+    third_party_settings: {  }
+hidden: {  }
diff --git a/config/optional/core.entity_view_display.taxonomy_term.captcha_widgets.default.yml b/config/optional/core.entity_view_display.taxonomy_term.captcha_widgets.default.yml
new file mode 100644
index 0000000..e9cd673
--- /dev/null
+++ b/config/optional/core.entity_view_display.taxonomy_term.captcha_widgets.default.yml
@@ -0,0 +1,39 @@
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.field.taxonomy_term.captcha_widgets.field_captcha_type
+    - field.field.taxonomy_term.captcha_widgets.field_site_key
+    - taxonomy.vocabulary.captcha_widgets
+  module:
+    - options
+    - text
+id: taxonomy_term.captcha_widgets.default
+targetEntityType: taxonomy_term
+bundle: captcha_widgets
+mode: default
+content:
+  description:
+    type: text_default
+    label: hidden
+    settings: {  }
+    third_party_settings: {  }
+    weight: 0
+    region: content
+  field_captcha_type:
+    type: list_default
+    label: above
+    settings: {  }
+    third_party_settings: {  }
+    weight: 2
+    region: content
+  field_site_key:
+    type: string
+    label: above
+    settings:
+      link_to_entity: false
+    third_party_settings: {  }
+    weight: 1
+    region: content
+hidden:
+  search_api_excerpt: true
diff --git a/config/optional/field.field.taxonomy_term.captcha_widgets.field_captcha_type.yml b/config/optional/field.field.taxonomy_term.captcha_widgets.field_captcha_type.yml
new file mode 100644
index 0000000..11aec33
--- /dev/null
+++ b/config/optional/field.field.taxonomy_term.captcha_widgets.field_captcha_type.yml
@@ -0,0 +1,20 @@
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.taxonomy_term.field_captcha_type
+    - taxonomy.vocabulary.captcha_widgets
+  module:
+    - options
+id: taxonomy_term.captcha_widgets.field_captcha_type
+field_name: field_captcha_type
+entity_type: taxonomy_term
+bundle: captcha_widgets
+label: 'Captcha type'
+description: ''
+required: true
+translatable: false
+default_value: {  }
+default_value_callback: ''
+settings: {  }
+field_type: list_string
diff --git a/config/optional/field.field.taxonomy_term.captcha_widgets.field_site_key.yml b/config/optional/field.field.taxonomy_term.captcha_widgets.field_site_key.yml
new file mode 100644
index 0000000..efa2780
--- /dev/null
+++ b/config/optional/field.field.taxonomy_term.captcha_widgets.field_site_key.yml
@@ -0,0 +1,18 @@
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.taxonomy_term.field_site_key
+    - taxonomy.vocabulary.captcha_widgets
+id: taxonomy_term.captcha_widgets.field_site_key
+field_name: field_site_key
+entity_type: taxonomy_term
+bundle: captcha_widgets
+label: 'Site key'
+description: ''
+required: false
+translatable: false
+default_value: {  }
+default_value_callback: ''
+settings: {  }
+field_type: string
diff --git a/config/optional/field.storage.taxonomy_term.field_captcha_type.yml b/config/optional/field.storage.taxonomy_term.field_captcha_type.yml
new file mode 100644
index 0000000..a178c31
--- /dev/null
+++ b/config/optional/field.storage.taxonomy_term.field_captcha_type.yml
@@ -0,0 +1,29 @@
+langcode: en
+status: true
+dependencies:
+  module:
+    - options
+    - taxonomy
+id: taxonomy_term.field_captcha_type
+field_name: field_captcha_type
+entity_type: taxonomy_term
+type: list_string
+settings:
+  allowed_values:
+    -
+      value: google_recaptcha_v3
+      label: 'Google reCAPTCHA v3'
+    -
+      value: google_recaptcha_v2
+      label: 'Google reCAPTCHA v2'
+    -
+      value: cloudfare_turnstile
+      label: 'Cloudfare Turnstile'
+  allowed_values_function: ''
+module: options
+locked: false
+cardinality: 1
+translatable: true
+indexes: {  }
+persist_with_no_fields: false
+custom_storage: false
diff --git a/config/optional/field.storage.taxonomy_term.field_site_key.yml b/config/optional/field.storage.taxonomy_term.field_site_key.yml
new file mode 100644
index 0000000..ed26eed
--- /dev/null
+++ b/config/optional/field.storage.taxonomy_term.field_site_key.yml
@@ -0,0 +1,20 @@
+langcode: en
+status: true
+dependencies:
+  module:
+    - taxonomy
+id: taxonomy_term.field_site_key
+field_name: field_site_key
+entity_type: taxonomy_term
+type: string
+settings:
+  max_length: 255
+  case_sensitive: false
+  is_ascii: false
+module: core
+locked: false
+cardinality: 1
+translatable: true
+indexes: {  }
+persist_with_no_fields: false
+custom_storage: false
diff --git a/config/optional/taxonomy.vocabulary.captcha_widgets.yml b/config/optional/taxonomy.vocabulary.captcha_widgets.yml
new file mode 100644
index 0000000..4891d46
--- /dev/null
+++ b/config/optional/taxonomy.vocabulary.captcha_widgets.yml
@@ -0,0 +1,7 @@
+langcode: en
+status: true
+dependencies: {  }
+name: 'CAPTCHA widgets'
+vid: captcha_widgets
+description: ''
+weight: 0
diff --git a/tests/behat/features/webform.feature b/tests/behat/features/webform.feature
index 2a69978..3704d1d 100644
--- a/tests/behat/features/webform.feature
+++ b/tests/behat/features/webform.feature
@@ -10,3 +10,26 @@ Feature: Webform "Content Rating" exists.
     And save screenshot
 
     And I see the text "Was this page helpful"
+
+  @api @nosuggest @javascript
+  Scenario: Webform "Tide webform CAPTCHA" exists.
+    Given I am logged in as a user with the "administrator" role
+    And captcha_widgets terms:
+      | name        | parent | tid   | field_captcha_type  | field_site_key |
+      | Test Site 1 | 0      | 10001 | google_recaptcha_v3 | abcd          |
+    When I visit "admin/structure/webform/manage/contact/settings"
+    And I click on the detail "Third party settings"
+    Then I see the text "Tide webform CAPTCHA"
+    Then I see the text "Enable captcha"
+    Then I see the text "Captcha type"
+    Then I select "Google reCAPTCHA v3" from "Captcha type"
+    And I wait for AJAX to finish
+    Then I select "Test Site 1" from "Site key"
+    Then I fill in "Score threshold (reCAPTCHA v3)?" with "0.1"
+    Then I check "Enable captcha"
+    And I press "Save"
+    Then I visit "admin/structure/webform/manage/contact/export"
+    And I see the text "captcha_type: google_recaptcha_v3"
+    And I see the text "score_threshold: 0.1"
+    And I see the text "site_key: abcd"
+    And save screenshot
diff --git a/tide_webform.install b/tide_webform.install
index e791e26..0370804 100644
--- a/tide_webform.install
+++ b/tide_webform.install
@@ -25,3 +25,30 @@ function tide_webform_update_10001() {
   $config->set('element.excluded_elements', $excluded_elements_value);
   $config->save();
 }
+
+/**
+ * Import configs for Captcha feature.
+ */
+function tide_webform_update_10002() {
+  $configs = [
+    'taxonomy.vocabulary.captcha_widgets' => 'taxonomy_vocabulary',
+    'field.storage.taxonomy_term.field_site_key' => 'field_storage_config',
+    'field.storage.taxonomy_term.field_captcha_type' => 'field_storage_config',
+    'field.field.taxonomy_term.captcha_widgets.field_site_key' => 'field_config',
+    'field.field.taxonomy_term.captcha_widgets.field_captcha_type' => 'field_config',
+    'core.entity_view_display.taxonomy_term.captcha_widgets.default' => 'entity_view_display',
+    'core.entity_form_display.taxonomy_term.captcha_widgets.default' => 'entity_form_display',
+  ];
+
+  \Drupal::moduleHandler()->loadInclude('tide_core', 'inc', 'includes/helpers');
+  $config_location = [\Drupal::service('extension.list.module')->getPath('tide_webform') . '/config/optional'];
+  foreach ($configs as $config_name => $type) {
+    $config_read = _tide_read_config($config_name, $config_location, TRUE);
+    $storage = \Drupal::entityTypeManager()->getStorage($type);
+    $id = $storage->getIDFromConfigName($config_name, $storage->getEntityType()->getConfigPrefix());
+    if ($storage->load($id) == NULL) {
+      $config_entity = $storage->createFromStorageRecord($config_read);
+      $config_entity->save();
+    }
+  }
+}
diff --git a/tide_webform.module b/tide_webform.module
index ab61b20..4755aed 100644
--- a/tide_webform.module
+++ b/tide_webform.module
@@ -12,6 +12,7 @@ use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Field\BaseFieldDefinition;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Session\AccountInterface;
+use Drupal\taxonomy\Entity\Term;
 use Drupal\webform\Entity\Webform;
 use Drupal\webform\Entity\WebformSubmission;
 use Drupal\webform\WebformSubmissionForm;
@@ -438,3 +439,191 @@ function tide_webform_webform_element_default_properties_alter(array &$propertie
 function tide_webform_webform_update(EntityInterface $entity) {
   \Drupal::cache()->invalidate('webform_text_fields_default_maxlength');
 }
+
+/**
+ * Implements hook_webform_third_party_settings_form_alter().
+ */
+function tide_webform_webform_third_party_settings_form_alter(array &$form, FormStateInterface $form_state) {
+  $webform = $form_state->getFormObject()->getEntity();
+  $third_party_settings = $webform->getThirdPartySettings('tide_webform_captcha');
+  $user_input = $form_state->getUserInput();
+  $taxonomy_storage = \Drupal::entityTypeManager()->getStorage('taxonomy_term');
+  $captcha_type = NULL;
+  $allowed_values = [];
+  try {
+    $field_definition = \Drupal::entityTypeManager()->getStorage('field_storage_config')->load('taxonomy_term.field_captcha_type');
+    if ($field_definition) {
+      $allowed_values = $field_definition->getSetting('allowed_values');
+    }
+    else {
+      throw new \Exception('Field storage configuration not found for taxonomy_term.field_captcha_type');
+    }
+  }
+  catch (\Exception $e) {
+    \Drupal::messenger()->addWarning('Unable to load CAPTCHA type options. Please contact the site administrator.');
+    \Drupal::logger('tide_webform')
+      ->error('Error loading CAPTCHA type options for webform @webform: @message',
+             ['@webform' => $webform->id(), '@message' => $e->getMessage()]);
+    return;
+  }
+  if (isset($third_party_settings['captcha_type'])) {
+    $captcha_type = $third_party_settings['captcha_type'];
+  }
+  if (isset($user_input['third_party_settings']['tide_webform_captcha']['captcha_type'])) {
+    $captcha_type = $user_input['third_party_settings']['tide_webform_captcha']['captcha_type'];
+  }
+  $query = $taxonomy_storage->getQuery()
+    ->accessCheck(TRUE)
+    ->condition('vid', 'captcha_widgets')
+    ->condition('field_captcha_type', $captcha_type);
+  $tids = $query->execute();
+  $terms = $taxonomy_storage->loadMultiple($tids);
+  $options = array_map(function (Term $term) {
+    return $term->label() . ' (' . $term->id() . ')';
+  }, $terms);
+
+  $form['third_party_settings']['tide_webform_captcha'] = [
+    '#type' => 'fieldset',
+    '#title' => t('Tide webform CAPTCHA'),
+    '#open' => TRUE,
+  ];
+
+  $form['third_party_settings']['tide_webform_captcha']['enable_captcha'] = [
+    '#type' => 'checkbox',
+    '#default_value' => !empty($third_party_settings['enable_captcha']) ? $third_party_settings['enable_captcha'] : NULL,
+    '#title' => t('Enable captcha'),
+  ];
+
+  $form['third_party_settings']['tide_webform_captcha']['captcha_type'] = [
+    '#type' => 'select',
+    '#title' => t('Captcha type'),
+    '#options' => [
+      'all' => '-Select-',
+    ] + $allowed_values,
+    '#default_value' => !empty($third_party_settings['captcha_type']) ? $third_party_settings['captcha_type'] : NULL,
+    '#ajax' => [
+      'callback' => '_tide_webform_captcha_type_dropdown_callback',
+      'wrapper' => 'captcha-type-dropdown-container',
+    ],
+  ];
+  $score_threshold = NULL;
+  if (isset($third_party_settings['score_threshold']) && $third_party_settings['score_threshold'] === 0.0) {
+    $score_threshold = '0.0';
+  }
+  elseif (!empty($third_party_settings['score_threshold'])) {
+    $score_threshold = (string) $third_party_settings['score_threshold'];
+  }
+
+  $form['third_party_settings']['tide_webform_captcha']['score_threshold'] = [
+    '#type' => 'textfield',
+    '#title' => t('Score threshold (reCAPTCHA v3)'),
+    '#size' => 2,
+    '#maxlength' => 3,
+    '#number_type' => 'decimal',
+    '#element_validate' => ['_tide_webform_threshold_validate'],
+    '#states' => [
+      'visible' => [
+        ':input[name="third_party_settings[tide_webform_captcha][captcha_type]"]' => ['value' => 'google_recaptcha_v3'],
+      ],
+    ],
+    '#default_value' => $score_threshold,
+    '#description' => 'Enter a value between 0.0 and 1.0. Use only one decimal place (e.g., 0.0, 0.5, 1.0).',
+  ];
+
+  $form['third_party_settings']['tide_webform_captcha']['captcha_type_dropdown_container'] = [
+    '#type' => 'fieldset',
+    '#attributes' => ['id' => 'captcha-type-dropdown-container'],
+  ];
+
+  $form['third_party_settings']['tide_webform_captcha']['captcha_type_dropdown_container']['captcha_details'] = [
+    '#type' => \Drupal::moduleHandler()->moduleExists('select2') ? 'select2' : 'select',
+    '#title' => ('Site key'),
+    '#target_type' => 'taxonomy_term',
+    '#options' => $options,
+    '#tags' => TRUE,
+    '#select2' => [
+      'allowClear' => TRUE,
+      'dropdownAutoWidth' => FALSE,
+      'width' => '20%',
+      'closeOnSelect' => FALSE,
+    ],
+    '#default_value' => !empty($third_party_settings['captcha_details']['term_id']) ? $third_party_settings['captcha_details']['term_id'] : NULL,
+    '#selection_settings' => [
+      'target_bundles' => ['captcha_widgets'],
+    ],
+  ];
+
+  $form['#validate'][] = '_tide_webform_captcha_form_validate';
+}
+
+/**
+ * Captcha form validate.
+ */
+function _tide_webform_captcha_form_validate(&$form, FormStateInterface $form_state) {
+  $settings = &$form_state->getValue(['third_party_settings', 'tide_webform_captcha']);
+  $captcha_details = $settings['captcha_type_dropdown_container']['captcha_details'] ?? NULL;
+
+  if (is_array($captcha_details) && isset($captcha_details[0]['target_id'])) {
+    $term_id = $captcha_details[0]['target_id'];
+  }
+  elseif (is_numeric($captcha_details)) {
+    $term_id = $captcha_details;
+  }
+  else {
+    $term_id = NULL;
+  }
+
+  if ($term_id) {
+    $term = Term::load($term_id);
+    $settings['captcha_details'] = [
+      'site_key' => $term->get('field_site_key')->value,
+      'term_id' => (int) $term_id,
+      'captcha_id' => _tide_webform_get_captcha_id($term),
+    ];
+  }
+  else {
+    $settings['captcha_details'] = NULL;
+  }
+
+  unset($settings['captcha_type_dropdown_container']);
+}
+
+/**
+ * Captcha options callback.
+ */
+function _tide_webform_captcha_type_dropdown_callback($form, FormStateInterface $form_state) {
+  return $form['third_party_settings']['tide_webform_captcha']['captcha_type_dropdown_container'];
+}
+
+/**
+ * Threshold element validation.
+ */
+function _tide_webform_threshold_validate($element, FormStateInterface $form_state) {
+  $number = $form_state->getUserInput()['third_party_settings']['tide_webform_captcha']['score_threshold'];
+  if ($number === 0 || $number === '' || $number === NULL) {
+    $form_state->setValue([
+      'third_party_settings',
+      'tide_webform_captcha',
+      'score_threshold',
+    ], NULL);
+    return;
+  }
+  if (preg_match('/^(0(\.[0-9])?|1(\.0)?)$/', (string) $number)) {
+    $form_state->setValue([
+      'third_party_settings',
+      'tide_webform_captcha',
+      'score_threshold',
+    ], (float) $number);
+  }
+  else {
+    $form_state->setError($element, t('Enter a value between 0.0 and 1.0. Use only one decimal place (e.g., 0.0, 0.5, 1.0).'));
+  }
+}
+
+/**
+ * Gets captcha id.
+ */
+function _tide_webform_get_captcha_id(Term $term) {
+  $uri = $term->toLink()->getUrl()->toString();
+  return pathinfo(rtrim($uri, '/'), PATHINFO_BASENAME);
+}