diff --git a/composer.json b/composer.json
index e0df5e9c7..4ce2243f7 100644
--- a/composer.json
+++ b/composer.json
@@ -82,7 +82,8 @@
                 "[#UHF-7008] Core localization file download URL is wrong (https://www.drupal.org/project/drupal/issues/3022876)": "https://git.drupalcode.org/project/drupal/-/commit/40a96136b2dfe4322338508dffa636f6cb407900.patch",
                 "[#UHF-7008] Add multilingual support for caching basefield definitions (https://www.drupal.org/project/drupal/issues/3114824)": "https://www.drupal.org/files/issues/2020-02-20/3114824_2.patch",
                 "[#UHF-7008] Admin toolbar and contextual links should always be rendered in the admin language (https://www.drupal.org/project/drupal/issues/2313309)": "https://www.drupal.org/files/issues/2023-12-19/2313309-179.patch",
-                "[#UHF-9388] Process translation config files for custom modules (https://www.drupal.org/i/2845437)": "https://www.drupal.org/files/issues/2023-10-16/2845437-61.patch"
+                "[#UHF-9388] Process translation config files for custom modules (https://www.drupal.org/i/2845437)": "https://www.drupal.org/files/issues/2023-10-16/2845437-61.patch",
+                "[#UHF-9690] Allow updating lists when switching from allowed values to allowed values function (https://www.drupal.org/i/2873353)": "https://www.drupal.org/files/issues/2021-05-18/allow-allowed-values-function-update-D9-2873353_1.patch"
             },
             "drupal/default_content": {
                 "https://www.drupal.org/project/default_content/issues/2640734#comment-14638943": "https://raw.githubusercontent.com/City-of-Helsinki/drupal-helfi-platform-config/main/patches/default_content_2.0.0-alpha2-2640734_manual_imports-e164a354.patch"
diff --git a/modules/hdbt_admin_tools/config/schema/formatted_text_character_counter.schema.yml b/modules/hdbt_admin_tools/config/schema/formatted_text_character_counter.schema.yml
new file mode 100644
index 000000000..401ea56a9
--- /dev/null
+++ b/modules/hdbt_admin_tools/config/schema/formatted_text_character_counter.schema.yml
@@ -0,0 +1,16 @@
+field.widget.settings.formatted_text_character_counter:
+  type: mapping
+  label: 'Character counter formatted text widget display format settings'
+  mapping:
+    counter_step:
+      type: integer
+      label: 'Counter step'
+    counter_total:
+      type: integer
+      label: 'Counter total'
+    rows:
+      type: integer
+      label: 'Rows'
+    placeholder:
+      type: label
+      label: 'Placeholder'
diff --git a/modules/hdbt_admin_tools/config/schema/textarea_character_counter.schema.yml b/modules/hdbt_admin_tools/config/schema/textarea_character_counter.schema.yml
new file mode 100644
index 000000000..6ea158b76
--- /dev/null
+++ b/modules/hdbt_admin_tools/config/schema/textarea_character_counter.schema.yml
@@ -0,0 +1,16 @@
+field.widget.settings.textarea_character_counter:
+  type: mapping
+  label: 'Character counter text area widget display format settings'
+  mapping:
+    counter_step:
+      type: integer
+      label: 'Counter step'
+    counter_total:
+      type: integer
+      label: 'Counter total'
+    rows:
+      type: integer
+      label: 'Rows'
+    placeholder:
+      type: label
+      label: 'Placeholder'
diff --git a/modules/hdbt_admin_tools/config/schema/textfield_character_counter.schema.yml b/modules/hdbt_admin_tools/config/schema/textfield_character_counter.schema.yml
new file mode 100644
index 000000000..5b736d764
--- /dev/null
+++ b/modules/hdbt_admin_tools/config/schema/textfield_character_counter.schema.yml
@@ -0,0 +1,16 @@
+field.widget.settings.textfield_character_counter:
+  type: mapping
+  label: 'Character counter textfield widget display format settings'
+  mapping:
+    counter_step:
+      type: integer
+      label: 'Counter step'
+    counter_total:
+      type: integer
+      label: 'Counter total'
+    size:
+      type: integer
+      label: 'Size of textfield'
+    placeholder:
+      type: label
+      label: 'Placeholder'
diff --git a/modules/hdbt_admin_tools/hdbt_admin_tools.module b/modules/hdbt_admin_tools/hdbt_admin_tools.module
index 3102305e7..fc822c829 100644
--- a/modules/hdbt_admin_tools/hdbt_admin_tools.module
+++ b/modules/hdbt_admin_tools/hdbt_admin_tools.module
@@ -1066,3 +1066,26 @@ function hdbt_admin_tools_entity_base_field_info_alter(&$fields) {
     $fields['langcode']->setDescription($translation);
   }
 }
+
+/**
+ * Implements hook_theme_suggestions_HOOK_alter().
+ */
+function hdbt_admin_tools_theme_suggestions_form_element_alter(array &$suggestions, array $variables): void {
+  // Add character count suggestions to configured form elements.
+  if (isset($variables['element']['#character_counter'])) {
+    $suggestions[] = $variables['theme_hook_original'] . '__character_count';
+  }
+}
+
+/**
+ * Implements hook_preprocess_HOOK().
+ */
+function hdbt_admin_tools_preprocess_form_element(array &$variables): void {
+  if (!isset($variables['element']['#character_counter'])) {
+    return;
+  }
+  // Set character counter values to variables.
+  $variables['counter_step'] = $variables['element']['#counter_step'];
+  $variables['counter_total'] = $variables['element']['#counter_total'];
+  $variables['counter_input_tag'] = $variables['element']['#type'] === 'textarea' ? 'textarea' : 'input';
+}
diff --git a/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/CharacterCounterFieldWidgetTrait.php b/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/CharacterCounterFieldWidgetTrait.php
new file mode 100644
index 000000000..a222626f1
--- /dev/null
+++ b/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/CharacterCounterFieldWidgetTrait.php
@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\hdbt_admin_tools\Plugin\Field\FieldWidget;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Trait for handling character counter settings and form elements.
+ */
+trait CharacterCounterFieldWidgetTrait {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function defaultSettings(): array {
+    return [
+      'counter_step' => 160,
+      'counter_total' => 200,
+    ] + parent::defaultSettings();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsForm(array $form, FormStateInterface $form_state): array {
+    $element = parent::settingsForm($form, $form_state);
+    $element['counter_step'] = [
+      '#type' => 'number',
+      '#title' => $this->t('Suggestion text character count'),
+      '#default_value' => $this->getSetting('counter_step'),
+      '#required' => TRUE,
+    ];
+    $element['counter_total'] = [
+      '#type' => 'number',
+      '#title' => $this->t('Warning text character count'),
+      '#default_value' => $this->getSetting('counter_total'),
+      '#required' => TRUE,
+    ];
+    return $element;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsSummary(): array {
+    $summary = parent::settingsSummary();
+    $summary[] = $this->t('Suggestion text character count: @count', ['@count' => $this->getSetting('counter_step')]);
+    $summary[] = $this->t('Warning text character count: @count', ['@count' => $this->getSetting('counter_total')]);
+    return $summary;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state): array {
+    $element = parent::formElement($items, $delta, $element, $form, $form_state);
+    $element['value']['#character_counter'] = TRUE;
+    $element['value']['#counter_step'] = $this->getSetting('counter_step');
+    $element['value']['#counter_total'] = $this->getSetting('counter_total');
+    return $element;
+  }
+
+}
diff --git a/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/FormattedTextCharacterCounterWidget.php b/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/FormattedTextCharacterCounterWidget.php
new file mode 100644
index 000000000..30a37b78d
--- /dev/null
+++ b/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/FormattedTextCharacterCounterWidget.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\hdbt_admin_tools\Plugin\Field\FieldWidget;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\text\Plugin\Field\FieldWidget\TextareaWidget;
+
+/**
+ * Plugin implementation of the 'formatted_text_character_counter' widget.
+ *
+ * @FieldWidget(
+ *   id = "formatted_text_character_counter",
+ *   label = @Translation("Text area (formatted text, character counter)"),
+ *   field_types = {
+ *     "text_long",
+ *   }
+ * )
+ */
+class FormattedTextCharacterCounterWidget extends TextareaWidget {
+
+  use CharacterCounterFieldWidgetTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state): array {
+    $element = parent::formElement($items, $delta, $element, $form, $form_state);
+    $element['#character_counter'] = TRUE;
+    $element['#counter_step'] = $this->getSetting('counter_step');
+    $element['#counter_total'] = $this->getSetting('counter_total');
+    return $element;
+  }
+
+}
diff --git a/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/TextareaCharacterCounterWidget.php b/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/TextareaCharacterCounterWidget.php
new file mode 100644
index 000000000..fc015dea4
--- /dev/null
+++ b/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/TextareaCharacterCounterWidget.php
@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\hdbt_admin_tools\Plugin\Field\FieldWidget;
+
+use Drupal\Core\Field\Plugin\Field\FieldWidget\StringTextareaWidget;
+
+/**
+ * Plugin implementation of the 'textarea_character_counter' widget.
+ *
+ * @FieldWidget(
+ *   id = "textarea_character_counter",
+ *   label = @Translation("Text area (character counter)"),
+ *   field_types = {
+ *     "string_long",
+ *   }
+ * )
+ */
+class TextareaCharacterCounterWidget extends StringTextareaWidget {
+
+  use CharacterCounterFieldWidgetTrait;
+
+}
diff --git a/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/TextfieldCharacterCounterWidget.php b/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/TextfieldCharacterCounterWidget.php
new file mode 100644
index 000000000..fecba0667
--- /dev/null
+++ b/modules/hdbt_admin_tools/src/Plugin/Field/FieldWidget/TextfieldCharacterCounterWidget.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\hdbt_admin_tools\Plugin\Field\FieldWidget;
+
+use Drupal\Core\Field\Plugin\Field\FieldWidget\StringTextfieldWidget;
+
+/**
+ * Plugin implementation of the 'textarea_character_counter' widget.
+ *
+ * @FieldWidget(
+ *   id = "textfield_character_counter",
+ *   label = @Translation("Textfield (character counter)"),
+ *   field_types = {
+ *     "string"
+ *   }
+ * )
+ */
+class TextfieldCharacterCounterWidget extends StringTextfieldWidget {
+
+  use CharacterCounterFieldWidgetTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function defaultSettings(): array {
+    return [
+      'counter_step' => 0,
+      'counter_total' => 55,
+    ] + parent::defaultSettings();
+  }
+
+}
diff --git a/modules/hdbt_admin_tools/translations/fi.po b/modules/hdbt_admin_tools/translations/fi.po
index de1b8dd80..8ced6b156 100644
--- a/modules/hdbt_admin_tools/translations/fi.po
+++ b/modules/hdbt_admin_tools/translations/fi.po
@@ -129,3 +129,12 @@ msgstr "Hero-lohko on pakollinen jos Hero-lohko -valintaruutu on valittuna. Pois
 
 msgid "If you want to translate this page, do not change this value. You can translate this content from the 'Translate' -tab"
 msgstr "Jos haluat luoda tästä sivusta uuden käännöksen, älä vaihda tätä arvoa, vaan luo uusi käännös 'Käännä'-välilehdeltä"
+
+msgid "Text area (formatted text, character counter)"
+msgstr "Tekstialue (muotoiltu, merkkimäärälaskuri)"
+
+msgid "Text area (character counter)"
+msgstr "Tekstialue (merkkimäärälaskuri)"
+
+msgid "Textfield (character counter)"
+msgstr "Tekstikenttä (merkkimäärälaskuri)"
diff --git a/modules/helfi_node_page/config/install/core.entity_form_display.node.page.default.yml b/modules/helfi_node_page/config/install/core.entity_form_display.node.page.default.yml
index 98f08a707..75f9da539 100644
--- a/modules/helfi_node_page/config/install/core.entity_form_display.node.page.default.yml
+++ b/modules/helfi_node_page/config/install/core.entity_form_display.node.page.default.yml
@@ -76,10 +76,12 @@ content:
         duplicate: '0'
     third_party_settings: {  }
   field_lead_in:
-    type: string_textarea
+    type: textarea_character_counter
     weight: 13
     region: content
     settings:
+      counter_step: 160
+      counter_total: 200
       rows: 3
       placeholder: ''
     third_party_settings: {  }
@@ -200,10 +202,12 @@ content:
       display_label: true
     third_party_settings: {  }
   title:
-    type: string_textfield
+    type: textfield_character_counter
     weight: 1
     region: content
     settings:
+      counter_step: 0
+      counter_total: 55
       size: 60
       placeholder: ''
     third_party_settings: {  }
diff --git a/modules/helfi_node_page/helfi_node_page.install b/modules/helfi_node_page/helfi_node_page.install
index 1e39ba087..f580cf810 100644
--- a/modules/helfi_node_page/helfi_node_page.install
+++ b/modules/helfi_node_page/helfi_node_page.install
@@ -104,9 +104,9 @@ function helfi_node_page_update_9001() : void {
 }
 
 /**
- * Set node as unpublished on default.
+ * UHF-9690 Added character counter to title and lead in.
  */
-function helfi_node_page_update_9002() : void {
+function helfi_node_page_update_9003() : void {
   // Re-import configuration.
   \Drupal::service('helfi_platform_config.config_update_helper')
     ->update('helfi_node_page');
diff --git a/modules/helfi_paragraphs_hero/config/install/core.entity_form_display.paragraph.hero.default.yml b/modules/helfi_paragraphs_hero/config/install/core.entity_form_display.paragraph.hero.default.yml
index f30ec32fd..0dbc041ab 100644
--- a/modules/helfi_paragraphs_hero/config/install/core.entity_form_display.paragraph.hero.default.yml
+++ b/modules/helfi_paragraphs_hero/config/install/core.entity_form_display.paragraph.hero.default.yml
@@ -10,22 +10,27 @@ dependencies:
     - field.field.paragraph.hero.field_hero_title
     - paragraphs.paragraphs_type.hero
   module:
+    - allowed_formats
     - hdbt_admin_tools
     - media_library
-    - text
 id: paragraph.hero.default
 targetEntityType: paragraph
 bundle: hero
 mode: default
 content:
   field_hero_desc:
-    type: text_textarea
+    type: formatted_text_character_counter
     weight: 3
     region: content
     settings:
+      counter_step: 160
+      counter_total: 200
       rows: 5
       placeholder: ''
-    third_party_settings: {  }
+    third_party_settings:
+      allowed_formats:
+        hide_help: '0'
+        hide_guidelines: '0'
   field_hero_design:
     type: design_field_widget
     weight: 0
@@ -44,6 +49,8 @@ content:
     weight: 6
     region: content
     settings:
+      placeholder_url: ''
+      placeholder_title: ''
       linkit_profile: helfi
       linkit_auto_link_text: false
     third_party_settings: {  }
@@ -54,10 +61,12 @@ content:
     settings: {  }
     third_party_settings: {  }
   field_hero_title:
-    type: string_textfield
+    type: textfield_character_counter
     weight: 2
     region: content
     settings:
+      counter_step: 0
+      counter_total: 55
       size: 60
       placeholder: ''
     third_party_settings: {  }
diff --git a/modules/helfi_paragraphs_hero/helfi_paragraphs_hero.install b/modules/helfi_paragraphs_hero/helfi_paragraphs_hero.install
index 09ff14cb2..0b784e72c 100644
--- a/modules/helfi_paragraphs_hero/helfi_paragraphs_hero.install
+++ b/modules/helfi_paragraphs_hero/helfi_paragraphs_hero.install
@@ -34,3 +34,18 @@ function helfi_paragraphs_hero_update_9003(): void {
     // values with allowed_values_function.
   }
 }
+
+/**
+ * UHF-9690 Added character counter to hero title and hero description.
+ */
+function helfi_paragraphs_hero_update_9004() : void {
+  try {
+    \Drupal::service('helfi_platform_config.config_update_helper')
+      ->update('helfi_paragraphs_hero');
+  }
+  catch (FieldStorageDefinitionUpdateForbiddenException $exception) {
+    // We know the database values are different what we are trying
+    // to write there, but we are only replacing the
+    // values with allowed_values_function.
+  }
+}