diff --git a/config/install/core.entity_form_display.taxonomy_term.sites.default.yml b/config/install/core.entity_form_display.taxonomy_term.sites.default.yml
index 8af48aab..503b2868 100644
--- a/config/install/core.entity_form_display.taxonomy_term.sites.default.yml
+++ b/config/install/core.entity_form_display.taxonomy_term.sites.default.yml
@@ -8,7 +8,9 @@ dependencies:
     - field.field.taxonomy_term.sites.field_bottom_corner_graphic
     - field.field.taxonomy_term.sites.field_print_friendly_logo
     - field.field.taxonomy_term.sites.field_prominence_ack_to_country
+    - field.field.taxonomy_term.sites.field_short_name
     - field.field.taxonomy_term.sites.field_show_table_of_contents
+    - field.field.taxonomy_term.sites.field_site_app_icon
     - field.field.taxonomy_term.sites.field_site_domains
     - field.field.taxonomy_term.sites.field_site_favicon
     - field.field.taxonomy_term.sites.field_site_feature_flags
@@ -47,7 +49,7 @@ third_party_settings:
       label: 'Table of contents'
       region: content
       parent_name: ''
-      weight: 18
+      weight: 19
       format_type: details
       format_settings:
         classes: ''
@@ -62,7 +64,7 @@ third_party_settings:
       label: 'Site theme values'
       region: content
       parent_name: ''
-      weight: 19
+      weight: 20
       format_type: details
       format_settings:
         classes: ''
@@ -77,7 +79,7 @@ third_party_settings:
       label: 'Site feature flag values'
       region: content
       parent_name: ''
-      weight: 20
+      weight: 21
       format_type: details
       format_settings:
         classes: ''
@@ -92,7 +94,7 @@ third_party_settings:
       label: 'Site favicon value'
       region: content
       parent_name: ''
-      weight: 21
+      weight: 22
       format_type: details
       format_settings:
         classes: ''
@@ -108,7 +110,7 @@ third_party_settings:
       label: 'Site header corner graphics'
       region: content
       parent_name: ''
-      weight: 22
+      weight: 24
       format_type: details
       format_settings:
         classes: ''
@@ -117,6 +119,22 @@ third_party_settings:
         open: false
         required_fields: true
         effect: none
+    group_site_app_icon:
+      children:
+        - field_site_app_icon
+      label: 'Site app icon'
+      region: content
+      parent_name: ''
+      weight: 23
+      format_type: details
+      format_settings:
+        classes: ''
+        show_empty_fields: false
+        id: tide-site-app-icon
+        label_as_html: false
+        open: false
+        description: ''
+        required_fields: true
 id: taxonomy_term.sites.default
 targetEntityType: taxonomy_term
 bundle: sites
@@ -124,7 +142,7 @@ mode: default
 content:
   field_acknowledgement_to_country:
     type: string_textarea
-    weight: 12
+    weight: 13
     region: content
     settings:
       rows: 5
@@ -155,12 +173,20 @@ content:
     third_party_settings: {  }
   field_prominence_ack_to_country:
     type: string_textarea
-    weight: 13
+    weight: 14
     region: content
     settings:
       rows: 5
       placeholder: ''
     third_party_settings: {  }
+  field_short_name:
+    type: string_textfield
+    weight: 26
+    region: content
+    settings:
+      size: 60
+      placeholder: ''
+    third_party_settings: {  }
   field_show_table_of_contents:
     type: boolean_checkbox
     weight: 17
@@ -168,6 +194,14 @@ content:
     settings:
       display_label: true
     third_party_settings: {  }
+  field_site_app_icon:
+    type: image_image
+    weight: 25
+    region: content
+    settings:
+      progress_indicator: throbber
+      preview_image_style: thumbnail
+    third_party_settings: {  }
   field_site_domains:
     type: string_textarea
     weight: 4
@@ -266,7 +300,7 @@ content:
     third_party_settings: {  }
   field_site_og_image:
     type: entity_browser_entity_reference
-    weight: 14
+    weight: 15
     region: content
     settings:
       entity_browser: tide_image_browser
@@ -281,7 +315,7 @@ content:
     third_party_settings: {  }
   field_site_show_exit_site:
     type: boolean_checkbox
-    weight: 11
+    weight: 12
     region: content
     settings:
       display_label: true
@@ -296,7 +330,7 @@ content:
     third_party_settings: {  }
   field_site_social_links:
     type: link_default
-    weight: 16
+    weight: 17
     region: content
     settings:
       placeholder_url: 'https://example.com/Social'
@@ -323,7 +357,7 @@ content:
     third_party_settings: {  }
   field_site_twitter_image:
     type: entity_browser_entity_reference
-    weight: 15
+    weight: 16
     region: content
     settings:
       entity_browser: tide_image_browser
@@ -362,7 +396,7 @@ content:
     third_party_settings: {  }
   status:
     type: boolean_checkbox
-    weight: 17
+    weight: 18
     region: content
     settings:
       display_label: true
diff --git a/config/install/core.entity_view_display.taxonomy_term.sites.default.yml b/config/install/core.entity_view_display.taxonomy_term.sites.default.yml
index 98416ecb..58587f0c 100644
--- a/config/install/core.entity_view_display.taxonomy_term.sites.default.yml
+++ b/config/install/core.entity_view_display.taxonomy_term.sites.default.yml
@@ -6,7 +6,9 @@ dependencies:
     - field.field.taxonomy_term.sites.field_additional_comment
     - field.field.taxonomy_term.sites.field_print_friendly_logo
     - field.field.taxonomy_term.sites.field_prominence_ack_to_country
+    - field.field.taxonomy_term.sites.field_short_name
     - field.field.taxonomy_term.sites.field_show_table_of_contents
+    - field.field.taxonomy_term.sites.field_site_app_icon
     - field.field.taxonomy_term.sites.field_site_domains
     - field.field.taxonomy_term.sites.field_site_footer_logos
     - field.field.taxonomy_term.sites.field_site_footer_menu
@@ -53,6 +55,14 @@ content:
     third_party_settings: {  }
     weight: 12
     region: content
+  field_short_name:
+    type: string
+    label: above
+    settings:
+      link_to_entity: false
+    third_party_settings: {  }
+    weight: 18
+    region: content
   field_show_table_of_contents:
     type: boolean
     label: above
@@ -63,6 +73,21 @@ content:
     third_party_settings: {  }
     weight: 15
     region: content
+  field_site_app_icon:
+    type: image
+    label: above
+    settings:
+      image_link: ''
+      image_style: ''
+      image_loading:
+        attribute: lazy
+      svg_attributes:
+        width: null
+        height: null
+      svg_render_as_image: true
+    third_party_settings: {  }
+    weight: 17
+    region: content
   field_site_domains:
     type: basic_string
     label: above
diff --git a/config/install/field.field.taxonomy_term.sites.field_short_name.yml b/config/install/field.field.taxonomy_term.sites.field_short_name.yml
new file mode 100644
index 00000000..f42996b7
--- /dev/null
+++ b/config/install/field.field.taxonomy_term.sites.field_short_name.yml
@@ -0,0 +1,19 @@
+uuid: 02a974ba-fe98-4e96-918e-3509d82204c2
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.taxonomy_term.field_short_name
+    - taxonomy.vocabulary.sites
+id: taxonomy_term.sites.field_short_name
+field_name: field_short_name
+entity_type: taxonomy_term
+bundle: sites
+label: 'Short name'
+description: ''
+required: false
+translatable: false
+default_value: {  }
+default_value_callback: ''
+settings: {  }
+field_type: string
diff --git a/config/install/field.field.taxonomy_term.sites.field_site_app_icon.yml b/config/install/field.field.taxonomy_term.sites.field_site_app_icon.yml
new file mode 100644
index 00000000..a716618e
--- /dev/null
+++ b/config/install/field.field.taxonomy_term.sites.field_site_app_icon.yml
@@ -0,0 +1,38 @@
+uuid: e662f8a0-1655-49a0-80b6-b568be653dd1
+langcode: en
+status: true
+dependencies:
+  config:
+    - field.storage.taxonomy_term.field_site_app_icon
+    - taxonomy.vocabulary.sites
+  module:
+    - image
+id: taxonomy_term.sites.field_site_app_icon
+field_name: field_site_app_icon
+entity_type: taxonomy_term
+bundle: sites
+label: 'Site app icon'
+description: ''
+required: false
+translatable: false
+default_value: {  }
+default_value_callback: ''
+settings:
+  handler: 'default:file'
+  handler_settings: {  }
+  file_directory: '[date:custom:Y]-[date:custom:m]'
+  file_extensions: 'png gif jpg jpeg webp'
+  max_filesize: ''
+  max_resolution: 512x512
+  min_resolution: 512x512
+  alt_field: true
+  alt_field_required: true
+  title_field: false
+  title_field_required: false
+  default_image:
+    uuid: ''
+    alt: ''
+    title: ''
+    width: null
+    height: null
+field_type: image
diff --git a/config/install/field.field.taxonomy_term.sites.field_site_favicon.yml b/config/install/field.field.taxonomy_term.sites.field_site_favicon.yml
index e2066c8b..601f16d5 100644
--- a/config/install/field.field.taxonomy_term.sites.field_site_favicon.yml
+++ b/config/install/field.field.taxonomy_term.sites.field_site_favicon.yml
@@ -22,8 +22,8 @@ settings:
   file_directory: '[date:custom:Y]-[date:custom:m]'
   file_extensions: 'png gif jpg jpeg'
   max_filesize: ''
-  max_resolution: ''
-  min_resolution: ''
+  max_resolution: 128x128
+  min_resolution: 128x128
   alt_field: true
   alt_field_required: true
   title_field: false
diff --git a/config/install/field.storage.taxonomy_term.field_short_name.yml b/config/install/field.storage.taxonomy_term.field_short_name.yml
new file mode 100644
index 00000000..494fbc44
--- /dev/null
+++ b/config/install/field.storage.taxonomy_term.field_short_name.yml
@@ -0,0 +1,21 @@
+uuid: 58e77572-512b-4cfd-b9f7-375e8db17bad
+langcode: en
+status: true
+dependencies:
+  module:
+    - taxonomy
+id: taxonomy_term.field_short_name
+field_name: field_short_name
+entity_type: taxonomy_term
+type: string
+settings:
+  max_length: 12
+  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/install/field.storage.taxonomy_term.field_site_app_icon.yml b/config/install/field.storage.taxonomy_term.field_site_app_icon.yml
new file mode 100644
index 00000000..220ec3d6
--- /dev/null
+++ b/config/install/field.storage.taxonomy_term.field_site_app_icon.yml
@@ -0,0 +1,30 @@
+uuid: 2ab06add-41cb-4b33-8c68-91a484e76c57
+langcode: en
+status: true
+dependencies:
+  module:
+    - file
+    - image
+    - taxonomy
+id: taxonomy_term.field_site_app_icon
+field_name: field_site_app_icon
+entity_type: taxonomy_term
+type: image
+settings:
+  target_type: file
+  display_field: false
+  display_default: false
+  uri_scheme: public
+  default_image:
+    uuid: ''
+    alt: ''
+    title: ''
+    width: null
+    height: null
+module: image
+locked: false
+cardinality: 1
+translatable: true
+indexes: {  }
+persist_with_no_fields: false
+custom_storage: false
diff --git a/config/optional/jsonapi_extras.jsonapi_resource_config.taxonomy_term--sites.yml b/config/optional/jsonapi_extras.jsonapi_resource_config.taxonomy_term--sites.yml
index ac877a3b..b72806cf 100644
--- a/config/optional/jsonapi_extras.jsonapi_resource_config.taxonomy_term--sites.yml
+++ b/config/optional/jsonapi_extras.jsonapi_resource_config.taxonomy_term--sites.yml
@@ -116,3 +116,15 @@ resourceFields:
     enhancer:
       id: ''
     disabled: false
+  field_site_app_icon:
+    disabled: false
+    fieldName: field_site_app_icon
+    publicName: field_site_app_icon
+    enhancer:
+      id: ''
+  field_short_name:
+    disabled: false
+    fieldName: field_short_name
+    publicName: field_short_name
+    enhancer:
+      id: ''
diff --git a/modules/tide_site_theming/tide_site_theming.install b/modules/tide_site_theming/tide_site_theming.install
index 61fedd06..1e8641c4 100644
--- a/modules/tide_site_theming/tide_site_theming.install
+++ b/modules/tide_site_theming/tide_site_theming.install
@@ -5,6 +5,7 @@
  * Install file.
  */
 
+use Drupal\Component\Utility\NestedArray;
 use Drupal\tide_site_theming\TideSiteThemingOperation;
 
 /**
@@ -215,3 +216,79 @@ function tide_site_theming_update_8001() {
   }
   $config->save();
 }
+
+/**
+ * Add site app icon  and short name fields.
+ */
+function tide_site_theming_update_10001() {
+  $configs = [
+    'field.storage.taxonomy_term.field_short_name' => 'field_storage_config',
+    'field.storage.taxonomy_term.field_site_app_icon' => 'field_storage_config',
+    'field.field.taxonomy_term.sites.field_short_name' => 'field_config',
+    'field.field.taxonomy_term.sites.field_site_app_icon' => 'field_config',
+  ];
+  \Drupal::moduleHandler()->loadInclude('tide_core', 'inc', 'includes/helpers');
+  $config_location = [\Drupal::service('extension.list.module')->getPath('tide_site') . '/config/install'];
+  // Check if field already exported to config/sync.
+  foreach ($configs as $config => $type) {
+    $config_read = _tide_read_config($config, $config_location, TRUE);
+    $storage = \Drupal::entityTypeManager()->getStorage($type);
+    $id = $storage->getIDFromConfigName($config, $storage->getEntityType()->getConfigPrefix());
+    if ($storage->load($id) == NULL) {
+      $config_entity = $storage->createFromStorageRecord($config_read);
+      $config_entity->save();
+    }
+  }
+
+  $form_configs = [
+    'core.entity_form_display.taxonomy_term.sites.default',
+    'core.entity_view_display.taxonomy_term.sites.default',
+    'field.field.taxonomy_term.sites.field_site_favicon',
+  ];
+  foreach ($form_configs as $form_config) {
+    $rewrite = _tide_read_config($form_config, $config_location, FALSE);
+    $display_config_entity = \Drupal::configFactory()->getEditable($form_config);
+    $original_config = $display_config_entity->getRawData();
+    $rewritten_config = NestedArray::mergeDeep($original_config, $rewrite);
+    if ($rewritten_config['dependencies']) {
+      $dependencies = $rewritten_config['dependencies'];
+      foreach ($dependencies as $type => $items) {
+        $uniqueItems = array_unique($items);
+        sort($uniqueItems);
+        $dependencies[$type] = $uniqueItems;
+      }
+      $rewritten_config['dependencies'] = $dependencies;
+    }
+    $display_config_entity->setData($rewritten_config);
+    $display_config_entity->save();
+  }
+}
+
+/**
+ * Add new fields to json:api.
+ */
+function tide_site_theming_update_10002() {
+  \Drupal::moduleHandler()->loadInclude('tide_core', 'inc', 'includes/helpers');
+  $config_location = [\Drupal::service('extension.list.module')->getPath('tide_site') . '/config/optional'];
+
+  $form_configs = [
+    'jsonapi_extras.jsonapi_resource_config.taxonomy_term--sites',
+  ];
+  foreach ($form_configs as $form_config) {
+    $rewrite = _tide_read_config($form_config, $config_location, FALSE);
+    $display_config_entity = \Drupal::configFactory()->getEditable($form_config);
+    $original_config = $display_config_entity->getRawData();
+    $rewritten_config = NestedArray::mergeDeep($original_config, $rewrite);
+    if ($rewritten_config['dependencies']) {
+      $dependencies = $rewritten_config['dependencies'];
+      foreach ($dependencies as $type => $items) {
+        $uniqueItems = array_unique($items);
+        sort($uniqueItems);
+        $dependencies[$type] = $uniqueItems;
+      }
+      $rewritten_config['dependencies'] = $dependencies;
+    }
+    $display_config_entity->setData($rewritten_config);
+    $display_config_entity->save();
+  }
+}