diff --git a/app/controllers/api/v1/accounts/portals_controller.rb b/app/controllers/api/v1/accounts/portals_controller.rb
index b12f89c0a..8800d09ff 100644
--- a/app/controllers/api/v1/accounts/portals_controller.rb
+++ b/app/controllers/api/v1/accounts/portals_controller.rb
@@ -79,7 +79,8 @@ class Api::V1::Accounts::PortalsController < Api::V1::Accounts::BaseController
   def portal_params
     params.require(:portal).permit(
       :id, :color, :custom_domain, :header_text, :homepage_link,
-      :name, :page_title, :slug, :archived, { config: [:default_locale, :show_author, { allowed_locales: [] }] }
+      :name, :page_title, :slug, :archived, :custom_head_html, :custom_body_html,
+      { config: [:default_locale, :show_author, { allowed_locales: [] }] }
     )
   end
 
diff --git a/app/javascript/dashboard/components-next/HelpCenter/Pages/PortalSettingsPage/PortalBaseSettings.vue b/app/javascript/dashboard/components-next/HelpCenter/Pages/PortalSettingsPage/PortalBaseSettings.vue
index 3258162dc..c39523882 100644
--- a/app/javascript/dashboard/components-next/HelpCenter/Pages/PortalSettingsPage/PortalBaseSettings.vue
+++ b/app/javascript/dashboard/components-next/HelpCenter/Pages/PortalSettingsPage/PortalBaseSettings.vue
@@ -47,6 +47,8 @@ const state = reactive({
   logoUrl: '',
   avatarBlobId: '',
   showAuthor: true,
+  customHeadHtml: '',
+  customBodyHtml: '',
 });
 
 const originalState = reactive({ ...state });
@@ -120,6 +122,8 @@ watch(
         slug: newVal.slug,
         liveChatWidgetInboxId: newVal.inbox?.id || '',
         showAuthor: newVal.config?.show_author !== false,
+        customHeadHtml: newVal.custom_head_html || '',
+        customBodyHtml: newVal.custom_body_html || '',
       });
       if (newVal.logo) {
         const {
@@ -153,6 +157,8 @@ const handleUpdatePortal = () => {
     blob_id: state.avatarBlobId,
     inbox_id: state.liveChatWidgetInboxId,
     config: { show_author: state.showAuthor },
+    custom_head_html: state.customHeadHtml,
+    custom_body_html: state.customBodyHtml,
   };
   emit('updatePortal', portal);
 };
@@ -354,6 +360,54 @@ const handleAvatarDelete = () => {
           </span>
         </div>
       </div>
+      <div
+        class="grid items-start justify-between w-full gap-2 grid-cols-[200px,1fr]"
+      >
+        <label
+          class="text-sm font-medium whitespace-nowrap py-2.5 text-n-slate-12"
+        >
+          {{ t('HELP_CENTER.PORTAL_SETTINGS.FORM.CUSTOM_HEAD_HTML.LABEL') }}
+        </label>
+        <div class="flex flex-col gap-1">
+          <textarea
+            v-model="state.customHeadHtml"
+            :placeholder="
+              t('HELP_CENTER.PORTAL_SETTINGS.FORM.CUSTOM_HEAD_HTML.PLACEHOLDER')
+            "
+            rows="4"
+            class="w-full px-3 py-2 text-sm border rounded-lg resize-y border-n-weak bg-transparent dark:bg-transparent text-n-slate-12 placeholder:text-n-slate-9 focus:outline-none focus:ring-1 focus:ring-n-brand font-mono"
+          />
+          <span class="text-xs text-n-slate-11">
+            {{
+              t('HELP_CENTER.PORTAL_SETTINGS.FORM.CUSTOM_HEAD_HTML.HELP_TEXT')
+            }}
+          </span>
+        </div>
+      </div>
+      <div
+        class="grid items-start justify-between w-full gap-2 grid-cols-[200px,1fr]"
+      >
+        <label
+          class="text-sm font-medium whitespace-nowrap py-2.5 text-n-slate-12"
+        >
+          {{ t('HELP_CENTER.PORTAL_SETTINGS.FORM.CUSTOM_BODY_HTML.LABEL') }}
+        </label>
+        <div class="flex flex-col gap-1">
+          <textarea
+            v-model="state.customBodyHtml"
+            :placeholder="
+              t('HELP_CENTER.PORTAL_SETTINGS.FORM.CUSTOM_BODY_HTML.PLACEHOLDER')
+            "
+            rows="4"
+            class="w-full px-3 py-2 text-sm border rounded-lg resize-y border-n-weak bg-transparent dark:bg-transparent text-n-slate-12 placeholder:text-n-slate-9 focus:outline-none focus:ring-1 focus:ring-n-brand font-mono"
+          />
+          <span class="text-xs text-n-slate-11">
+            {{
+              t('HELP_CENTER.PORTAL_SETTINGS.FORM.CUSTOM_BODY_HTML.HELP_TEXT')
+            }}
+          </span>
+        </div>
+      </div>
       <div class="flex justify-end w-full gap-2">
         <Button
           :label="t('HELP_CENTER.PORTAL_SETTINGS.FORM.SAVE_CHANGES')"
diff --git a/app/javascript/dashboard/i18n/locale/en/helpCenter.json b/app/javascript/dashboard/i18n/locale/en/helpCenter.json
index 983620b3f..41d95990f 100644
--- a/app/javascript/dashboard/i18n/locale/en/helpCenter.json
+++ b/app/javascript/dashboard/i18n/locale/en/helpCenter.json
@@ -751,6 +751,16 @@
           "LABEL": "Show article authors",
           "HELP_TEXT": "Display author information on category pages"
         },
+        "CUSTOM_HEAD_HTML": {
+          "LABEL": "Custom head HTML",
+          "PLACEHOLDER": "Add custom HTML to the <head> section (e.g., meta tags, analytics, custom CSS)",
+          "HELP_TEXT": "This code will be injected into the <head> of your portal pages"
+        },
+        "CUSTOM_BODY_HTML": {
+          "LABEL": "Custom body HTML",
+          "PLACEHOLDER": "Add custom HTML before </body> (e.g., scripts, tracking pixels, widgets)",
+          "HELP_TEXT": "This code will be injected before the closing </body> tag of your portal pages"
+        },
         "SAVE_CHANGES": "Save changes"
       },
       "CONFIGURATION_FORM": {
diff --git a/app/javascript/dashboard/i18n/locale/pt_BR/helpCenter.json b/app/javascript/dashboard/i18n/locale/pt_BR/helpCenter.json
index cdba5e62d..879bcae2b 100644
--- a/app/javascript/dashboard/i18n/locale/pt_BR/helpCenter.json
+++ b/app/javascript/dashboard/i18n/locale/pt_BR/helpCenter.json
@@ -751,6 +751,16 @@
           "LABEL": "Mostrar autores dos artigos",
           "HELP_TEXT": "Exibir informações de autoria nas páginas de categorias"
         },
+        "CUSTOM_HEAD_HTML": {
+          "LABEL": "HTML personalizado no head",
+          "PLACEHOLDER": "Adicione HTML personalizado na seção <head> (ex: meta tags, analytics, CSS personalizado)",
+          "HELP_TEXT": "Este código será injetado no <head> das páginas do seu portal"
+        },
+        "CUSTOM_BODY_HTML": {
+          "LABEL": "HTML personalizado no body",
+          "PLACEHOLDER": "Adicione HTML personalizado antes do </body> (ex: scripts, pixels de rastreamento, widgets)",
+          "HELP_TEXT": "Este código será injetado antes da tag de fechamento </body> das páginas do seu portal"
+        },
         "SAVE_CHANGES": "Salvar Alterações"
       },
       "CONFIGURATION_FORM": {
diff --git a/app/models/portal.rb b/app/models/portal.rb
index 143c880ac..8f3bc655c 100644
--- a/app/models/portal.rb
+++ b/app/models/portal.rb
@@ -6,7 +6,9 @@
 #  archived              :boolean          default(FALSE)
 #  color                 :string
 #  config                :jsonb
+#  custom_body_html      :text
 #  custom_domain         :string
+#  custom_head_html      :text
 #  header_text           :text
 #  homepage_link         :string
 #  name                  :string           not null
@@ -40,6 +42,8 @@ class Portal < ApplicationRecord
   validates :name, presence: true
   validates :slug, presence: true, uniqueness: true
   validates :custom_domain, uniqueness: true, allow_nil: true
+  validates :custom_head_html, length: { maximum: 15_000 }
+  validates :custom_body_html, length: { maximum: 15_000 }
   validate :config_json_format
 
   scope :active, -> { where(archived: false) }
diff --git a/app/views/api/v1/accounts/portals/_portal.json.jbuilder b/app/views/api/v1/accounts/portals/_portal.json.jbuilder
index 4a580e2ca..7628c834c 100644
--- a/app/views/api/v1/accounts/portals/_portal.json.jbuilder
+++ b/app/views/api/v1/accounts/portals/_portal.json.jbuilder
@@ -8,6 +8,8 @@ json.page_title portal.page_title
 json.slug portal.slug
 json.archived portal.archived
 json.account_id portal.account_id
+json.custom_head_html portal.custom_head_html
+json.custom_body_html portal.custom_body_html
 
 json.config do
   json.allowed_locales do
diff --git a/app/views/layouts/portal.html.erb b/app/views/layouts/portal.html.erb
index 72b086d4b..cb86c6743 100644
--- a/app/views/layouts/portal.html.erb
+++ b/app/views/layouts/portal.html.erb
@@ -57,6 +57,9 @@ By default, it renders:
         document.documentElement.classList.add('light')
       }
     </script>
+    <% if !@is_plain_layout_enabled && @portal.custom_head_html.present? %>
+      <%= @portal.custom_head_html.html_safe %>
+    <% end %>
   </head>
   <body>
     <div id="portal" class="antialiased">
@@ -157,4 +160,7 @@ By default, it renders:
   <% if @portal.channel_web_widget.present? && !@is_plain_layout_enabled %>
   <%= @portal.channel_web_widget.web_widget_script.html_safe %>
   <% end %>
+  <% if !@is_plain_layout_enabled && @portal.custom_body_html.present? %>
+    <%= @portal.custom_body_html.html_safe %>
+  <% end %>
 </html>
diff --git a/db/migrate/20260309131532_add_custom_html_to_portals.rb b/db/migrate/20260309131532_add_custom_html_to_portals.rb
new file mode 100644
index 000000000..d6cebad4f
--- /dev/null
+++ b/db/migrate/20260309131532_add_custom_html_to_portals.rb
@@ -0,0 +1,6 @@
+class AddCustomHtmlToPortals < ActiveRecord::Migration[7.1]
+  def change
+    add_column :portals, :custom_head_html, :text
+    add_column :portals, :custom_body_html, :text
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 0994c7b7d..08fb0b5e9 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2026_02_26_194714) do
+ActiveRecord::Schema[7.1].define(version: 2026_03_09_131532) do
   # These extensions should be enabled to support this database
   enable_extension "pg_stat_statements"
   enable_extension "pg_trgm"
@@ -1095,6 +1095,8 @@ ActiveRecord::Schema[7.1].define(version: 2026_02_26_194714) do
     t.boolean "archived", default: false
     t.bigint "channel_web_widget_id"
     t.jsonb "ssl_settings", default: {}, null: false
+    t.text "custom_head_html"
+    t.text "custom_body_html"
     t.index ["channel_web_widget_id"], name: "index_portals_on_channel_web_widget_id"
     t.index ["custom_domain"], name: "index_portals_on_custom_domain", unique: true
     t.index ["slug"], name: "index_portals_on_slug", unique: true