diff --git a/frontend/index.html b/frontend/index.html
index e482ec272..45c5bd10e 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -13,7 +13,10 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>matrix-authentication-service</title>
+    <!-- :tchap: -->
+    <title>Tchap</title>
+    <link rel="icon" href="https://www.tchap.gouv.fr/vector-icons/favicon.e336df8.ico">
+    <!-- :tchap: -->
     <script type="application/javascript">
       window.APP_CONFIG = JSON.parse(
         '{"root": "/account/", "graphqlEndpoint": "/graphql"}',
diff --git a/tchap/resources/templates/app.html b/tchap/resources/templates/app.html
new file mode 100644
index 000000000..0220ef5ee
--- /dev/null
+++ b/tchap/resources/templates/app.html
@@ -0,0 +1,34 @@
+{#
+Copyright 2024, 2025 New Vector Ltd.
+Copyright 2023, 2024 The Matrix.org Foundation C.I.C.
+
+SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE files in the repository root for full details.
+-#}
+
+{# Must be kept in sync with frontend/index.html #}
+{% set _ = translator(lang) %}
+
+<!DOCTYPE html>
+<html lang="{{ lang }}">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>{{ _("app.name") }}</title>
+    <!-- :tchap: -->
+    <link rel="icon" href="https://www.tchap.gouv.fr/vector-icons/favicon.e336df8.ico">
+    <!-- :tchap: -->
+    {% set config = {
+      'graphqlEndpoint': app_config.graphqlEndpoint,
+      'root': app_config.root,
+    } -%}
+    <script>
+      window.APP_CONFIG = JSON.parse("{{ config | tojson | add_slashes | safe }}");
+    </script>
+    {{ include_asset('src/main.tsx') | indent(4) | safe }}
+  </head>
+
+  <body>
+    <div id="root"></div>
+  </body>
+</html>
diff --git a/tchap/resources/templates/base.html b/tchap/resources/templates/base.html
index bbfc5bb5f..306fdcb8f 100644
--- a/tchap/resources/templates/base.html
+++ b/tchap/resources/templates/base.html
@@ -28,6 +28,7 @@
     {{ include_asset('src/templates.css') | indent(4) | safe }}
 
     <!-- :tchap: -->
+    <link rel="icon" href="https://www.tchap.gouv.fr/vector-icons/favicon.e336df8.ico">
     {{ include_asset('tchap/css/tchap.css') | indent(4) | safe }}
     {{ include_asset('node_modules/@gouvfr-lasuite/integration/dist/css/homepage-full.css') | indent(4) | safe }}
     <script id="lasuite-gaufre-script" async defer src="https://integration.lasuite.numerique.gouv.fr/api/v1/gaufre.js"></script>
diff --git a/tchap/resources/translations/en.json b/tchap/resources/translations/en.json
index a1f79fc8b..0fa132f06 100644
--- a/tchap/resources/translations/en.json
+++ b/tchap/resources/translations/en.json
@@ -34,12 +34,12 @@
     }
   },
   "app": {
-    "human_name": "Matrix Authentication Service",
+    "human_name": "Tchap",
     "@human_name": {
       "context": "index.html:15:29-48, pages/index.html:15:29-48",
       "description": "Human readable name of the application"
     },
-    "name": "matrix-authentication-service",
+    "name": "Tchap",
     "@name": {
       "context": "app.html:17:14-27, base.html:25:31-44",
       "description": "Name of the application"
diff --git a/tchap/resources/translations/fr.json b/tchap/resources/translations/fr.json
index 806d8307a..962f02d84 100644
--- a/tchap/resources/translations/fr.json
+++ b/tchap/resources/translations/fr.json
@@ -11,8 +11,8 @@
     "submit": "Soumettre"
   },
   "app": {
-    "human_name": "Matrix Authentication Service",
-    "name": "matrix-authentication-service",
+    "human_name": "Tchap",
+    "name": "Tchap",
     "technical_description": "Document de découverte OpenID Connect : <a class=\"cpd-link\" data-kind=\"primary\" href=\"%(discovery_url)s\">%(discovery_url)s</a>"
   },
   "branding": {
