diff --git a/addons/website/models/website.py b/addons/website/models/website.py
index 8b01d038805..1327c6af2a6 100644
--- a/addons/website/models/website.py
+++ b/addons/website/models/website.py
@@ -1327,7 +1327,7 @@ class Website(models.Model):
             router = http.root.get_db_router(request.db).bind('')
             path = router.build(rule.endpoint, args)
             if lang != self.default_lang_id:
-                path = f'/{lang.url_code}{path}'
+                path = f'/{lang.url_code}{path if path != "/" else ""}'
         except (NotFound, AccessError, MissingError):
             # The build method returns a quoted URL so convert in this case for consistency.
             path = urls.url_quote_plus(request.httprequest.environ['REQUEST_URI'], safe='/')
diff --git a/addons/website/tests/test_base_url.py b/addons/website/tests/test_base_url.py
index 171dfc35c1d..40335dcb7b4 100644
--- a/addons/website/tests/test_base_url.py
+++ b/addons/website/tests/test_base_url.py
@@ -85,7 +85,7 @@ class TestBaseUrl(TestUrlCommon):
         self._assertCanonical('/?debug=1', self.website.get_base_url() + '/')
         self._assertCanonical('/a-page', self.website.get_base_url() + '/a-page')
         self._assertCanonical('/en_US', self.website.get_base_url() + '/')
-        self._assertCanonical('/fr_FR', self.website.get_base_url() + '/fr/')
+        self._assertCanonical('/fr_FR', self.website.get_base_url() + '/fr')
 
 
 @odoo.tests.tagged('-at_install', 'post_install')
diff --git a/addons/website/tests/test_lang_url.py b/addons/website/tests/test_lang_url.py
index 6ae29b49310..f655880fe99 100644
--- a/addons/website/tests/test_lang_url.py
+++ b/addons/website/tests/test_lang_url.py
@@ -24,7 +24,7 @@ class TestLangUrl(HttpCase):
 
     def test_01_url_lang(self):
         with MockRequest(self.env, website=self.website):
-            self.assertEqual(url_lang('', '[lang]'), '/[lang]/mockrequest/', "`[lang]` is used to be replaced in the url_return after installing a language, it should not be replaced or removed.")
+            self.assertEqual(url_lang('', '[lang]'), '/[lang]/mockrequest', "`[lang]` is used to be replaced in the url_return after installing a language, it should not be replaced or removed.")
 
     def test_02_url_redirect(self):
         url = '/fr_WHATEVER/contactus'
diff --git a/addons/website/tools.py b/addons/website/tools.py
index 3dbd0d7c582..87337c7e0b8 100644
--- a/addons/website/tools.py
+++ b/addons/website/tools.py
@@ -14,7 +14,7 @@ from odoo.tools.misc import DotDict, frozendict
 
 @contextlib.contextmanager
 def MockRequest(
-        env, *, path='/mockrequest/', routing=True, multilang=True,
+        env, *, path='/mockrequest', routing=True, multilang=True,
         context=frozendict(), cookies=frozendict(), country_code=None,
         website=None, remote_addr=HOST, environ_base=None,
         # website_sale
diff --git a/addons/website/views/website_templates.xml b/addons/website/views/website_templates.xml
index 20ce8c7c17a..db3e44e7e42 100644
--- a/addons/website/views/website_templates.xml
+++ b/addons/website/views/website_templates.xml
@@ -106,18 +106,18 @@
                 <t t-foreach="twitter_meta" t-as="t_meta">
         <meta t-att-name="t_meta" t-att-content="twitter_meta[t_meta]"/>
                 </t>
-
-                <t t-if="request and request.is_frontend_multilang and website">
-                    <t t-cache="website,canonical_params">
-                        <t t-set="alternate_languages" t-value="website._get_alternate_languages(canonical_params=canonical_params)"/>
-                        <t t-foreach="alternate_languages" t-as="lg">
-                            <link rel="alternate" t-att-hreflang="lg['hreflang']" t-att-href="lg['href']"/>
-                        </t>
-                    </t>
+            </t>
+        </t>
+        <!-- `alternate`/`canonical` mainly useful to crawlers/bots/SEO tools, which test the website as public user -->
+        <t t-if="request and request.is_frontend_multilang and website and website.is_public_user()">
+            <t t-cache="website,canonical_params">
+                <t t-set="alternate_languages" t-value="website._get_alternate_languages(canonical_params=canonical_params)"/>
+                <t t-foreach="alternate_languages" t-as="lg">
+        <link rel="alternate" t-att-hreflang="lg['hreflang']" t-att-href="lg['href']"/>
                 </t>
             </t>
         </t>
-        <link t-if="request and website" rel="canonical" t-att-href="website._get_canonical_url(canonical_params=canonical_params)"/>
+        <link t-if="request and website and website.is_public_user()" rel="canonical" t-att-href="website._get_canonical_url(canonical_params=canonical_params)"/>
         <link rel="preconnect" href="https://fonts.gstatic.com/" crossorigin=""/>
     </xpath>