diff --git a/_templates/layout.html b/_templates/layout.html
index 63b560283..a10061e6d 100644
--- a/_templates/layout.html
+++ b/_templates/layout.html
@@ -1,14 +1,12 @@
-{% extends "!layout.html" %}
-{% block linktags %}
-    <link rel="alternate" hreflang="en" href="https://docs.godotengine.org/en/" />
-    <link rel="alternate" hreflang="de" href="https://docs.godotengine.org/de/" />
-    <link rel="alternate" hreflang="es" href="https://docs.godotengine.org/es/" />
-    <link rel="alternate" hreflang="fr" href="https://docs.godotengine.org/fr/" />
-    <link rel="alternate" hreflang="ko" href="https://docs.godotengine.org/ko/" />
-    <link rel="alternate" hreflang="pl" href="https://docs.godotengine.org/pl/" />
-    <link rel="alternate" hreflang="pt-br" href="https://docs.godotengine.org/pt-br/" />
-    <link rel="alternate" hreflang="uk" href="https://docs.godotengine.org/uk/" />
-    <link rel="alternate" hreflang="zh-cn" href="https://docs.godotengine.org/zh-cn/" />
-    <link rel="alternate" hreflang="x-default" href="https://docs.godotengine.org/" />
-    {{ super() }}
-{% endblock %}
+{% extends "!layout.html" -%}
+{% block linktags -%}
+  {% if godot_inject_language_links -%}
+  {% for alternate_lang in godot_docs_supported_languages -%}
+  <link rel="alternate" hreflang="{{ alternate_lang }}" href="{{ godot_docs_basepath }}{{ alternate_lang }}/{{ godot_canonical_version }}/{{ pagename }}{{ godot_docs_suffix }}" />
+  {% endfor -%}
+  <link rel="alternate" hreflang="x-default" href="{{ godot_docs_basepath }}{{ godot_default_lang }}/{{ godot_canonical_version }}/{{ pagename }}{{ godot_docs_suffix }}" />
+  
+  <link rel="canonical" href="{{ godot_docs_basepath }}{{ lang_attr }}/{{ godot_canonical_version }}/{{ pagename }}{{ godot_docs_suffix }}" />
+  {% endif -%}
+  {{ super() }}
+{% endblock -%}
diff --git a/conf.py b/conf.py
index 0598ee49e..c78504fbd 100644
--- a/conf.py
+++ b/conf.py
@@ -49,7 +49,13 @@ if env_tags is not None:
         tags.add(tag.strip())  # noqa: F821
 
 # Language / i18n
+supported_languages = ['en', 'de', 'es', 'fr', 'fi', 'it', 'ja', 'ko', 'pl', 'pt-br', 'ru', 'uk', 'zh-cn']
 language = os.getenv("READTHEDOCS_LANGUAGE", "en")
+if not language in supported_languages:
+    print("Unknown language: " + language)
+    print("Supported languages: " + ", ".join(supported_languages))
+    print("This is an error or needs to be added to supported_languages in conf.py")
+
 is_i18n = tags.has("i18n")  # noqa: F821
 
 exclude_patterns = ["_build"]
@@ -94,6 +100,12 @@ html_context = {
     "github_repo": "godot-docs",  # Repo name
     "github_version": "master",  # Version
     "conf_py_path": "/",  # Path in the checkout to the docs root
+    "godot_inject_language_links": True,
+    "godot_docs_supported_languages": supported_languages,
+    "godot_docs_basepath": "https://docs.godotengine.org/",
+    "godot_docs_suffix": ".html",
+    "godot_default_lang": "en",
+    "godot_canonical_version": "stable",
 }
 
 html_logo = "img/docs_logo.png"
diff --git a/robots.txt b/robots.txt
index 015c50aad..06d70556d 100644
--- a/robots.txt
+++ b/robots.txt
@@ -1,7 +1,3 @@
 user-agent: *
-disallow: /*/3.2
-disallow: /*/3.1
-disallow: /*/3.0
-disallow: /*/2.1
 
 sitemap: https://docs.godotengine.org/sitemap.xml