diff --git a/_templates/layout.html b/_templates/layout.html
new file mode 100644
index 000000000..84503df34
--- /dev/null
+++ b/_templates/layout.html
@@ -0,0 +1,14 @@
+{% extends "!layout.html" -%}
+{% block linktags -%}
+  {% if godot_inject_language_links -%}
+  {% for alternate_lang in godot_docs_supported_languages -%}
+  {# Convert to ISO 639-1 format, e.g. zh_CN -> zh-cn -#}
+  {% set alternate_lang_href = alternate_lang.lower().replace("_", "-") -%}
+  <link rel="alternate" hreflang="{{ alternate_lang_href }}" 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/community/contributing/documentation_guidelines.rst b/community/contributing/documentation_guidelines.rst
index 781155bca..41ce00070 100644
--- a/community/contributing/documentation_guidelines.rst
+++ b/community/contributing/documentation_guidelines.rst
@@ -95,8 +95,12 @@ You can help to translate the official Godot documentation on our `Hosted Weblat
     :alt: Translation state
     :align: center
     :target: https://hosted.weblate.org/engage/godot-engine/?utm_source=widget
+    :width: 287
+    :height: 66
 
-There also is the official `Godot I18N repository <https://github.com/godotengine/godot-docs-l10n>`_. where you can see when the data was last synced.
+There also is the official
+`Godot i18n repository <https://github.com/godotengine/godot-docs-l10n>`_
+where you can see when the data was last synchronized.
 
 License
 -------
diff --git a/conf.py b/conf.py
index 714d782f4..721d9b33a 100644
--- a/conf.py
+++ b/conf.py
@@ -38,7 +38,32 @@ version = os.getenv("READTHEDOCS_VERSION", "3.0")
 # The full version, including alpha/beta/rc tags
 release = version
 
-language = "en"
+# Language / i18n
+
+supported_languages = {
+    "en": "Godot Engine (%s) documentation in English",
+    "de": "Godot Engine (%s) Dokumentation auf Deutsch",
+    "es": "Documentación de Godot Engine (%s) en español",
+    "fr": "Documentation de Godot Engine (%s) en français",
+    "fi": "Godot Engine (%s) dokumentaatio suomeksi",
+    "it": "Godot Engine (%s) documentazione in italiano",
+    "ja": "Godot Engine (%s)の日本語のドキュメント",
+    "ko": "Godot Engine (%s) 문서 (한국어)",
+    "pl": "Dokumentacja Godot Engine (%s) w języku polskim",
+    "pt_BR": "Documentação da Godot Engine (%s) em Português Brasileiro",
+    "ru": "Документация Godot Engine (%s) на русском языке",
+    "uk": "Документація до Godot Engine (%s) українською мовою",
+    "zh_CN": "Godot Engine (%s) 简体中文文档",
+}
+
+language = os.getenv("READTHEDOCS_LANGUAGE", "en")
+if not language in supported_languages.keys():
+    print("Unknown language: " + language)
+    print("Supported languages: " + ", ".join(supported_languages.keys()))
+    print(
+        "The configured language is either wrong, or it should be added to supported_languages in conf.py. Falling back to 'en'."
+    )
+    language = "en"
 
 exclude_patterns = ["_build"]
 
@@ -78,6 +103,8 @@ html_theme_options = {
     # 'navigation_depth': 4,  # Depth of the headers shown in the navigation bar
 }
 
+html_title = supported_languages[language] % version
+
 # VCS options: https://docs.readthedocs.io/en/latest/vcs.html#github
 html_context = {
     "display_github": True,  # Integrate GitHub
@@ -85,6 +112,12 @@ 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": list(supported_languages.keys()),
+    "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"
@@ -123,6 +156,3 @@ linkcheck_timeout = 10
 
 locale_dirs = ["../sphinx/po/"]
 gettext_compact = False
-# Exclude class reference when marked with tag i18n.
-if tags.has("i18n"):
-    exclude_patterns = ["classes"]
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