diff --git a/material/templates/partials/content.html b/material/templates/partials/content.html
index ee069864d..0cb0a6bd5 100644
--- a/material/templates/partials/content.html
+++ b/material/templates/partials/content.html
@@ -3,7 +3,7 @@
 -#}
 {% include "partials/tags.html" %}
 {% include "partials/actions.html" %}
-{% if "\x3ch1" not in page.content %}
+{% if "\u003ch1" not in page.content %}
   <h1>{{ page.title | d(config.site_name, true)}}</h1>
 {% endif %}
 {{ page.content }}
diff --git a/material/templates/partials/icons.html b/material/templates/partials/icons.html
index 7d3aaded0..3dc3cdaf8 100644
--- a/material/templates/partials/icons.html
+++ b/material/templates/partials/icons.html
@@ -2,21 +2,23 @@
   This file was automatically generated - do not edit
 -#}
 {% if config.theme.icon.admonition %}
-  {% set _ = namespace(style = "\x3cstyle\x3e:root{") %}
+  {% set _ = namespace(style = "\u003cstyle\u003e:root{") %}
   {% for type, icon in config.theme.icon.admonition | items %}
-    {% import ".icons/" ~ icon ~ ".svg" as icon %}
-    {% set _.style = _.style ~
-      "--md-admonition-icon--" ~ type ~ ":" ~
-      "url('data:image/svg+xml;charset=utf-8," ~
-        icon | replace("\n", "") | urlencode ~
-      "');"
-    %}
+    {% if type and icon %}
+      {% import ".icons/" ~ icon ~ ".svg" as icon %}
+      {% set _.style = _.style ~
+        "--md-admonition-icon--" ~ type ~ ":" ~
+        "url('data:image/svg+xml;charset=utf-8," ~
+          icon | replace("\n", "") | urlencode ~
+        "');"
+      %}
+    {% endif %}
   {% endfor %}
-  {% set _.style = _.style ~ "}\x3c/style\x3e" %}
+  {% set _.style = _.style ~ "}\u003c/style\u003e" %}
   {{ _.style }}
 {% endif %}
 {% if config.theme.icon.annotation %}
-  {% set _ = namespace(style = "\x3cstyle\x3e:root{") %}
+  {% set _ = namespace(style = "\u003cstyle\u003e:root{") %}
   {% import ".icons/" ~ config.theme.icon.annotation ~ ".svg" as icon %}
   {% set _.style = _.style ~
     "--md-annotation-icon:" ~
@@ -24,25 +26,27 @@
       icon | replace("\n", "") | urlencode ~
     "');"
   %}
-  {% set _.style = _.style ~ "}\x3c/style\x3e" %}
+  {% set _.style = _.style ~ "}\u003c/style\u003e" %}
   {{ _.style }}
 {% endif %}
 {% if config.theme.icon.tag %}
-  {% set _ = namespace(style = "\x3cstyle\x3e:root{") %}
+  {% set _ = namespace(style = "\u003cstyle\u003e:root{") %}
   {% for type, icon in config.theme.icon.tag | items %}
-    {% import ".icons/" ~ icon ~ ".svg" as icon %}
-    {% if type != "default" %}
-      {% set modifier = ".md-tag--" ~ type %}
+    {% if type and icon %}
+      {% import ".icons/" ~ icon ~ ".svg" as icon %}
+      {% if type != "default" %}
+        {% set modifier = ".md-tag--" ~ type %}
+      {% endif %}
+      {% set _.style = _.style ~
+        ".md-tag" ~ modifier ~ "{" ~
+          "--md-tag-icon:" ~
+          "url('data:image/svg+xml;charset=utf-8," ~
+            icon | replace("\n", "") | urlencode ~
+          "');" ~
+        "}"
+      %}
     {% endif %}
-    {% set _.style = _.style ~
-      ".md-tag" ~ modifier ~ "{" ~
-        "--md-tag-icon:" ~
-        "url('data:image/svg+xml;charset=utf-8," ~
-          icon | replace("\n", "") | urlencode ~
-        "');" ~
-      "}"
-    %}
   {% endfor %}
-  {% set _.style = _.style ~ "}\x3c/style\x3e" %}
+  {% set _.style = _.style ~ "}\u003c/style\u003e" %}
   {{ _.style }}
 {% endif %}
diff --git a/material/templates/partials/social.html b/material/templates/partials/social.html
index 3263c1a3d..3e1040f02 100644
--- a/material/templates/partials/social.html
+++ b/material/templates/partials/social.html
@@ -1,6 +1,14 @@
 {#-
   This file was automatically generated - do not edit
 -#}
+{% macro split_and_get(value, sep, index) %}
+  {%- if value.split is defined -%}
+    {%- set parts = value.split(sep) -%}
+  {%- else -%}
+    {%- set parts = value | split(sep) -%}
+  {%- endif -%}
+  {{- parts[index] -}}
+{% endmacro %}
 <div class="md-social">
   {% for social in config.extra.social %}
     {% set rel = "noopener" %}
@@ -9,8 +17,8 @@
     {% endif %}
     {% set title = social.name %}
     {% if not title and "//" in social.link %}
-      {% set (_, url) = social.link.split("//") %}
-      {% set title = url.split("/") | first %}
+      {% set url = split_and_get(social.link, "//", 1) %}
+      {% set title = split_and_get(url, "/", 0) %}
     {% endif %}
     <a href="{{ social.link }}" target="_blank" rel="{{ rel }}" title="{{ title | e }}" class="md-social__link">
       {% include ".icons/" ~ social.icon ~ ".svg" %}
diff --git a/src/templates/partials/content.html b/src/templates/partials/content.html
index d8c20eb78..e2aafb255 100644
--- a/src/templates/partials/content.html
+++ b/src/templates/partials/content.html
@@ -30,7 +30,7 @@
   Hack: check whether the content contains a h1 headline. If it doesn't, the
   page title (or respectively site name) is used as the main headline.
 -->
-{% if "\x3ch1" not in page.content %}
+{% if "\u003ch1" not in page.content %}
   <h1>{{ page.title | d(config.site_name, true)}}</h1>
 {% endif %}
 
diff --git a/src/templates/partials/icons.html b/src/templates/partials/icons.html
index c18cea364..a03ab9996 100644
--- a/src/templates/partials/icons.html
+++ b/src/templates/partials/icons.html
@@ -22,23 +22,25 @@
 
 <!-- Custom admonition icons -->
 {% if config.theme.icon.admonition %}
-  {% set _ = namespace(style = "\x3cstyle\x3e:root{") %}
+  {% set _ = namespace(style = "\u003cstyle\u003e:root{") %}
   {% for type, icon in config.theme.icon.admonition | items %}
-    {% import ".icons/" ~ icon ~ ".svg" as icon %}
-    {% set _.style = _.style ~
-      "--md-admonition-icon--" ~ type ~ ":" ~
-      "url('data:image/svg+xml;charset=utf-8," ~
-        icon | replace("\n", "") | urlencode ~
-      "');"
-    %}
+    {% if type and icon %}
+      {% import ".icons/" ~ icon ~ ".svg" as icon %}
+      {% set _.style = _.style ~
+        "--md-admonition-icon--" ~ type ~ ":" ~
+        "url('data:image/svg+xml;charset=utf-8," ~
+          icon | replace("\n", "") | urlencode ~
+        "');"
+      %}
+    {% endif %}
   {% endfor %}
-  {% set _.style = _.style ~ "}\x3c/style\x3e" %}
+  {% set _.style = _.style ~ "}\u003c/style\u003e" %}
   {{ _.style }}
 {% endif %}
 
 <!-- Custom annotation icon -->
 {% if config.theme.icon.annotation %}
-  {% set _ = namespace(style = "\x3cstyle\x3e:root{") %}
+  {% set _ = namespace(style = "\u003cstyle\u003e:root{") %}
   {% import ".icons/" ~ config.theme.icon.annotation ~ ".svg" as icon %}
   {% set _.style = _.style ~
     "--md-annotation-icon:" ~
@@ -46,27 +48,29 @@
       icon | replace("\n", "") | urlencode ~
     "');"
   %}
-  {% set _.style = _.style ~ "}\x3c/style\x3e" %}
+  {% set _.style = _.style ~ "}\u003c/style\u003e" %}
   {{ _.style }}
 {% endif %}
 
 <!-- Custom tag icons -->
 {% if config.theme.icon.tag %}
-  {% set _ = namespace(style = "\x3cstyle\x3e:root{") %}
+  {% set _ = namespace(style = "\u003cstyle\u003e:root{") %}
   {% for type, icon in config.theme.icon.tag | items %}
-    {% import ".icons/" ~ icon ~ ".svg" as icon %}
-    {% if type != "default" %}
-      {% set modifier = ".md-tag--" ~ type %}
+    {% if type and icon %}
+      {% import ".icons/" ~ icon ~ ".svg" as icon %}
+      {% if type != "default" %}
+        {% set modifier = ".md-tag--" ~ type %}
+      {% endif %}
+      {% set _.style = _.style ~
+        ".md-tag" ~ modifier ~ "{" ~
+          "--md-tag-icon:" ~
+          "url('data:image/svg+xml;charset=utf-8," ~
+            icon | replace("\n", "") | urlencode ~
+          "');" ~
+        "}"
+      %}
     {% endif %}
-    {% set _.style = _.style ~
-      ".md-tag" ~ modifier ~ "{" ~
-        "--md-tag-icon:" ~
-        "url('data:image/svg+xml;charset=utf-8," ~
-          icon | replace("\n", "") | urlencode ~
-        "');" ~
-      "}"
-    %}
   {% endfor %}
-  {% set _.style = _.style ~ "}\x3c/style\x3e" %}
+  {% set _.style = _.style ~ "}\u003c/style\u003e" %}
   {{ _.style }}
 {% endif %}
diff --git a/src/templates/partials/social.html b/src/templates/partials/social.html
index f9be14156..2a768879b 100644
--- a/src/templates/partials/social.html
+++ b/src/templates/partials/social.html
@@ -20,6 +20,25 @@
   IN THE SOFTWARE.
 -->
 
+<!--
+  Split a string with a separator - while Jinja allows to call ".split" on a
+  string, it doesn't natively bring a "split" filter implementation. We can't
+  simply add further filters, since MkDocs doesn't allow it, so we're stuck
+  with the function call. This however doesn't work with minijinja, which does
+  not allow to call functions on template variables, but has a "split" filter.
+  Thus, we just branch and extract the part that interests us here.
+-->
+{% macro split_and_get(value, sep, index) %}
+  {%- if value.split is defined -%}
+    {%- set parts = value.split(sep) -%}
+  {%- else -%}
+    {%- set parts = value | split(sep) -%}
+  {%- endif -%}
+  {{- parts[index] -}}
+{% endmacro %}
+
+<!-- ---------------------------------------------------------------------- -->
+
 <!-- Social links -->
 <div class="md-social">
   {% for social in config.extra.social %}
@@ -33,8 +52,8 @@
     <!-- Compute title and render link -->
     {% set title = social.name %}
     {% if not title and "//" in social.link %}
-      {% set (_, url) = social.link.split("//") %}
-      {% set title = url.split("/") | first %}
+      {% set url = split_and_get(social.link, "//", 1) %}
+      {% set title = split_and_get(url, "/", 0) %}
     {% endif %}
     <a
       href="{{ social.link }}"