diff --git a/app.py b/app.py
index c59c6bef..4e16fd92 100644
--- a/app.py
+++ b/app.py
@@ -29,6 +29,8 @@ def find_key(token):
         "*.cloudflare.com",
         "*.googletagmanager.com",
         "*.google-analytics.com",
+        "*.carbonads.com",
+        "*.carbonads.net",
         "'unsafe-inline'",
         "'unsafe-eval'",
     ],
diff --git a/docs/_static/.gitignore b/docs/_static/.gitignore
index 3e807c5f..7f2040ec 100644
--- a/docs/_static/.gitignore
+++ b/docs/_static/.gitignore
@@ -4,3 +4,4 @@
 !.gitignore
 !guido.png
 !style.css
+!carbonad.css
diff --git a/docs/_static/carbonad.css b/docs/_static/carbonad.css
new file mode 100644
index 00000000..38e5401e
--- /dev/null
+++ b/docs/_static/carbonad.css
@@ -0,0 +1,90 @@
+#carbonads {
+  display: block;
+  overflow: hidden;
+  padding: 1em;
+  padding-bottom: 0.3em;
+  line-height: 1.5;
+  border: 4px solid #f5f5f5;
+  margin-top: 10px;
+  margin-bottom: 10px;
+}
+
+#carbonads a {
+  text-decoration: none !important;
+  border-bottom: none;
+}
+
+#carbonads a:hover {
+  text-decoration: none !important;
+}
+
+#carbonads span {
+  display: block;
+  overflow: hidden;
+}
+
+.carbon-img {
+  display: block;
+  margin: 0 auto 8px;
+}
+
+.carbon-text {
+  display: block;
+  text-align: left;
+  margin-bottom: .5em;
+  color: #666;
+}
+
+.carbon-poweredby {
+  display: block;
+  text-align: right;
+  font-size: .9em;
+  color: #ccc;
+}
+
+@media only screen and (min-width: 320px) and (max-width: 875px) {
+  #carbonads {
+    float: none;
+    max-width: 330px;
+    border: 0;
+    display: block;
+    overflow: hidden;
+    margin-top: 20px;
+    margin-bottom: 20px;
+    border-radius: 4px;
+    text-align: center;
+    box-shadow: 0 0 0 1px hsla(0, 0%, 0%, .1);
+    font-size: var(--font-size);
+    background-color: #eee;
+    line-height: 1.5;
+  }
+  #carbonads span {
+    position: relative;
+  }
+  #carbonads > span {
+    max-width: none;
+  }
+  .carbon-img {
+    float: left;
+    margin: 0;
+  }
+
+  .carbon-img img {
+    max-width: 130px !important;
+  }
+  .carbon-text {
+    float: left;
+    margin-bottom: 0;
+    padding: 8px 20px;
+    text-align: left;
+    color: #333 !important;
+    max-width: calc(100% - 130px - 3em);
+  }
+  .carbon-poweredby {
+    left: 130px;
+    bottom: 0;
+    display: block;
+    color: #555 !important;
+    width: 100%;
+  }
+}
diff --git a/docs/_templates/carbonad.html b/docs/_templates/carbonad.html
new file mode 100644
index 00000000..f8f215f1
--- /dev/null
+++ b/docs/_templates/carbonad.html
@@ -0,0 +1 @@
+<script async type="text/javascript" src="//cdn.carbonads.com/carbon.js?serve={{ carbonad_serve }}&placement={{ carbonad_placement }}" id="_carbonads_js"></script>
diff --git a/docs/conf.py b/docs/conf.py
index c2d51f54..cb274865 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -134,7 +134,13 @@
 # The name for this set of Sphinx documents.  If None, it defaults to
 # "<project> v<release> documentation".
 html_title = "pysheeet"
-html_context = {"tracking_id": os.environ.get("TRACKING_ID")}
+html_context = {
+    "tracking_id": os.environ.get("TRACKING_ID"),
+    "carbonad_serve": os.environ.get("CARBONAD_SERVE"),
+    "carbonad_placement": os.environ.get("CARBONAD_PLACEMENT")
+}
+
+has_carbonad = os.environ.get("CARBONAD_SERVE") and os.environ.get("CARBONAD_PLACEMENT")
 
 # A shorter title for the navigation bar.  Default is the same as html_title.
 #html_short_title = None
@@ -154,6 +160,8 @@
 html_static_path = ['_static']
 
 html_css_files = ['style.css']
+if has_carbonad:
+    html_css_files.append('carbonad.css')
 
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied
@@ -169,23 +177,26 @@
 #html_use_smartypants = True
 
 # Custom sidebar templates, maps document names to template names.
-html_sidebars = {
-    'index': [
-        'sidebarintro.html',
-        'link.html',
-        'relations.html',
-        'github.html',
-        'searchbox.html'
-    ],
-    '**': [
-        'sidebarintro.html',
-        'link.html',
-        'github.html',
-        'localtoc.html',
-        'relations.html',
-        'searchbox.html'
-    ]
-}
+sidebar_index = [
+    'sidebarintro.html',
+    'link.html',
+    'github.html',
+]
+sidebar_notes = [
+    'sidebarintro.html',
+    'link.html',
+    'github.html',
+]
+
+if has_carbonad:
+    sidebar_index.append('carbonad.html')
+    sidebar_notes.append('carbonad.html')
+
+sidebar_index.append('searchbox.html')
+sidebar_notes.append('localtoc.html')
+sidebar_notes.append('searchbox.html')
+html_sidebars = {'index': sidebar_index, '**': sidebar_notes}
+
 
 # Additional templates that should be rendered to pages, maps page names to
 # template names.