diff --git a/.DS_Store b/.DS_Store
index cd4f5cd..a86f1b9 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7a22d12
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/_output/*
+!/_output/AUTO_GEN_FOLDER_DO_NOT_EDIT_FILE_HERE
+.DS_Store
\ No newline at end of file
diff --git a/_output/index.html b/_output/index.html
index d043129..60ad3d4 100644
--- a/_output/index.html
+++ b/_output/index.html
@@ -78,6 +78,7 @@
     </footer>
   </div>
   <script src="fontawesome/js/all.js" data-auto-replace-svg="nest"></script>
+  
   <script src="./scripts.js"></script>
 </body>
 </html>
diff --git a/config.yml b/config.yml
index 1766041..53db2c7 100644
--- a/config.yml
+++ b/config.yml
@@ -14,6 +14,9 @@ plugins:
   - MediumFollowersCountPlugin:
       username: zhgchgli
 
+# Google Analytics tracking id
+google_analytics_id:
+
 # HTML Title
 title: "ZhgChgLi's Links"
 
diff --git a/themes/default/index.html b/themes/default/index.html
index 51f1903..1107622 100644
--- a/themes/default/index.html
+++ b/themes/default/index.html
@@ -41,6 +41,17 @@
     </footer>
   </div>
   <script src="fontawesome/js/all.js" data-auto-replace-svg="nest"></script>
+  {% if google_analytics_id %}
+    <!-- Google tag (gtag.js) -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id={{ google_analytics_id }}"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', '{{ google_analytics_id }}');
+    </script>
+  {% endif %}
   <script src="./scripts.js"></script>
 </body>
 </html>