diff --git a/scripts/deploy.js b/scripts/deploy.js
index 176a4c437bcc94ac2d74e524995def9088f344e1..5fde259a00cac0e03fe680410768fabd5d42dc0d 100644
--- a/scripts/deploy.js
+++ b/scripts/deploy.js
@@ -14,6 +14,9 @@ const buildDir = path.resolve(__dirname, '../build/');
 const deployDir = path.resolve(buildDir, 'deploy/');
 const localPath = path.resolve(deployDir, 'molstar.github.io/');
 
+const analyticsTag = /<!-- __MOLSTAR_ANALYTICS__ -->/g;
+const analyticsCode = `<!-- Cloudflare Web Analytics --><script defer src='https://static.cloudflareinsights.com/beacon.min.js' data-cf-beacon='{"token": "c414cbae2d284ea995171a81e4a3e721"}'></script><!-- End Cloudflare Web Analytics -->`;
+
 function log(command, stdout, stderr) {
     if (command) {
         console.log('\n###', command);
@@ -22,11 +25,18 @@ function log(command, stdout, stderr) {
     }
 }
 
+function addAnalytics(path) {
+    const data = fs.readFileSync(path, 'utf8');
+    const result = data.replace(analyticsTag, analyticsCode);
+    fs.writeFileSync(path, result, 'utf8');
+}
+
 function copyViewer() {
     console.log('\n###', 'copy viewer files');
     const viewerBuildPath = path.resolve(buildDir, '../build/viewer/');
     const viewerDeployPath = path.resolve(localPath, 'viewer/');
     fse.copySync(viewerBuildPath, viewerDeployPath, { overwrite: true });
+    addAnalytics(path.resolve(viewerDeployPath, 'index.html'));
 }
 
 if (!fs.existsSync(localPath)) {
diff --git a/src/apps/viewer/index.html b/src/apps/viewer/index.html
index 40af8122b84c07e39c0c4392580fa905b75b0165..90808052807b6f987b53a46e6de5d7af670d4f72 100644
--- a/src/apps/viewer/index.html
+++ b/src/apps/viewer/index.html
@@ -91,5 +91,6 @@
             var emdb = getParam('emdb', '[^&]+').trim();
             if (emdb) viewer.loadEmdb(emdb);
         </script>
+        <!-- __MOLSTAR_ANALYTICS__ -->
     </body>
 </html>
\ No newline at end of file