diff --git a/static/scripts/api.js b/static/scripts/api.js
index fb2b42b..7330c24 100644
--- a/static/scripts/api.js
+++ b/static/scripts/api.js
@@ -18,6 +18,7 @@ api.poll = function() {
 
 api.update = function(s) {
     json = JSON.parse(s);
+    materials.qubit.size = big.checked ? 2 : 0.4;
     graph.update(json);
 }
 
diff --git a/templates/index.html b/templates/index.html
index 4c57cab..c75ff86 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -48,6 +48,7 @@
         <li><a onclick="share()">Share</a></li>
         <li><a href="/{{uuid}}/download">Download</a></li>
         <li><input id=curvy type="checkbox" checked></input> Curved edges</li>
+        <li><input id=big type="checkbox"></input> Big nodes</li>
         <li><a href="/doc" id=help>Documentation</a></li>
     </ul>
 </div>