diff --git a/index.html b/index.html
index a142913..782fa7f 100644
--- a/index.html
+++ b/index.html
@@ -73,6 +73,7 @@
         </div>
     </div>
     <footer class="container text-center text-italic p-2">
+        <p class="p-1">Powered by <a href="https://www.ispc.cnr.it/it_it/2021/04/19/bhilab/">BHiLab</a></p>
     </footer>
 
 </body>
diff --git a/js/index.js b/js/index.js
index d2b26b1..c63a3e6 100644
--- a/js/index.js
+++ b/js/index.js
@@ -41,7 +41,7 @@ document.addEventListener('DOMContentLoaded', () => {
         ctx.clearRect(0,0,canvas.width, canvas.height);
 
         const txtColor = "#000";
-        const qrSize = 220;
+        const qrSize = 225;
         const leftMargin = 12;
 
         ctx.fillStyle = txtColor;