diff --git a/src/Ui/template/wrapper.html b/src/Ui/template/wrapper.html
index 4e6ae06f..6f2c4741 100644
--- a/src/Ui/template/wrapper.html
+++ b/src/Ui/template/wrapper.html
@@ -51,7 +51,7 @@ if (window.self !== window.top && document.execCommand) document.execCommand("St
 
 
 <!-- Site Iframe -->
-<iframe src='about:blank' id='inner-iframe' sandbox="allow-forms allow-scripts allow-top-navigation allow-popups allow-modals {sandbox_permissions}"></iframe>
+<iframe src='about:blank' id='inner-iframe' sandbox="allow-forms allow-scripts allow-top-navigation allow-popups allow-modals {sandbox_permissions}" allowfullscreen="true" webkitallowfullscreen="true" mozallowfullscreen="true" oallowfullscreen="true" msallowfullscreen="true"></iframe>
 
 <!-- Site info -->
 <script>