diff --git a/Web/Controls/Help/Video/DocumentServer/IntegrateConfluence/IntegrateConfluence.ascx b/Web/Controls/Help/Video/DocumentServer/IntegrateConfluence/IntegrateConfluence.ascx
index f90075c09..084b7497f 100644
--- a/Web/Controls/Help/Video/DocumentServer/IntegrateConfluence/IntegrateConfluence.ascx
+++ b/Web/Controls/Help/Video/DocumentServer/IntegrateConfluence/IntegrateConfluence.ascx
@@ -24,7 +24,7 @@
 		<iframe src="https://www.youtube.com/embed/bPorM--L11o?wmode=transparent" frameborder="0" allowfullscreen></iframe>
     </div>
     <div>
-    <p>Learn how to connect ONLYOFFICE online editors to Confluence using the official connector, wich allows to easily create, edit and collaborate on text documents, spreadsheets, and presentations within Confluence.</p>
+    <p>Learn how to connect ONLYOFFICE online editors to Confluence using the official connector, which allows to easily create, edit and collaborate on text documents, spreadsheets, and presentations within Confluence.</p>
     </div>
     
 </div>
\ No newline at end of file
diff --git a/Web/Controls/Help/Video/DocumentServer/IntegrateNextcloud/IntegrateNextcloud.ascx b/Web/Controls/Help/Video/DocumentServer/IntegrateNextcloud/IntegrateNextcloud.ascx
index 133d5aa14..92f04fd4f 100644
--- a/Web/Controls/Help/Video/DocumentServer/IntegrateNextcloud/IntegrateNextcloud.ascx
+++ b/Web/Controls/Help/Video/DocumentServer/IntegrateNextcloud/IntegrateNextcloud.ascx
@@ -25,7 +25,7 @@
 		<iframe src="https://www.youtube.com/embed/GAd-x_sP6ng?wmode=transparent" frameborder="0" allowfullscreen></iframe>
     </div>
     <div>
-    <p>Learn how to integrate ONLYOFFICE online editors with Nextcloud using the official connector, wich allows to easily create, edit and collaborate on text documents, spreadsheets, and presentations within Nextcloud.</p>
+    <p>Learn how to integrate ONLYOFFICE online editors with Nextcloud using the official connector, which allows to easily create, edit and collaborate on text documents, spreadsheets, and presentations within Nextcloud.</p>
     </div>
     
 </div>
\ No newline at end of file
diff --git a/Web/Controls/Help/Video/DocumentServer/IntegrateNuxeo/IntegrateNuxeo.ascx b/Web/Controls/Help/Video/DocumentServer/IntegrateNuxeo/IntegrateNuxeo.ascx
index 0b17c972e..3c1d1168b 100644
--- a/Web/Controls/Help/Video/DocumentServer/IntegrateNuxeo/IntegrateNuxeo.ascx
+++ b/Web/Controls/Help/Video/DocumentServer/IntegrateNuxeo/IntegrateNuxeo.ascx
@@ -25,7 +25,7 @@
 		<iframe src="https://www.youtube.com/embed/9tVQ6df3q3w?wmode=transparent" frameborder="0" allowfullscreen></iframe>
     </div>
     <div>
-    <p>Learn how to integrate ONLYOFFICE online editors with Nuxeo using the official connector, wich allows to easily create, edit and collaborate on text documents, spreadsheets, and presentations within Nuxeo.</p>
+    <p>Learn how to integrate ONLYOFFICE online editors with Nuxeo using the official connector, which allows to easily create, edit and collaborate on text documents, spreadsheets, and presentations within Nuxeo.</p>
     </div>
     
 </div>
\ No newline at end of file
diff --git a/Web/Masters/BaseMaster.master b/Web/Masters/BaseMaster.master
index 3cc570d56..4f5b018fc 100644
--- a/Web/Masters/BaseMaster.master
+++ b/Web/Masters/BaseMaster.master
@@ -87,6 +87,16 @@
 </script>
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="<%= TeamLabUICulture.Name %>" lang="<%= TeamLabUICulture.Name %>" prefix="og: http://ogp.me/ns#">
 <head runat="server">
+    <!-- Google Tag Manager -->
+<script>(function (w, d, s, l, i) {
+w[l] = w[l] || []; w[l].push({
+'gtm.start':
+new Date().getTime(), event: 'gtm.js'
+}); var f = d.getElementsByTagName(s)[0],
+j = d.createElement(s), dl = l != 'dataLayer' ? '&l=' + l : ''; j.async = true; j.src =
+'https://www.googletagmanager.com/gtm.js?id=' + i + dl; f.parentNode.insertBefore(j, f);
+})(window, document, 'script', 'dataLayer', 'GTM-5NW47TX');</script>
+<!-- End Google Tag Manager -->
     <title></title>
     <meta charset="utf-8" />
     <link rel="icon" href="<%=WebPath.GetPath("/images/favicon.ico") %>" type="image/x-icon" />
@@ -134,7 +144,10 @@
     <asp:ContentPlaceHolder ID="head" runat="server"></asp:ContentPlaceHolder>
 </head>
 <asp:contentplaceholder id="bodyid" runat="server"></asp:contentplaceholder>
-
+    <!-- Google Tag Manager (noscript) -->
+<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-5NW47TX"
+height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+<!-- End Google Tag Manager (noscript) -->
 <div class="BaseSide">
     <form id="mainForm" runat="server">
         <div class="mainpart">
