diff --git a/notebook/templates/tree.html b/notebook/templates/tree.html
index 2ee88e2dc..1e2377b93 100644
--- a/notebook/templates/tree.html
+++ b/notebook/templates/tree.html
@@ -32,14 +32,14 @@ data-server-root="{{server_root}}"
                 {% trans %}Select items to perform actions on them.{% endtrans %}
               </div>
               <div class="dynamic-buttons">
-                  <button title="{% trans %}Duplicate selected{% endtrans %}" class="duplicate-button btn btn-default btn-xs">{% trans %}Duplicate{% endtrans %}</button>
-                  <button title="{% trans %}Rename selected{% endtrans %}" class="rename-button btn btn-default btn-xs">{% trans %}Rename{% endtrans %}</button>
-                  <button title="{% trans %}Move selected{% endtrans %}" class="move-button btn btn-default btn-xs">{% trans %}Move{% endtrans %}</button>
-                  <button title="{% trans %}Download selected{% endtrans %}" class="download-button btn btn-default btn-xs">{% trans %}Download{% endtrans %}</button>
-                  <button title="{% trans %}Shutdown selected notebook(s){% endtrans %}" class="shutdown-button btn btn-default btn-xs btn-warning">{% trans %}Shutdown{% endtrans %}</button>
-                  <button title="{% trans %}View selected{% endtrans %}" class="view-button btn btn-default btn-xs">{% trans %}View{% endtrans %}</button>
-                  <button title="{% trans %}Edit selected{% endtrans %}" class="edit-button btn btn-default btn-xs">{% trans %}Edit{% endtrans %}</button>
-                  <button title="{% trans %}Delete selected{% endtrans %}" class="delete-button btn btn-default btn-xs btn-danger"><i class="fa fa-trash"></i></button>
+                  <button title="{% trans %}Duplicate selected{% endtrans %}" aria-label="{% trans %}Duplicate selected{% endtrans %}" class="duplicate-button btn btn-default btn-xs">{% trans %}Duplicate{% endtrans %}</button>
+                  <button title="{% trans %}Rename selected{% endtrans %}" aria-label="{% trans %}Rename selected{% endtrans %}" class="rename-button btn btn-default btn-xs">{% trans %}Rename{% endtrans %}</button>
+                  <button title="{% trans %}Move selected{% endtrans %}" aria-label="{% trans %}Move selected{% endtrans %}" class="move-button btn btn-default btn-xs">{% trans %}Move{% endtrans %}</button>
+                  <button title="{% trans %}Download selected{% endtrans %}" aria-label="{% trans %}Download selected{% endtrans %}" class="download-button btn btn-default btn-xs">{% trans %}Download{% endtrans %}</button>
+                  <button title="{% trans %}Shutdown selected notebook(s){% endtrans %}" aria-label="{% trans %}Shutdown selected notebook(s){% endtrans %}" class="shutdown-button btn btn-default btn-xs btn-warning">{% trans %}Shutdown{% endtrans %}</button>
+                  <button title="{% trans %}View selected{% endtrans %}" aria-label="{% trans %}View selected{% endtrans %}" class="view-button btn btn-default btn-xs">{% trans %}View{% endtrans %}</button>
+                  <button title="{% trans %}Edit selected{% endtrans %}" aria-label="{% trans %}Edit selected{% endtrans %}" class="edit-button btn btn-default btn-xs">{% trans %}Edit{% endtrans %}</button>
+                  <button title="{% trans %}Delete selected{% endtrans %}" aria-label="{% trans %}Delete selected{% endtrans %}" class="delete-button btn btn-default btn-xs btn-danger"><i class="fa fa-trash"></i></button>
               </div>
             </div>
             <div class="col-sm-4 no-padding tree-buttons">
@@ -79,7 +79,7 @@ data-server-root="{{server_root}}"
                   </ul>
                 </div>
                 <div class="btn-group">
-                    <button id="refresh_notebook_list" title="{% trans %}Refresh notebook list{% endtrans %}" class="btn btn-default btn-xs"><i class="fa fa-refresh"></i></button>
+                    <button id="refresh_notebook_list" title="{% trans %}Refresh notebook list{% endtrans %}"  aria-label="{% trans %}Refresh notebook list{% endtrans %}" class="btn btn-default btn-xs"><i class="fa fa-refresh"></i></button>
                 </div>
               </div>
             </div>
@@ -87,7 +87,7 @@ data-server-root="{{server_root}}"
           <div id="notebook_list">
             <div id="notebook_list_header" class="row list_header">
               <div class="btn-group dropdown" id="tree-selector">
-                <button title="{% trans %}Select All / None{% endtrans %}" type="button" class="btn btn-default btn-xs" id="button-select-all">
+                <button title="{% trans %}Select All / None{% endtrans %}" aria-label="{% trans %}Select All / None{% endtrans %}" type="button" class="btn btn-default btn-xs" id="button-select-all">
                   <input type="checkbox" class="pull-left tree-selector" id="select-all"><span id="counter-select-all">&nbsp;</span></input>
                 </button>
                 <button title="{% trans %}Select...{% endtrans %}" class="btn btn-default btn-xs dropdown-toggle" type="button" id="tree-selector-btn" data-toggle="dropdown" aria-expanded="true">
@@ -103,7 +103,7 @@ data-server-root="{{server_root}}"
               </div>
               <div id="project_name">
                 <ul class="breadcrumb">
-                  <li><a href="{{breadcrumbs[0][0]}}"><i class="fa fa-folder"></i></a></li>
+                  <li><a href="{{breadcrumbs[0][0]}}"><i class="fa fa-folder" alt="folder icon"></i></a></li>
                 {% for crumb in breadcrumbs[1:] %}
                   <li><a href="{{crumb[0]}}">{{crumb[1]}}</a></li>
                 {% endfor %}
@@ -131,7 +131,7 @@ data-server-root="{{server_root}}"
             </div>
             <div class="col-sm-4 no-padding tree-buttons">
               <span id="running_buttons" class="pull-right">
-              <button id="refresh_running_list" title="{% trans %}Refresh running list{% endtrans %}" class="btn btn-default btn-xs"><i class="fa fa-refresh"></i></button>
+              <button id="refresh_running_list" title="{% trans %}Refresh running list{% endtrans %}" aria-label="{% trans %}Refresh running list{% endtrans %}" class="btn btn-default btn-xs"><i class="fa fa-refresh"></i></button>
               </span>
             </div>
           </div>