diff --git a/frontend/index.html b/frontend/index.html
index ccda4ce..928da25 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -35,17 +35,17 @@
 	<table id="move">
 		<tr>
 			<td>
-				<input type="image" src="images/control_rewind_blue.png" value="move_back" />
-				<input type="image" onclick="plot" src="images/zoom_in.png" value="zoom_in" />
+				<input type="image" src="images/control_rewind_blue.png" value="move_back" title="Move back" />
+				<input type="image" onclick="plot" src="images/zoom_in.png" value="zoom_in" title="Zoom in" />
 			</td>
 			<td>
-				<input type="image" src="images/control_end_blue.png" value="move_last" />
-				<input type="image" src="images/arrow_refresh.png" value="refresh" />
-				<input type="image" src="images/zoom.png" value="zoom_reset" />
+				<input type="image" src="images/control_end_blue.png" value="move_last" title="Move to now" />
+				<input type="image" src="images/arrow_refresh.png" value="refresh" title="Refresh" />
+				<input type="image" src="images/zoom.png" value="zoom_reset" title="Reset zoom" />
 			</td>
 			<td>
-				<input type="image" src="images/zoom_out.png" value="zoom_out" />
-				<input type="image" src="images/control_fastforward_blue.png" value="move_forward" />
+				<input type="image" src="images/zoom_out.png" value="zoom_out" title="Zoom out" />
+				<input type="image" src="images/control_fastforward_blue.png" value="move_forward" title="Move forward" />
 			</td>
 		</tr>
 	</table>