diff --git a/doc/header.html b/doc/header.html
index a847be55..776a3e13 100644
--- a/doc/header.html
+++ b/doc/header.html
@@ -4,8 +4,11 @@
 <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
 <meta http-equiv="X-UA-Compatible" content="IE=9"/>
 <meta name="generator" content="Doxygen $doxygenversion"/>
-<!--BEGIN PROJECT_NAME--><title>$projectname: $title</title><!--END PROJECT_NAME-->
-<!--BEGIN !PROJECT_NAME--><title>$title</title><!--END !PROJECT_NAME-->
+<meta name="description" content="PhasicFlow is an open-source parallel DEM package for simulating granular flow developed in C++ and can be exectued on both GPU (like cuda) and CPU.">
+<!--BEGIN PROJECT_NAME-->
+<title>$projectname: $title</title><!--END PROJECT_NAME-->
+<!--BEGIN !PROJECT_NAME-->
+<title>$title</title><!--END !PROJECT_NAME-->
 <link href="$relpath^tabs.css" rel="stylesheet" type="text/css"/>
 <script type="text/javascript" src="$relpath^jquery.js"></script>
 <script type="text/javascript" src="$relpath^dynsections.js"></script>