diff --git a/index.html b/index.html
index deaaa5276..f8ad5bb8d 100644
--- a/index.html
+++ b/index.html
@@ -1,4 +1,5 @@
-<html>
+<!doctype html>
+<html lang="en-US" dir="ltr" prefix="og:http://ogp.me/ns# fb:http://ogp.me/ns/fb#">
 <!--
   The MIT License (MIT)
 
@@ -24,10 +25,9 @@
   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   SOFTWARE.
   -->
-
 <head>
+    <meta charset="utf-8" /><meta http-equiv="Content-type" content="text/html;charset=utf-8" />
     <!-- if you feel an urge to move this to bootstrap or something, you're most welcome -->
-    <meta charset="utf-8">
     <title>Online JavaScript beautifier</title>
     <link rel="icon" href="web/favicon.png" type="image/png">
     <link rel="stylesheet" href="web/third-party/codemirror/lib/codemirror.css">
