diff --git a/site_verify.admin.inc b/site_verify.admin.inc
index 732f999..5bd5550 100644
--- a/site_verify.admin.inc
+++ b/site_verify.admin.inc
@@ -176,6 +176,12 @@ function site_verify_edit_form($form, &$form_state, $record = array(), $engine =
 function site_verify_validate_file($form, &$form_state) {
   $values = &$form_state['values'];
 
+  if (!empty($values['meta'])) {
+    if (!site_validate_meta_tag($values['meta'])) {
+      form_set_error('meta', t('The meta tag "@tag" is not valid. View the w3schools <a href="http://www.w3schools.com/tags/tag_meta.asp" target="_blank"> example</a>', array('@tag' => $values['meta'])));
+    }
+  }
+
   // Import the uploaded verification file.
   $validators = array('file_validate_extensions' => array());
   if ($file = file_save_upload('file_upload', $validators, FALSE, FILE_EXISTS_REPLACE)) {
@@ -200,6 +206,33 @@ function site_verify_validate_file($form, &$form_state) {
 }
 
 /**
+ * Helper function to validate meta tags
+ * @param  string $string
+ *   The meta tag string to validate.
+ * @return boolean
+ *   A flag to indicate if validation passed.
+ */
+function site_validate_meta_tag($string) {
+  $doc = new DOMDocument();
+  @$doc->loadHTML($string);
+  $metas = $doc->getElementsByTagName('meta');
+
+  if ($metas->length <! 0) {
+    return FALSE;
+  }
+
+  for ($i = 0; $i < $metas->length; $i++) {
+    $meta = $metas->item($i);
+    foreach($meta->attributes as $attribute_name => $attribute_node) {
+      if (!empty($attribute_name) && empty($attribute_node->nodeValue)) {
+        return FALSE;
+      }
+    }
+  }
+
+  return TRUE;
+}
+/**
  * Submission callback; send form to the next step or save the verification.
  */
 function site_verify_edit_form_submit($form, &$form_state) {