diff --git a/class.php b/class.php
index 16d3878..92c02b0 100644
--- a/class.php
+++ b/class.php
@@ -86,22 +86,56 @@ class ps4 {
 			$sql = "UPDATE game_thumbnail SET thumbnail_url = '".$url."' WHERE game_id = '".$gameid."';";
 		}
 
+
 		if (($url == "") or ($url == "null")) {
-			echo "<strong>ERROR:</strong> No URL specified.";
-			echo "<br/><br/>";
+			echo "<div class=\"message-error center500\"><div class=\"message-head\">ERROR</div><div class=\"message-details\">No URL specified.</div>";
 		} else {
-			$result = $this->mysql_conn($sql);
-			if ($result == 1) {
-				echo "<strong>SUCCESS:</strong> Updated image URL for <strong>". $gamename ."</strong> (". $gameid .")";
-				echo "<br/><br/>";
+			if ($this->isImage($url)) {
+				$result = $this->mysql_conn($sql);
+				if ($result == 1) {
+					echo "<div class=\"message-success center500\"><div class=\"message-head\">SUCCESS</div><div class=\"message-details\">Updated image URL for <strong>". $gamename ."</strong> (". $gameid .")</div>";
+				} else {
+					echo "<div class=\"message-error center500\"><div class=\"message-head\">ERROR</div><div class=\"message-details\">Can't update image URL for <strong>". $gamename ."</strong> (". $gameid .")</div>";
+				}
 			} else {
-				echo "<strong>ERROR:</strong> Can't update image URL for <strong>". $gamename ."</strong> (". $gameid .")";
-				echo "<br/><br/>";
+				echo "<div class=\"message-error center500\"><div class=\"message-head\">ERROR</div><div class=\"message-details\">Not an image.</div>";
 			}
 		}
 
 	}
 
+	  function isImage($url)
+	  {
+	     $params = array('http' => array(
+	                  'method' => 'HEAD'
+	               ));
+	     $ctx = stream_context_create($params);
+	     $fp = @fopen($url, 'rb', false, $ctx);
+	     if (!$fp) 
+	        return false;  // Problem with url
+
+	    $meta = stream_get_meta_data($fp);
+	    if ($meta === false)
+	    {
+	        fclose($fp);
+	        return false;  // Problem reading data from url
+	    }
+
+	    $wrapper_data = $meta["wrapper_data"];
+	    if(is_array($wrapper_data)){
+	      foreach(array_keys($wrapper_data) as $hh){
+	          if (substr($wrapper_data[$hh], 0, 19) == "Content-Type: image") // strlen("Content-Type: image") == 19 
+	          {
+	            fclose($fp);
+	            return true;
+	          }
+	      }
+	    }
+
+	    fclose($fp);
+	    return false;
+  	}
+
 	function games_reorder($games,$orderby="last_played_desc") {
 		function totaltime_asc($a,$b) {
 			return ($a["game_total_time"] <= $b["game_total_time"]) ? -1 : 1;