changed the way the url is escaped. should fix #14

api.php

@@ -10,7 +10,7 @@ $resizewidth = $_GET['width'];
 $cache = $_GET['cache'];
 $onfail = rawurldecode($_GET['onfail']);
 
-$params = array('url'=>$url,
+$params = array('url'=>trim($url),
 				'type'=>$type,
 				'timeout'=>$timeout,
 				'viewport'=>$viewport,

http2pic.class.php

@@ -210,7 +210,7 @@ class http2pic
 			$cmd.=' -f png';
 		
 		//add url to cmd
-		$cmd.=' '.escapeshellarg($this->params['url']);
+		$cmd.=' \''.addslashes($this->params['url']).'\'';
 		
 		//add storage path to cmd
 		$cmd.=' '.escapeshellarg($this->params['file']);