diff --git a/src/OEmbed.php b/src/OEmbed.php
index 46a929a..9deec28 100644
--- a/src/OEmbed.php
+++ b/src/OEmbed.php
@@ -7,6 +7,9 @@
 
 class OEmbed{
 
+    public const TYPE_JSON = 'application/json+oembed';
+    public const TYPE_XML = 'text/xml+oembed';
+
     public static function decode(string $data,string $format='xml'): ?array{
         if($format==='json'){
             return self::decodeJSON($data);