diff --git a/plexpy/notifiers.py b/plexpy/notifiers.py
index a6fffb1f..e2e32f91 100644
--- a/plexpy/notifiers.py
+++ b/plexpy/notifiers.py
@@ -3434,6 +3434,10 @@ class TWITTER(Notifier):
             parameters = kwargs['parameters']
             poster_url = parameters.get('poster_url','')
 
+        # Hack to add media type to attachment
+        if poster_url:
+            poster_url += '.png'
+
         if self.config['incl_subject']:
             return self._send_tweet(subject + '\r\n' + body, attachment=poster_url)
         else:
diff --git a/plexpy/webserve.py b/plexpy/webserve.py
index edd3a40a..aeac2026 100644
--- a/plexpy/webserve.py
+++ b/plexpy/webserve.py
@@ -4020,7 +4020,7 @@ class WebInterface(object):
     @cherrypy.expose
     def image(self, *args, **kwargs):
         if args:
-            img_hash = args[0]
+            img_hash = args[0].split('.')[0]
 
             if img_hash in ('poster', 'cover', 'art'):
                 if img_hash == 'poster':