From f30860ff1d95fb3c7d747cc169ab11950848a730 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 4 Oct 2010 13:15:21 -0600
Subject: [PATCH] Trim cover: Use a lossless intermediate format

---
 src/calibre/gui2/dialogs/metadata_single.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/gui2/dialogs/metadata_single.py b/src/calibre/gui2/dialogs/metadata_single.py
index 6c57e30166..b39b752ac6 100644
--- a/src/calibre/gui2/dialogs/metadata_single.py
+++ b/src/calibre/gui2/dialogs/metadata_single.py
@@ -308,7 +308,7 @@ class MetadataSingleDialog(ResizableDialog, Ui_MetadataSingleDialog):
         im = Image()
         im.load(cdata)
         im.trim(10)
-        cdata = im.export('jpg')
+        cdata = im.export('png')
         pix = QPixmap()
         pix.loadFromData(cdata)
         self.cover.setPixmap(pix)