diff --git a/leapt/im-bundle/2.0/config/packages/leapt_im.yaml b/leapt/im-bundle/2.0/config/packages/leapt_im.yaml
index c499874b..a3b17df2 100644
--- a/leapt/im-bundle/2.0/config/packages/leapt_im.yaml
+++ b/leapt/im-bundle/2.0/config/packages/leapt_im.yaml
@@ -1,6 +1,7 @@
+# Read the documentation: https://github.com/leapt/im-bundle/blob/master/docs/configuration.rst
 leapt_im:
     cache_path: cache/im
-    # You can define reusable formats here
     formats:
-        #my_format:
-        #    thumbnail: 350x350^
+        # Resize to fit in 100x100, only if bigger, and remove all crap (meta-data, ...)
+        medium:
+            thumbnail: 100x100>