diff -r 7475b50516c8 -r 6a70ef009b65 src/pyams_default_theme/shared/view/portlet/interfaces.py
--- a/src/pyams_default_theme/shared/view/portlet/interfaces.py	Wed Sep 25 10:10:16 2019 +0200
+++ b/src/pyams_default_theme/shared/view/portlet/interfaces.py	Wed Sep 25 10:27:19 2019 +0200
@@ -10,11 +10,12 @@
 # FOR A PARTICULAR PURPOSE.
 #
 
-__docformat__ = 'restructuredtext'
+from zope.interface import Interface
+from zope.schema import Bool, Choice, Int
+from zope.schema.vocabulary import SimpleTerm, SimpleVocabulary
 
-from zope.interface import Interface
-from zope.schema import Bool, Int, Choice
-from zope.schema.vocabulary import SimpleVocabulary, SimpleTerm
+
+__docformat__ = 'restructuredtext'
 
 from pyams_default_theme import _
 
@@ -33,7 +34,8 @@
     """View items portlet vertical renderer settings interface"""
 
     display_illustrations = Bool(title=_("Display illustrations?"),
-                                 description=_("If 'no', view contents will not display illustrations"),
+                                 description=_("If 'no', view contents will not display "
+                                               "illustrations"),
                                  required=True,
                                  default=True)
 
@@ -44,7 +46,8 @@
                                   default='pano')
 
     display_breadcrumbs = Bool(title=_("Display breadcrumbs?"),
-                               description=_("If 'no', view items breadcrumbs will not be displayed"),
+                               description=_("If 'no', view items breadcrumbs will not be "
+                                             "displayed"),
                                required=True,
                                default=True)
 
@@ -72,3 +75,29 @@
                                   vocabulary=VIEW_ITEMS_THUMBNAILS_VOCABULARY,
                                   required=True,
                                   default='portrait')
+
+
+class IViewItemsPortletSummaryRendererSettings(Interface):
+    """View items portlet summary renderer settings interface"""
+
+    display_illustrations = Bool(title=_("Display illustrations?"),
+                                 description=_("If 'no', view contents will not display "
+                                               "illustrations"),
+                                 required=True,
+                                 default=True)
+
+    thumbnails_selection = Choice(title=_("Thumbnails selection"),
+                                  description=_("Selection used to display images thumbnails"),
+                                  vocabulary=VIEW_ITEMS_THUMBNAILS_VOCABULARY,
+                                  required=True,
+                                  default='pano')
+
+    paginate = Bool(title=_("Paginate?"),
+                    description=_("If 'no', results pagination will be disabled"),
+                    required=True,
+                    default=True)
+
+    page_size = Int(title=_("Page size"),
+                    description=_("Number of items per page, if pagination is enabled"),
+                    required=False,
+                    default=9)