diff --git a/src/agenda_culturel/calendar.py b/src/agenda_culturel/calendar.py
index e9df9ff..c80a922 100644
--- a/src/agenda_culturel/calendar.py
+++ b/src/agenda_culturel/calendar.py
@@ -300,10 +300,10 @@ class CalendarList:
     def time_intervals_list_first(self):
         return self.time_intervals_list(True)
 
-    def export_to_ics(self):
+    def export_to_ics(self, request):
         from .models import Event
         events = [event for day in self.get_calendar_days().values() for event in day.events]
-        return Event.export_to_ics(events)
+        return Event.export_to_ics(events, request)
 
 
 class CalendarMonth(CalendarList):
diff --git a/src/agenda_culturel/models.py b/src/agenda_culturel/models.py
index 1e35bb8..cbaa76f 100644
--- a/src/agenda_culturel/models.py
+++ b/src/agenda_culturel/models.py
@@ -1646,7 +1646,7 @@ class Event(models.Model):
 
         return (dtstart <= e_dtstart <= dtend) or (e_dtstart <= dtstart <= e_dtend)
 
-    def export_to_ics(events):
+    def export_to_ics(events, request):
         cal = icalCal()
         # Some properties are required to be compliant
         cal.add("prodid", "-//My calendar product//example.com//")
@@ -1704,6 +1704,8 @@ class Event(models.Model):
             eventIcal.add(
                 "description", description + url
             )
+            if not event.local_image is None:
+                eventIcal.add('image', request.build_absolute_uri(event.local_image), parameters={'VALUE': 'URI'})
             eventIcal.add("location", event.exact_location or event.location)
 
             cal.add_component(eventIcal)
diff --git a/src/agenda_culturel/views.py b/src/agenda_culturel/views.py
index 4ced3d8..62ff3ee 100644
--- a/src/agenda_culturel/views.py
+++ b/src/agenda_culturel/views.py
@@ -13,6 +13,8 @@ from django.utils.safestring import mark_safe
 from django.utils.decorators import method_decorator
 from honeypot.decorators import check_honeypot
 from .utils import PlaceGuesser
+import hashlib
+from django.core.cache import cache
 
 
 from django.contrib.gis.geos import Point
@@ -711,7 +713,7 @@ def export_event_ical(request, year, month, day, pk):
     events = list()
     events.append(event)
 
-    cal = Event.export_to_ics(events)
+    cal = Event.export_to_ics(events, request)
 
     response = HttpResponse(content_type="text/calendar")
     response.content = cal.to_ical().decode("utf-8").replace("\r\n", "\n")
@@ -726,8 +728,12 @@ def export_ical(request):
 
     request = EventFilter.set_default_values(request)
     filter = EventFilter(request.GET, queryset=get_event_qs(request), request=request)
-    calendar = CalendarList(now + timedelta(days=-7), now + timedelta(days=+60), filter)
-    ical = calendar.export_to_ics()
+    id_cache = hashlib.md5(filter.get_url().encode("utf8")).hexdigest()
+    ical = cache.get(id_cache)
+    if not ical:
+        calendar = CalendarList(now + timedelta(days=-7), now + timedelta(days=+60), filter)
+        ical = calendar.export_to_ics(request)
+        cache.set(id_cache, ical, 3600) # 1 heure
 
     response = HttpResponse(content_type="text/calendar")
     response.content = ical.to_ical().decode("utf-8").replace("\r\n", "\n")