1 files changed, 10 insertions, 0 deletions
diff --git a/app/serializers/activitypub/note_serializer.rb b/app/serializers/activitypub/note_serializer.rb
index e2d2b6bec..a06cd17d4 100644
--- a/app/serializers/activitypub/note_serializer.rb
+++ b/app/serializers/activitypub/note_serializer.rb
@@ -172,6 +172,8 @@ class ActivityPub::NoteSerializer < ActivityPub::Serializer
     attributes :type, :media_type, :url, :name, :blurhash
     attribute :focal_point, if: :focal_point?
 
+    has_one :icon, serializer: ActivityPub::ImageSerializer, if: :thumbnail?
+
     def type
       'Document'
     end
@@ -195,6 +197,14 @@ class ActivityPub::NoteSerializer < ActivityPub::Serializer
     def focal_point
       [object.file.meta['focus']['x'], object.file.meta['focus']['y']]
     end
+
+    def icon
+      object.thumbnail
+    end
+
+    def thumbnail?
+      object.thumbnail.present?
+    end
   end
 
   class MentionSerializer < ActivityPub::Serializer