diff --git a/backend/api/posts/serializers.py b/backend/api/posts/serializers.py
index 3f63d2c..1f49a06 100644
--- a/backend/api/posts/serializers.py
+++ b/backend/api/posts/serializers.py
@@ -50,15 +50,11 @@ class PostPreviewSerializer(serializers.ModelSerializer):
         return [{"slug": i.slug, "name": i.name} for i in obj.category.all()]
 
     def get_creator(self, obj: PostModel) -> Dict[str, Optional[str]]:
-        avatar_url = (
-            reverse("serve_file", args=[obj.creator.avatar.hash_blake3])
-            if obj.creator.avatar
-            else None
-        )
         return {
             "slug": obj.creator.slug,
             "name": obj.creator.name,
-            "avatar": avatar_url,
+            "avatar": obj.creator.avatar.hash_blake3 if obj.creator.avatar else None,
+            "blur_hash": obj.creator.avatar.blur_hash if obj.creator.avatar else None,
         }
 
     def get_date(self, obj: PostModel) -> Dict[str, str]:
@@ -74,7 +70,8 @@ class PostPreviewSerializer(serializers.ModelSerializer):
             data.append(
                 {
                     "type": i.file_type,
-                    "src": reverse("serve_file", args=[i.hash_blake3]),
+                    "hash": i.hash_blake3,
+                    "blur_hash": i.blur_hash,
                 }
             )
         return data
@@ -140,11 +137,10 @@ class PostSerializer(serializers.ModelSerializer):
         }
 
     def get_creator(self, obj) -> Dict[str, Optional[str]]:
-        avatar_url = obj.creator.avatar.file.url if obj.creator.avatar else None
         return {
             "slug": obj.creator.slug,
             "name": obj.creator.name,
-            "avatar": avatar_url,
+            "avatar": obj.creator.avatar.hash_blake3 if obj.creator.avatar else None,
         }
 
     def get_tags(self, obj) -> List[str]:
@@ -161,6 +157,10 @@ class PostSerializer(serializers.ModelSerializer):
         data = []
         for i in obj.files.all():
             data.append(
-                {"type": i.file_type, "mimetype": i.mimetype, "src": i.file.url}
+                {
+                    "type": i.file_type,
+                    "mimetype": i.mimetype,
+                    "hash": i.hash_blake3,
+                }
             )
         return data