diff --git a/other/transfer_images_minio_subfolder.py b/other/transfer_images_minio_subfolder.py
index c531892..cb5305e 100644
--- a/other/transfer_images_minio_subfolder.py
+++ b/other/transfer_images_minio_subfolder.py
@@ -27,6 +27,7 @@ if __name__ == '__main__':
         # get image from minio
         buffer = get(
             client=minio_client,
+            bucket_name=BUCKET_NAME,
             object_name=obj.object_name,
         )
         # convert data to image
diff --git a/other/transfer_images_mongo_minio.py b/other/transfer_images_mongo_minio.py
index b8d38c9..7e8f5cc 100644
--- a/other/transfer_images_mongo_minio.py
+++ b/other/transfer_images_mongo_minio.py
@@ -3,16 +3,15 @@
 from __future__ import annotations
 
 import logging
-from io import BytesIO
 from pathlib import Path
 
 from bson import ObjectId
 from dotenv import load_dotenv
 from pymongo.collection import Collection
 
-from shared.datastore import connect_minio, put
+from shared.datastore import connect_minio, put_image
 from shared.mongodb import connect_mongodb
-from shared.mongodb.classes import VisualCommunication
+from shared.mongodb.src.classes import VisualCommunication
 from shared.utils import check_env, setup_logging
 from web_ui.src.main import NECESSARY_ENV_VAR_LIST
 
@@ -96,13 +95,14 @@ if __name__ == '__main__':
             logging.error('failed getting image from document: %s', doc_id)
             continue
         try:
-            # save image to buffer
-            buffer = BytesIO()
-            vis_com.image.save(buffer, 'png')  # type: ignore
+            # get image
+            image = vis_com.get_image(
+                minio_client=minio_client,
+            )
             # put buffer in minio
-            object_name = put(
+            object_name = put_image(
                 client=minio_client,
-                buffer=buffer,
+                image=image,
             )
         except Exception as exc:
             logging.debug(exc)
diff --git a/shared/mongodb/src/classes/visual_communication.py b/shared/mongodb/src/classes/visual_communication.py
index 9c0383f..a21d0b4 100755
--- a/shared/mongodb/src/classes/visual_communication.py
+++ b/shared/mongodb/src/classes/visual_communication.py
@@ -12,8 +12,8 @@ from PIL import Image
 from pydantic import BaseModel, ConfigDict
 from pymongo.collection import Collection
 
-from shared.datastore import get, put
-from shared.mongodb.classes import ModelData
+from shared.datastore import get_image, put_image
+from shared.mongodb.src.classes import ModelData
 
 
 class VisualCommunication(BaseModel):
@@ -39,11 +39,9 @@ class VisualCommunication(BaseModel):
         """Upload image to MinIO and return MD5 checksum of hashed image."""
         assert isinstance(image, Image.Image)
         assert isinstance(minio_client, Minio)
-        buffer = BytesIO()
-        image.save(buffer, 'png')
-        object_name = put(
+        object_name = put_image(
             client=minio_client,
-            buffer=buffer,
+            image=image,
         )
         return object_name
 
@@ -92,14 +90,12 @@ class VisualCommunication(BaseModel):
     def get_image(self, minio_client: Minio) -> Image.Image:
         """Load image data from minio."""
         assert isinstance(minio_client, Minio)
-        # get buffer from minio
-        buffer = get(
+        # get image from minio
+        image = get_image(
             client=minio_client,
             object_name=self.object_name,
         )
-        # convert data to image
-        im = Image.open(buffer)
-        return im
+        return image
 
     def save_to_mongo(self, collection: Collection) -> None:
         """Save self as document in MongoDB."""
diff --git a/web_ui/src/app/init_app.py b/web_ui/src/app/init_app.py
index 1187e73..897aa69 100644
--- a/web_ui/src/app/init_app.py
+++ b/web_ui/src/app/init_app.py
@@ -14,8 +14,8 @@ from pymongo.collection import Collection
 
 from shared.datastore import delete as delete_from_minio
 from shared.mongodb import count_documents, get_visual_communication, upsert_annotation
-from shared.mongodb.classes import ModelData, VisualCommunication
-from shared.mongodb.exceptions import NoDocumentFoundException
+from shared.mongodb.src.classes import ModelData, VisualCommunication
+from shared.mongodb.src.exceptions import NoDocumentFoundException
 
 from .layout import app_layout
 
@@ -146,8 +146,10 @@ def init_app(
                     logging.debug(exc)
                     failed_filename_list.append(filename)
                     # remove document from minio
+                    bucket_name = os.getenv('MINIO_BUCKET_NAME', default='')
                     delete_from_minio(
                         client=minio_client,
+                        bucket_name=bucket_name,
                         object_name=vis_com.object_name,
                     )
             assert (