diff --git a/film2trello/cli.py b/film2trello/cli.py
index 1ea61bf..1263bbd 100644
--- a/film2trello/cli.py
+++ b/film2trello/cli.py
@@ -91,10 +91,12 @@ def bot(
 @board_id_option
 @trello_key_option
 @trello_token_option
+@click.option("--sort/--no-sort", "sort_cards", default=True)
 def inbox(
     board_id: str,
     trello_key: str,
     trello_token: str,
+    sort_cards: bool,
 ) -> None:
     try:
         asyncio.run(
@@ -102,6 +104,7 @@ def inbox(
                 board_id,
                 trello_key=trello_key,
                 trello_token=trello_token,
+                sort_cards=sort_cards,
             )
         )
     except HTTPStatusError as exc:
diff --git a/film2trello/core.py b/film2trello/core.py
index abc9f4a..9982ac3 100644
--- a/film2trello/core.py
+++ b/film2trello/core.py
@@ -152,6 +152,7 @@ async def process_inbox(
     scraper: httpx.AsyncClient,
     trello_api: httpx.AsyncClient,
     board_id: str,
+    sort_cards: bool = True,
 ) -> None:
     inbox_list_id, archive_list_id = await trello.get_working_lists_ids(
         trello_api, board_id
@@ -197,10 +198,13 @@ async def process_inbox(
         else:
             logger.info("Card description doesn't contain CSFD.cz URL")
 
-    logger.info("Sorting cards")
-    for position, (card, _) in enumerate(sorted(index, key=sort_inbox_key), start=1):
-        logger.info(f"#{position}: {card['name']}")
-        await trello.update_card_position(trello_api, card["id"], position)
+    if sort_cards:
+        logger.info("Sorting cards")
+        for position, (card, _) in enumerate(sorted(index, key=sort_inbox_key), start=1):
+            logger.info(f"#{position}: {card['name']}")
+            await trello.update_card_position(trello_api, card["id"], position)
+    else:
+        logger.info("Skipping cards sorting")
 
 
 def sort_inbox_key(index_item: tuple[dict, Film]) -> tuple[int, int, str]:
diff --git a/film2trello/trello.py b/film2trello/trello.py
index 25637e2..9b0313c 100644
--- a/film2trello/trello.py
+++ b/film2trello/trello.py
@@ -288,9 +288,10 @@ def has_poster(attachments) -> bool:
 def create_thumbnail(
     image_bytes: bytes,
 ) -> tuple[Literal["poster.jpg"], BytesIO, Literal["image/jpeg"]]:
-    image = Image.open(image_bytes).convert("RGB")
-    image.thumbnail(THUMBNAIL_SIZE)
-    out_file = BytesIO()
-    image.save(out_file, "JPEG")
-    out_file.seek(0)
-    return ("poster.jpg", out_file, "image/jpeg")
+    with Image.open(BytesIO(image_bytes)) as image:
+        image = image.convert("RGB")
+        image.thumbnail(THUMBNAIL_SIZE)
+        out_file = BytesIO()
+        image.save(out_file, "JPEG")
+        out_file.seek(0)
+        return ("poster.jpg", out_file, "image/jpeg")