diff --git a/autogpt_platform/backend/backend/blocks/ai_image_customizer.py b/autogpt_platform/backend/backend/blocks/ai_image_customizer.py
index 3ab8acb31da4..83178e924d26 100644
--- a/autogpt_platform/backend/backend/blocks/ai_image_customizer.py
+++ b/autogpt_platform/backend/backend/blocks/ai_image_customizer.py
@@ -1,3 +1,4 @@
+import asyncio
 from enum import Enum
 from typing import Literal
 
@@ -19,7 +20,7 @@
     SchemaField,
 )
 from backend.integrations.providers import ProviderName
-from backend.util.file import MediaFileType
+from backend.util.file import MediaFileType, store_media_file
 
 
 class GeminiImageModel(str, Enum):
@@ -27,6 +28,20 @@ class GeminiImageModel(str, Enum):
     NANO_BANANA_PRO = "google/nano-banana-pro"
 
 
+class AspectRatio(str, Enum):
+    MATCH_INPUT_IMAGE = "match_input_image"
+    ASPECT_1_1 = "1:1"
+    ASPECT_2_3 = "2:3"
+    ASPECT_3_2 = "3:2"
+    ASPECT_3_4 = "3:4"
+    ASPECT_4_3 = "4:3"
+    ASPECT_4_5 = "4:5"
+    ASPECT_5_4 = "5:4"
+    ASPECT_9_16 = "9:16"
+    ASPECT_16_9 = "16:9"
+    ASPECT_21_9 = "21:9"
+
+
 class OutputFormat(str, Enum):
     JPG = "jpg"
     PNG = "png"
@@ -69,6 +84,11 @@ class Input(BlockSchemaInput):
             default=[],
             title="Input Images",
         )
+        aspect_ratio: AspectRatio = SchemaField(
+            description="Aspect ratio of the generated image",
+            default=AspectRatio.MATCH_INPUT_IMAGE,
+            title="Aspect Ratio",
+        )
         output_format: OutputFormat = SchemaField(
             description="Format of the output image",
             default=OutputFormat.PNG,
@@ -92,6 +112,7 @@ def __init__(self):
                 "prompt": "Make the scene more vibrant and colorful",
                 "model": GeminiImageModel.NANO_BANANA,
                 "images": [],
+                "aspect_ratio": AspectRatio.MATCH_INPUT_IMAGE,
                 "output_format": OutputFormat.JPG,
                 "credentials": TEST_CREDENTIALS_INPUT,
             },
@@ -116,11 +137,25 @@ async def run(
         **kwargs,
     ) -> BlockOutput:
         try:
+            # Convert local file paths to Data URIs (base64) so Replicate can access them
+            processed_images = await asyncio.gather(
+                *(
+                    store_media_file(
+                        graph_exec_id=graph_exec_id,
+                        file=img,
+                        user_id=user_id,
+                        return_content=True,
+                    )
+                    for img in input_data.images
+                )
+            )
+
             result = await self.run_model(
                 api_key=credentials.api_key,
                 model_name=input_data.model.value,
                 prompt=input_data.prompt,
-                images=input_data.images,
+                images=processed_images,
+                aspect_ratio=input_data.aspect_ratio.value,
                 output_format=input_data.output_format.value,
             )
             yield "image_url", result
@@ -133,12 +168,14 @@ async def run_model(
         model_name: str,
         prompt: str,
         images: list[MediaFileType],
+        aspect_ratio: str,
         output_format: str,
     ) -> MediaFileType:
         client = ReplicateClient(api_token=api_key.get_secret_value())
 
         input_params: dict = {
             "prompt": prompt,
+            "aspect_ratio": aspect_ratio,
             "output_format": output_format,
         }