Update app.py

app.py

@@ -87,23 +87,23 @@ class ImageResizer:
             resized_image = image.copy()
             new_width, new_height = resized_image.size
         
-        # Create canvas with padding
-        canvas = Image.new('RGB', (width, height), (255, 255, 255))
-        
-        # Handle PNG background color
-        if is_png or (hasattr(image, 'format') and image.format == 'PNG'):
-            if png_bg_option == "auto":
-                bg_color = self.get_background_color(image)
-            elif png_bg_option == "black":
-                bg_color = (0, 0, 0)
-            elif png_bg_option == "white":
-                bg_color = (255, 255, 255)
-            elif png_bg_option == "custom" and custom_color:
-                bg_color = custom_color
-            else:
-                bg_color = (255, 255, 255)
-            
-            canvas = Image.new('RGB', (width, height), bg_color)
+        # Determine background color based on user selection
+        if png_bg_option == "black":
+            bg_color = (0, 0, 0)
+        elif png_bg_option == "white":
+            bg_color = (255, 255, 255)
+        elif png_bg_option == "custom" and custom_color:
+            bg_color = custom_color
+        elif png_bg_option == "auto" and (is_png or (hasattr(image, 'format') and image.format == 'PNG')):
+            bg_color = self.get_background_color(image)
+        else:
+            bg_color = (255, 255, 255)  # Default white
+        
+        # Create canvas with the determined background color
+        canvas = Image.new('RGB', (width, height), bg_color)
+        
+        # Debug info
+        print(f"Debug: Background color applied: {bg_color}, PNG option: {png_bg_option}")
         
         # Calculate position to center the image
         x = (width - new_width) // 2
@@ -157,8 +157,11 @@ def process_single_image(image, width, height, maintain_aspect, png_bg_option, c
         
         # For PNG background selection, we should always apply the background choice
         # regardless of original format when PNG options are selected
-        if png_bg_option != "auto":
-            is_png = True  # Force PNG treatment for non-auto options
+        if png_bg_option in ["black", "white", "custom"]:
+            is_png = True  # Force PNG treatment for specific background choices
+        
+        # Debug info (will be removed in production)
+        print(f"Debug: PNG detection - format: {getattr(pil_image, 'format', 'None')}, mode: {pil_image.mode}, is_png: {is_png}, bg_option: {png_bg_option}")
         
         # Resize image
         resized_image = resizer.resize_image(
@@ -208,8 +211,8 @@ def process_folder_images(files, width, height, maintain_aspect, png_bg_option,
                 
                 # For PNG background selection, we should always apply the background choice
                 # regardless of original format when PNG options are selected
-                if png_bg_option != "auto":
-                    is_png = True  # Force PNG treatment for non-auto options
+                if png_bg_option in ["black", "white", "custom"]:
+                    is_png = True  # Force PNG treatment for specific background choices
                 
                 # Resize image
                 resized_image = resizer.resize_image(
@@ -276,8 +279,8 @@ def process_zip_file(zip_file, width, height, maintain_aspect, png_bg_option, cu
                             
                             # For PNG background selection, we should always apply the background choice
                             # regardless of original format when PNG options are selected
-                            if png_bg_option != "auto":
-                                is_png = True  # Force PNG treatment for non-auto options
+                            if png_bg_option in ["black", "white", "custom"]:
+                                is_png = True  # Force PNG treatment for specific background choices
                             
                             # Resize image
                             resized_image = resizer.resize_image(