Update app.py

app.py

@@ -6,8 +6,11 @@ import time
 
 def compress_image(image, format='webp', quality=85):
     try:
+        # Korrektur: Wandle 'jpg' in 'jpeg' um
+        save_format = 'jpeg' if format.lower() == 'jpg' else format
+        
         img_byte_arr = io.BytesIO()
-        image.save(img_byte_arr, format=format.upper(), quality=quality)
+        image.save(img_byte_arr, format=save_format.upper(), quality=quality)
         img_byte_arr.seek(0)
         return Image.open(img_byte_arr)
     except Exception as e:
@@ -28,6 +31,7 @@ def main():
             
             # Aktuelles Format ermitteln
             current_format = original_image.format.lower() if original_image.format else uploaded_file.name.split('.')[-1].lower()
+            current_format = 'jpeg' if current_format == 'jpg' else current_format
             
             st.subheader("Originalbild")
             st.image(original_image, caption=f"Ursprüngliches Bild ({current_format.upper()})")
@@ -69,8 +73,11 @@ def main():
                     time.sleep(0.5)
                     
                     if optimized_image:
+                        # Korrektur: Speichern mit korrektem Format
+                        save_format = 'jpeg' if target_format.lower() == 'jpg' else target_format
+                        
                         img_byte_arr = io.BytesIO()
-                        optimized_image.save(img_byte_arr, format=target_format.upper(), quality=compression_quality)
+                        optimized_image.save(img_byte_arr, format=save_format.upper(), quality=compression_quality)
                         img_byte_arr.seek(0)
                         
                         progress_bar.progress(100)