output image format changed to png

app.py

@@ -55,7 +55,7 @@ with gr.Blocks(css=css) as demo:
                                        info="Select the clothes type you wish to extract!")
 
             output_image = gr.Image(label="Extracted clothes", type='pil', height="400px", show_label=True,
-                                    show_download_button=True)
+                                    show_download_button=True, format="png")
 
         with gr.Row():
             submit_button = gr.Button("Submit", variant='primary', scale=1)