Set all outputs in png format in `app_local.py`.

app_local.py

@@ -185,7 +185,7 @@ tab_image = gr.Interface(
         gr.Textbox(lines=1, placeholder="Type the resolution (`WxH`) you want, e.g., `1024x1024`. Higher resolutions can be much slower for inference.", label="Resolution"),
         gr.Radio(list(usage_to_weights_file.keys()), value='General', label="Weights", info="Choose the weights you want.")
     ],
-    outputs=gr.Image(label="BiRefNet's prediction", type="pil"),
+    outputs=gr.Image(label="BiRefNet's prediction", type="pil", format='png'),
     examples=examples,
     api_name="image",
     description=descriptions,
@@ -198,7 +198,7 @@ tab_text = gr.Interface(
         gr.Textbox(lines=1, placeholder="Type the resolution (`WxH`) you want, e.g., `1024x1024`. Higher resolutions can be much slower for inference.", label="Resolution"),
         gr.Radio(list(usage_to_weights_file.keys()), value='General', label="Weights", info="Choose the weights you want.")
     ],
-    outputs=gr.Image(label="BiRefNet's prediction", type="pil"),
+    outputs=gr.Image(label="BiRefNet's prediction", type="pil", format='png'),
     examples=examples_url,
     api_name="text",
     description=descriptions+'\nTab-URL is partially modified from https://huggingface.co/spaces/not-lain/background-removal, thanks to this great work!',