update

app.py

@@ -84,7 +84,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
     with gr.Tab("Image Generation"):
       with gr.Row():
           with gr.Column(scale=1):
-              prompt = gr.Textbox(label="Prompt", placeholder="Enter a prompt")
+              prompt = gr.Textbox(label="Prompt", placeholder="Enter a prompt", default="A photo of a macaw")
               with gr.Accordion("Advanced Settings", open=False):
                 resolution = gr.Radio(
                     ["512px", "1024px"], value="1024px", label="Resolution"
@@ -111,7 +111,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
     with gr.Tab("Image Understanding"):
         with gr.Row():
             with gr.Column(scale=1):
-                image_input = gr.Image(label="Upload Image", type="pil")
+                image_input = gr.Image(label="Upload Image", type="pil", value="https://raw.githubusercontent.com/csuhan/Tar/refs/heads/main/asset/dog_cat.jpg")
                 question_input = gr.Textbox(label="Instruction", value="Describe the image shortly.")
                 with gr.Row():
                     qa_btn = gr.Button("Generate")