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app.py

@@ -1874,7 +1874,7 @@ with gr.Blocks(title="Z Image Turbo", css=css, theme=dark_theme) as demo:
                     gen_btn = gr.Button("Generate", variant="primary", size="lg")
                 
                 with gr.Column(scale=3):
-                    gen_output = gr.Image(label="Generated Image", type="pil", interactive=False, height=512)
+                    gen_output = gr.Image(label="Generated Image", type="pil", interactive=False, height=512, format="png")
                     gen_polished_prompt = gr.HTML(label="Status", value="")
                     gen_seed_out = gr.Number(label="Seed Used", interactive=False)
                     with gr.Row():
@@ -1951,7 +1951,7 @@ with gr.Blocks(title="Z Image Turbo", css=css, theme=dark_theme) as demo:
                     trans_btn = gr.Button("Transform", variant="primary", size="lg")
                 
                 with gr.Column(scale=3):
-                    trans_output = gr.Image(label="Transformed Image", type="pil", interactive=False, height=512)
+                    trans_output = gr.Image(label="Transformed Image", type="pil", interactive=False, height=512, format="png")
                     trans_polished_prompt = gr.HTML(label="Status", value="")
                     trans_seed_out = gr.Number(label="Seed Used", interactive=False)
                     with gr.Row():