Update app.py

app.py

@@ -49,7 +49,7 @@ with gr.Blocks() as bl:
             preview_btn = gr.Button("Generate Preview")
             size_input = gr.Textbox(label="Output Size (width x height)", placeholder="e.g., 800x600 (optional, overrides crop)")
         with gr.Column():
-            preview_output = gr.Image(type='pil', label="Preview (Draw a box to crop if no size specified)", interactive=True, tool="sketch", height=800)
+            preview_output = gr.Image(type='pil', label="Preview (Draw a box to crop if no size specified)", interactive=True, height=800)
             crop_btn = gr.Button("Convert")
             final_output = gr.Image(type='pil', label="Final PNG", height=800)
             download_btn = gr.File(label="Download Final PNG")