Update app.py

app.py

@@ -288,7 +288,7 @@ if __name__ == "__main__":
             preview_image_path = preview_pdf(pdf_path, scale_factor=0.5)  # Added scale_factor
             if preview_image_path:
                 st.session_state.pdf_preview = preview_image_path
-                st.image(preview_image_path, caption="First Page Preview", use_column_width=False)
+                st.image(preview_image_path, caption="First Page Preview", use_container_width=False)
                 st.session_state["pdf_preview_displayed"] = True
             else:
                 st.warning("Failed to generate PDF preview.")