Update app.py

app.py

@@ -204,14 +204,28 @@ def download_pdf(patent_number):
         st.error(f"Failed to download patent PDF: {e}")
         st.stop()
 
-def preview_pdf(pdf_path):
-    """Generate and display the first page of the PDF as an image."""
+def preview_pdf(pdf_path, scale_factor=0.5):
+    """
+    Generate and resize the first page of the PDF for a compact preview.
+    Args:
+        pdf_path (str): Path to the PDF file.
+        scale_factor (float): Factor to reduce the image size (default is 0.5).
+    Returns:
+        str: Path to the resized image preview.
+    """
     try:
         doc = fitz.open(pdf_path)  # Open PDF
-        first_page = doc[0]  # Extract the first page
-        pix = first_page.get_pixmap()  # Render page to a Pixmap (image)
-        temp_image_path = os.path.join(tempfile.gettempdir(), "pdf_preview.png")
-        pix.save(temp_image_path)  # Save the image temporarily
+        first_page = doc[0]  # Get the first page
+        pix = first_page.get_pixmap()  # Render page to Pixmap (image)
+
+        # Resize image using scale factor
+        new_width = int(pix.width * scale_factor)
+        new_height = int(pix.height * scale_factor)
+        resized_pix = fitz.Pixmap(pix, new_width, new_height)
+
+        # Save resized image temporarily
+        temp_image_path = os.path.join(tempfile.gettempdir(), "pdf_preview_resized.png")
+        resized_pix.save(temp_image_path)
         return temp_image_path
     except Exception as e:
         st.error(f"Error generating PDF preview: {e}")
@@ -268,10 +282,10 @@ if __name__ == "__main__":
         # Generate PDF preview only if not already displayed
         if not st.session_state.get("pdf_preview_displayed", False):
             st.write("🖼️ Generating PDF preview...")
-            preview_image_path = preview_pdf(pdf_path)
+            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_container_width=True)
+                st.image(preview_image_path, caption="First Page Preview", use_column_width=False)
                 st.session_state["pdf_preview_displayed"] = True
             else:
                 st.warning("Failed to generate PDF preview.")