Update app.py

app.py

@@ -100,9 +100,10 @@ def merge_pdfs(reordered_pages, uploaded_file):
       page = doc.load_page(page_data['page_index'])
       page.set_rotation(page_data['rotation'])
       temp_pdf_page = BytesIO()
-      page.get_pixmap().writePNG(temp_pdf_page)
+      page.get_pixmap(alpha=False).save(temp_pdf_page, "png")
       temp_pdf_page.seek(0)
       merger.append(temp_pdf_page)
+
     output_filename = "combined_document.pdf"
     with open(output_filename, "wb") as output_file:
         merger.write(output_file)
@@ -117,6 +118,10 @@ def download_file(output_file, file_name, mime_type):
             mime=mime_type,
         )
 
+def generate_user_filename(filename, file_type):
+    """Generates a filename based on user input and file type."""
+    return f"{filename}{file_type}"
+
 def generate_unique_filename(original_filename, suffix, file_type):
     """Generates a unique filename based on date, time, and original filename."""
     now = datetime.now()
@@ -241,7 +246,7 @@ if selection == "PDF Document Separator":
               with st.spinner("Creating PDF..."):
                   output_file = merge_pdfs(st.session_state.target_pages, st.session_state.uploaded_pdf)
                   st.success("PDF created successfully!")
-                  download_file(output_file, generate_unique_filename(st.session_state.pdf_filename, "", ".pdf"), "application/pdf")
+                  download_file(output_file, generate_user_filename(st.session_state.pdf_filename, ".pdf"), "application/pdf")
                   os.remove(output_file)
             st.text_input("Enter output transcription filename", key='transcribe_filename_input', value = st.session_state.transcribe_filename)
             if st.button("Transcribe PDF"):