Update app.py

app.py

@@ -34,14 +34,11 @@ check_write_permission(OUTPUT_DIR)
 # PDF轉圖片（使用 PyMuPDF）
 def pdf_to_images(pdf_file):
     try:
+        doc = fitz.open(pdf_file.name)  # 直接使用暫存檔案路徑
         image_paths = []
-        with tempfile.NamedTemporaryFile(delete=False, suffix=".pdf") as tmp_pdf:
-            tmp_pdf.write(pdf_file.read())
-            tmp_pdf.flush()
-            doc = fitz.open(tmp_pdf.name)
 
         for i, page in enumerate(doc, start=1):
-            pix = page.get_pixmap(matrix=fitz.Matrix(2, 2))  # 高解析度
+            pix = page.get_pixmap(matrix=fitz.Matrix(2, 2))
             img_path = os.path.join(FG_DIR, f"page_{i:03d}.jpg")
             pix.save(img_path)
             image_paths.append(img_path)