diff --git a/projects/web_api/app.py b/projects/web_api/app.py
index 8ad230f3..b576a783 100644
--- a/projects/web_api/app.py
+++ b/projects/web_api/app.py
@@ -164,21 +164,21 @@ async def pdf_parse(
     Execute the process of converting PDF to JSON and MD, outputting MD and JSON files
     to the specified directory.
 
-    :param pdf_file: The PDF file to be parsed. Must not be specified together with
-        `pdf_path`
-    :param pdf_path: The path to the PDF file to be parsed. Must not be specified
-        together with `pdf_file`
-    :param parse_method: Parsing method, can be auto, ocr, or txt. Default is auto. If
-        results are not satisfactory, try ocr
-    :param is_json_md_dump: Whether to write parsed data to .json and .md files. Default
-        to False. Different stages of data will be written to different .json files (3
-        in total), md content will be saved to .md file
-    :param output_dir: Output directory for results. A folder named after the PDF file
-        will be created to store all results
-    :param return_layout: Whether to return parsed PDF layout. Default to False
-    :param return_info: Whether to return parsed PDF info. Default to False
-    :param return_content_list: Whether to return parsed PDF content list. Default to
-        False
+    Args:
+        pdf_file: The PDF file to be parsed. Must not be specified together with
+            `pdf_path`
+        pdf_path: The path to the PDF file to be parsed. Must not be specified together
+            with `pdf_file`
+        parse_method: Parsing method, can be auto, ocr, or txt. Default is auto. If
+            results are not satisfactory, try ocr
+        is_json_md_dump: Whether to write parsed data to .json and .md files. Default
+            to False. Different stages of data will be written to different .json files
+            (3 in total), md content will be saved to .md file
+        output_dir: Output directory for results. A folder named after the PDF file
+            will be created to store all results
+        return_layout: Whether to return parsed PDF layout. Default to False
+        return_info: Whether to return parsed PDF info. Default to False
+        return_content_list: Whether to return parsed PDF content list. Default to False
     """
     try:
         if (pdf_file is None and pdf_path is None) or (