diff --git a/generic_rag/parsers/parser.py b/generic_rag/parsers/parser.py
index eaf885a..36f0866 100644
--- a/generic_rag/parsers/parser.py
+++ b/generic_rag/parsers/parser.py
@@ -27,6 +27,11 @@ def code_handler(element: Tag) -> str:
 
 
 def add_urls(vector_store: Chroma, urls: list[str], chunk_size: int) -> None:
+    """
+    Adds a list of URLs as vector documents to the provided vector store.
+
+    The URL's will be fetched and split into chunks of text with the provided chunk size.
+    """
     all_splits = []
     for url in urls:
         if len(vector_store.get(where={"source": url}, limit=1)["ids"]) > 0:
@@ -72,6 +77,11 @@ def add_pdf_files(
     add_start_index: bool,
     unstructerd: bool,
 ) -> None:
+    """
+    Adds a list of PDF files as vector documents to the provided vector store.
+
+    The PDF file will be parsed per page and split into chunks of text with the provided chunk size and overlap.
+    """
     pdf_files = get_all_local_pdf_files(file_paths)
 
     new_pdfs = []