diff --git a/archivist/utils/strings.py b/archivist/utils/strings.py
index dee7170..6d84e9f 100644
--- a/archivist/utils/strings.py
+++ b/archivist/utils/strings.py
@@ -2,10 +2,16 @@
 
 import re
 
-def get_urls(string):
-    '''
-    A function that returns all URLs from a string.
-    '''
+def get_urls(string:str = None) -> list:
+    """
+    Extracts URLs from a given string using regular expressions.
+
+    Parameters:
+    string (str): The input string from which URLs need to be extracted.
+
+    Returns:
+    list: A list of URLs extracted from the input string.
+    """
     regex = re.compile(
         r'((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[.\!\/\\w]*))?)',
         re.IGNORECASE)