diff --git a/README.md b/README.md
index 3af4cee..6f9c818 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,10 @@ if __name__ == '__main__':
             'avatar_default',
             '/symbols/'
         ],
+        image_root_urls=[
+            'https://mytestsite.com/photos/',
+            'https://mytestsite.com/git/',
+        ],
         headers={'User-Agent': 'Crawler'},
         # TZ offset in hours
         timezone_offset=3,
diff --git a/pysitemap/__init__.py b/pysitemap/__init__.py
index 9626064..2f5bdbd 100644
--- a/pysitemap/__init__.py
+++ b/pysitemap/__init__.py
@@ -5,8 +5,8 @@ from pysitemap.base_crawler import Crawler
 
 def crawler(
     root_url, out_file, out_format='xml',
-    maxtasks=10, exclude_urls=[], exclude_imgs=[], verifyssl=True,
-    headers=None, timezone_offset=0, changefreq=None,
+    maxtasks=10, exclude_urls=list, exclude_imgs=list, image_root_urls=list,
+    verifyssl=True, headers=None, timezone_offset=0, changefreq=None,
     priorities=None):
     """
     run crowler
@@ -16,6 +16,7 @@ def crawler(
     :param maxtasks: max count of tasks
     :param exclude_urls: excludable url paths
     :param exclude_imgs: excludable img url paths
+    :param image_root_urls: recognized image root urls on the domain
     :param verifyssl: verify website certificate?
     :param headers: Send these headers in every request
     :param timezone_offset: timezone offset for lastmod tags
@@ -26,7 +27,8 @@ def crawler(
     loop = asyncio.get_event_loop()
 
     c = Crawler(root_url, out_file=out_file, out_format=out_format,
-                maxtasks=maxtasks, exclude_urls=exclude_urls, exclude_imgs=exclude_imgs, verifyssl=verifyssl,
+                maxtasks=maxtasks, exclude_urls=exclude_urls, exclude_imgs=exclude_imgs,
+                image_root_urls=image_root_urls, verifyssl=verifyssl,
                 headers=headers, timezone_offset=timezone_offset,
                 changefreq=changefreq, priorities=priorities)