diff --git a/py4web/utils/form.py b/py4web/utils/form.py
index ebadf488..723018c2 100644
--- a/py4web/utils/form.py
+++ b/py4web/utils/form.py
@@ -1075,7 +1075,7 @@ def is_image(value):
         """
         if value:
             (_, extension) = os.path.splitext(value)
-            if extension in [".gif", ".png", ".jpg", ".jpeg", ".bmp"]:
+            if extension in [".gif", ".png", ".jpg", ".jpeg",".webp", ".bmp"]:
                 return True
         return False