diff --git a/README.md b/README.md
index e11e381..66bd0a2 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 passkey types your credentials upon button press.
 
-<img src="picture/v2_front.webp" title="front" height="250"/>
+<img src="picture/v2_front.jpg" title="front" height="250"/>
 .
-<img src="picture/v2_back.webp" title="back" height="250"/>
+<img src="picture/v2_back.jpg" title="back" height="250"/>
 
 purpose
 =======