diff --git a/backend/invoke_ai_web_server.py b/backend/invoke_ai_web_server.py
index 9427490c38..ea9d6a6806 100644
--- a/backend/invoke_ai_web_server.py
+++ b/backend/invoke_ai_web_server.py
@@ -1509,7 +1509,7 @@ def save_thumbnail(
     image: ImageType,
     filename: str,
     path: str,
-    size: int = 128,
+    size: int = 256,
 ) -> str:
     base_filename = os.path.splitext(filename)[0]
     thumbnail_path = os.path.join(path, base_filename + ".webp")