diff --git a/dataframe_image/_screenshot.py b/dataframe_image/_screenshot.py
index 65cb3ed..c963c51 100644
--- a/dataframe_image/_screenshot.py
+++ b/dataframe_image/_screenshot.py
@@ -163,6 +163,8 @@ def finalize_image(self, img):
         return img_str
 
     def run(self, html):
+        self.ss_width = 1400
+        self.ss_height = 900
         self.html = self.css + html
         img = self.take_screenshot()
         img_str = self.finalize_image(img)