diff --git a/files/en-us/web/api/window/open/index.md b/files/en-us/web/api/window/open/index.md
index 1725b54cb69a447..93b26f82f51b797 100644
--- a/files/en-us/web/api/window/open/index.md
+++ b/files/en-us/web/api/window/open/index.md
@@ -87,7 +87,8 @@ function openRequestedPopup() {
   windowObjectReference = window.open("http://www.cnn.com/", "CNN_WindowName", windowFeatures);
 }
 ```
-
+In Firefox on desktop, calling the function above creates a new browser window with a non-editable address bar and without the navigation buttons:
+![CNN's home page shown in a Firefox window with a non-editable address bar and without navigation buttons](popup.png)
 ```js
 var windowObjectReference;
 
diff --git a/files/en-us/web/api/window/open/popup.png b/files/en-us/web/api/window/open/popup.png
new file mode 100644
index 000000000000000..1e423ee1af4af4d
Binary files /dev/null and b/files/en-us/web/api/window/open/popup.png differ