When using a Web Page Panel, Spotfire embeds the content in an iframe, Many websites, such as google.com, do not support embedding so nothing is rendered in the Spotfore client. As of 2023, tests have shown that
https://en.wikipedia.org/wiki/Main_Page will work to confirm that a connection to a website is possible as a test.
The reason for this is that many sites send an "X-Frame-Options: SAMEORIGIN" response header. This option prevents the browser from displaying iFrames that are not hosted on the same domain as the parent page for security reasons.
There are two possible directives for X-Frame-Options:
X-Frame-Options: DENY
The page cannot be displayed in a frame, regardless of the site attempting to do so.
X-Frame-Options: SAMEORIGIN
The page can only be displayed if all ancestor frames are same origin to the page itself.The Web Page Panel will only render data from websites that do not send this response header.