What should a page receive a Didn't Load flag for?

A page should receive a Didn't Load flag when it is completely blank and contains no content. This designation indicates that users are not able to engage with the page at all, as there is nothing displayed for them to interact with or view. A blank page fails to meet the basic expectation of delivering any information or experience to the user, therefore it is recognized as problematic in terms of loading and functionality.

In contrast, a page that is fully functional and responsive provides a positive user experience, regardless of the specific content. Similarly, a page displaying a customized 404 error message, while not ideally functional, does offer some feedback to the user by explaining that the content they are looking for is not available. A page with multimedia content can also be considered functional, as the presence of such content indicates that the page is loading elements for user interaction, even if the experience may vary based on media loading times or formats.