Decription of behaviour without the `X-Frame-Options` header is missing

[doerwalter]

MDN URL

https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Frame-Options

What specific section or headline is this issue about?

No response

What information was incorrect, unhelpful, or incomplete?

The page is missing a description of the browser behaviour when the X-Frame-Options header is not present.

What did you expect to see?

An explanation of the behaviour when the X-Frame-Options header is not present.

Do you have any supporting links, references, or citations?

No response

Do you have anything more you want to share?

No response

MDN metadata

Page report details

• Folder: en-us/web/http/reference/headers/x-frame-options
• MDN URL: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Frame-Options
• GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/http/reference/headers/x-frame-options/index.md
• Last commit: 7f67789
• Document last modified: 2025-11-21T00:51:23.000Z