Right now, anyone can display my website with an <iframe> tag.

See example:

<iframe src="http://example.com/" width="1000" height="1800" frameborder="0" scrolling="no"></iframe>

How can I block a website from doing that?

I prefer use code than a plugin, Thank you, Shay.


1 Answer 1


WordPress has a built-in function to send the X-Frame-Options header: send_frame_options_header(). It is used by default on the login and admin pages.

If you want to enable it always, just add it for front end views:

add_action( 'template_redirect', 'send_frame_options_header' );

But … it doesn't send Content-Security-Policy headers. If you want to have a more complete solution and disable any frame, even from the same site, you can use:

function no_frame_headers()
    header( "X-Frame-Options: DENY", true );
    header( "Content-Security-Policy: frame-ancestors 'none'", true );

And then register that callback:

add_action( 'login_init',        'no_frame_headers', 1000 );
add_action( 'admin_init',        'no_frame_headers', 1000 );
add_action( 'template_redirect', 'no_frame_headers', 1000 );

This has to go into a plugin, of course.

  • does this options will still let me show my website on my website via iframe?
    – Shay S
    May 8, 2017 at 14:42
  • @ShayS Then you have to use frame-ancestors 'self' and X-Frame-Options: SAMEORIGIN.
    – fuxia
    May 8, 2017 at 14:47
  • thank you for responding! , what do you mean i have to use these? i need to add them to what you gave me?
    – Shay S
    May 8, 2017 at 18:11
  • @ShayS Yes, replace the parts in my code sample.
    – fuxia
    May 8, 2017 at 20:37

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