rel=noopener
The noopener
keyword for the rel
attribute of the <a>
, <area>
, and <form>
elements instructs the browser to navigate to the target resource without granting the new browsing context access to the document that opened it — by not setting the Window.opener
property on the opened window (it returns null
).
This is especially useful when opening untrusted links, in order to ensure they cannot tamper with the originating document via the Window.opener
property (see About rel=noopener for more details), while still providing the Referer
HTTP header (unless noreferrer
is used as well).
Note that when noopener
is used, nonempty target names other than _top
, _self
, and _parent
are all treated like _blank
in terms of deciding whether to open a new window/tab.
Note: Setting target="_blank"
on <a>
elements now implicitly provides the same rel
behavior as setting rel="noopener"
which does not set window.opener
. See browser compatibility for support status.
Specifications
Specification |
---|
HTML Standard # link-type-noopener |
Browser compatibility
BCD tables only load in the browser