You put a `ping` attribute on a link, and when the user follows the link, the browser sends a request to the ping URL notifying it of the action.
Firefox disables it by default, which doesn’t seem like much of a privacy win considering JavaScript is enabled by default and can polyfill this functionality.
https://html.spec.whatwg.org/multipage/links.html#hyperlink-...
You put a `ping` attribute on a link, and when the user follows the link, the browser sends a request to the ping URL notifying it of the action.
Firefox disables it by default, which doesn’t seem like much of a privacy win considering JavaScript is enabled by default and can polyfill this functionality.