[walterbell]

iOS12 Shortcuts are a limited form of extension, they can parse JS from a web page and cause side effects. E.g.

- extract URL and download youtube video to camera roll

- move a running video out of browser into picture-in-picture mode for multitasking

Content (ad) blocking extensions are supported in Safari.

[ghostly_s]

Shortcuts can "parse JS from a web page"? Can you explain how that's possible? None of the examples you listed seem to involve direct access to page content.

[walterbell]

Here's the JS for PiP video, the shortcut command is "Run JS in web page":

  var videos = document.getElementsByTagName("video");
  if (videos) {
    var video = videos[0];
        video.webkitSetPresentationMode(video.webkitPresentationMode === "picture-in-picture" ? "inline" : "picture-in-picture");
  }

  completion({"success": true});