I am trying to re-add several extensions to Safari 13 that "are no longer supported," by adding them back via "Show Extension Builder" in the Develop menu. But that is no longer in the Develop menu!

Is there another way to return my older extensions like Amazon Assistant, Amazon Wish List, WOT etc., to Safari 13?

  • 1
    The old style extensions built with Safari Extension Builder are not supported in Safari 13, you'll need to look for updated versions.
    – red_menace
    Commented Sep 21, 2019 at 1:44
  • apple.stackexchange.com/q/370871/347564. Can you please suggest a solution.
    – tester123
    Commented Sep 24, 2019 at 19:44

1 Answer 1


Removed support for Legacy Safari Extensions.

from Safari 13 Release Notes

which I interpret as no support for developing legacy ones either. How would you develop an extension which you can't even run/test on the browser?

You might need to build a new one or convert the older one.

  • You can convert your old extension, or build a new one.
    – red_menace
    Commented Sep 21, 2019 at 14:51
  • @red_menace I meant no support for developing legacy ones. Ofc newer ones will continue to be made.
    – anki
    Commented Sep 21, 2019 at 17:07
  • Thank you, Ankii and red_menace, for your answers. There is an easier way to convert legacy extensions, via this article from OS X Daily, "How to Bypass “Safari no longer supports unsafe extension” Error in Mac OS Mojave." For this to work, I need to find, in the Develop menu, "Show Extension Builder," which is NOT THERE in the new update, Safari 13! If it were, I could add the (converted) .zip file and run it in Safari, and it would stay in my Extensions file in the Preference pane. I would attach the pdf of the article, but I don't know how to on this site. mtgraffeo
    – mtgraffeo
    Commented Sep 21, 2019 at 22:20
  • @mtgraffeo yes I know that method, I just suggested that to David today in this answer about omnikey. Just put the link of the article if you wanted to but title is enough to search for. I just answered you question "Is there a way to get extensions?".... "Show extension builder has been removed" was just a statement we cannot do much about.
    – anki
    Commented Sep 21, 2019 at 22:23
  • 1
    Thanks again, ankii. That article is very similar to the one I read. So, no more WOT, Amazon Assistant, etc., unless I hear back from those developers or if I can find a way to DOWNGRADE to the previous Safari! mtgraffeo
    – mtgraffeo
    Commented Sep 21, 2019 at 23:03

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .