The culprit is the technology the plugin is based on: NPAPI, which has been deprecated in all major browsers because of security concerns, the latest of them being Safari with version 12. This means that you must use an unsupported browser, with all the risks that entails. Safari's extensions have not changed a great deal, but macOS Big Sur has made finding new ones easier — and enables developers to bring even more. All had been downloaded from known legit developers but apparently Apple’s gotten much much stricter about Safari extensions for security reasons and want to protect us from bad guys. So the new way is: all Extensions that will work with Safari 12 are now only available in the App Store https://safari-extensions.apple.com. How to Update Safari on Mac. This wikiHow teaches you how to update Safari and get rid of the 'This version of Safari is no longer supported' messages. If you're using a Mac with OS X 10.5 (Leopard) or older, you must first purchase a copy. SIMBL plugin for Safari. This is a fork of the original SafariStand project, that supports macOS Sierra and Safari 11 (and 10). Original project seems abandoned, so I decided to create this one to continue the project since the original does not work well with Safari 10 and the author does not seem to be accepting any pull requests.
As detailed well in this article
https://www.howtogeek.com/fyi/macos-mojave-will-break-a-bunch-of-safari-extensions/
Safari 12, which is part of Apple’s new OS Mojave and which I have just installed for some testing, has in my opinion a fairly major pitfall that will affect many users including I’m afraid your humble servant Mojave tester.
As soon as I finished downloading, installing and began using Mojave, as part of my testing opened up Safari. Instantly I get a pop-up message which you can see above that says “SAFARI NO LONGER SUPPORTS UNSAFE EXTENSIONS”
WTF APPLE?!
I realize Apple thinks this is in our best interest for Safety and Security however….! I had three very useful extensions loaded and that I had been using as part of my Safari (v.11) for years on a daily basis. Now they all were automatically disabled and effectively wiped off my machine. Of course they were working fine a half hour earlier before I did the Mojave upgrade when I was still using Safari 11 (+ Sierra). Theses extensions were quite safe and from reputable sources, and they were extremely useful to me! All had been downloaded from known legit developers but apparently Apple’s gotten much much stricter about Safari extensions for security reasons and want to protect us from bad guys. So the new way is: all Extensions that will work with Safari 12 are now only available in the App Store
So I start looking in the Safari Extension App Store collection and see what I can find for Gmail / Email… the choices seem pretty paltry and I could not find any with the functions I had wanted which I just lost via this Mojave upgrade. Not too mention many of the extension I see listed seem to be paid extensions one will have to purchase. No longer open source extensions from trust worthy developer that were previously Free.
Safari 12 Plugins Free
![Safari 12 plugins downloads Safari 12 plugins downloads](https://hikvision-plugin-safari-12.baydhabodownpayment.fun/img/fb5b30ecdc523f5a0364e2f51ca1b4cc.jpg)
To give you just one example, one extension I’ve used for years is called Gmail This – It was a useful extension which lets you send any webpage automatically, by copying the link into a new Gmail message which then you just add the person TO its going, and click Send. Its almost instant and saves me about 3 steps (copy the url, compose message in gmail, paste the url….) It was just great for sending someone an article or webpage in half a second, and I used this generally a few times a day.
![Plugins Plugins](https://macreports.com/wp-content/uploads/2019/08/safari-plugins.png)
Another useful extension I used is called MailTo extension which fixes clicking a links (which by default will open Apple Mail, which I do not use) and lets one open it Gmail in Safari (11)
Another extension I use Shortens URLs via Goo.gl. See these for example
Safari 12 Plugin
I looked around the Safari Extensions / App Store that Mojave is showing but really couldn’t find anything that seemed to do the same thing as the ones I had. ARGH!!! Maybe I will find them in future…? But frankly for the moment I see this as a bit of a deal breaker for Mojave, which otherwise I am liking…. so will likely switch back for the present for this one reason to Sierra!
If anyone has located some useful Gmail extensions that work with Safari 12/Mojave, and do some of these tasks, please leave some info about them in a Comment. Meanwhile I will probably Restore my backup of my pre-Mojave setup. One step forward, two steps backward Apple.
TO BE CONTINUED…