Apple Releases Safari Technology Preview 66 With Bug Fixes and Feature Improvements


macrumors bot
Original poster
Apr 12, 2001

Apple today released a new update for Safari Technology Preview, the experimental browser Apple first introduced over two years ago in March of 2016. Apple designed the Safari Technology Preview to test features that may be introduced into future release versions of Safari.

Safari Technology Preview release 66 includes bug fixes and feature improvements for Web Share API, Conic Gradients, WebRTC, Shadow DOM, CSS, Web Inspector, Web API, Apple Pay, JavaScript, Media, Web Animations, Web Assembly, and Password AutoFill.

The new Safari Technology Preview update is available for both macOS High Sierra and macOS Mojave, the newest version of the Mac operating system that was released to the public earlier this week. After installing macOS Mojave, Apple says you may need to reinstall Safari Technology Preview.

The Safari Technology Preview update is available through the Software Update mechanism in the Mac App Store to anyone who has downloaded the browser. Full release notes for the update are available on the Safari Technology Preview website.

Apple's aim with Safari Technology Preview is to gather feedback from developers and users on its browser development process. Safari Technology Preview can run side-by-side with the existing Safari browser and while designed for developers, it does not require a developer account to download.

Article Link: Apple Releases Safari Technology Preview 66 With Bug Fixes and Feature Improvements


macrumors member
Sep 18, 2013
My preferred browser that "wipes the floor" with all the other browsers - especially when it comes to blazing speed. And yes, you must reinstall Safari Technology Preview after installing Mojave. Otherwise, you will be left with an "X"'d out ghost icon in your dock.


macrumors 6502a
Mar 14, 2010
East Coast, USA
I've been using the STP for awhile as my main browser. IME, it's the fastest browser you can use on macOS. The only problem I've had was crashing a lot a few versions back. It was fixed in the next release though.
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