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macrumors bot
Original poster
Apr 12, 2001

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

Safari Technology Preview release 83 includes bug fixes and performance improvements for Storage Access API, Rendering, Service Workers, CSS, WebRTC, WebDriver, Web API, and Web Inspector.

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 in September 2018.

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 83 With Bug Fixes and Performance Improvements


macrumors regular
Aug 12, 2016
I wonder if the new Safari on macOS 10.15 will still support extensions not downloaded from the MAS?


macrumors regular
Apr 19, 2010
499 of 555 on https://html5test.com/ using up-to-date Mojave with all experimental features checked.

And this time it didn't crash, refuse to go to the site, or hang indefinitely on the site (like the previous preview version).
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macrumors 603
Sep 23, 2008
I wonder if the new Safari on macOS 10.15 will still support extensions not downloaded from the MAS?

They are deprecated. The Safari tech previews no longer support them at all. In all likelihood macOS 10.15 will remove them as well.
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