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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 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 151 includes bug fixes and performance improvements for Web Inspector, WebDriver, CSS, Rendering, Media, JavaScript, Web API, Web Components, Accessibility, Lockdown Mode, and Web Extensions.

The current Safari Technology Preview release is built on the Safari 16 update and it includes support for feature coming in macOS Ventura such as Live Text, Passkeys, Web Extension improvements, and more.

The new build of Safari Technology Preview is compatible with machines running macOS 13 Ventura, unlike prior versions of Safari Technology Preview, but it no longer works with macOS Big Sur.

The Safari Technology Preview update is available through the Software Update mechanism in System Preferences 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 151 With Bug Fixes and Performance Improvements

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macrumors G3
Jul 22, 2002
If they could decouple Safari from macOS that would be nice. Seeing feature upgrades out of yearly cycle would be great
They should have something like a special decoupled version of Safari that people could use to Preview the upcoming Technology. I bet if they’d started this awhile ago, they’d be on version 150… maybe even 151 by now!
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Reactions: JackNL and Kraszim


macrumors 68030
Jan 26, 2003
Sort of given up hope that they will ever allow users to left-align the bookmark bar. It really grates on me the fact that it has to float in the center. It's horrible UI design. Not sure why that couldn't have been a preference setting.


macrumors 6502
Apr 22, 2022
If they could decouple Safari from macOS that would be nice. Seeing feature upgrades out of yearly cycle would be great
In the last two years Safari has been updated with new rendering engine features every 50 days or so. On Ventura it will be possible to easily update Safari without having to download a 1GB macOS update.

But I wouldn't expect any major UI feature.


macrumors member
Nov 12, 2020
All I care about is getting back ublock origin for Safari. Content blockers suck.
Why? I prefer it since the extension has no rights to read the page (I use 1Blocker) and it feels safer to me, however I like to hear the cons as well.


macrumors member
Mar 24, 2018
you guys having trouble to sign in to some websites ? On normal Safari works very well...but on STP no. It has something with new experimental features thing, or... ?
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