Apple Releases Safari Technology Preview 150 With Bug Fixes and Performance Improvements

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 Feature
‌Safari Technology Preview‌ release 150 includes bug fixes and performance improvements for Web Inspector, CSS, Shadow DOM, JavaScript, Web Animations, Web Share, WebAuthn, Web API, Rendering, and Accessibility.

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.

Popular Stories

Apple Logo Spotlight

Report: Apple to Launch These New Products in 2026

Sunday November 2, 2025 5:34 am PST by
Apple is planning to launch at least 15 new products in 2026, according to Bloomberg's Mark Gurman. Gurman outlined what to expect from Apple in 2026 in the latest edition of his "Power On" newsletter. He said the company is heading "into one of its most pivotal years in recent memory," with the rollout of major new Apple Intelligence features, intense regulatory pressure on the App Store,...
ios 26 1 slide to stop

iOS 26.1 Brings Back 2007 Feature in New Way

Friday October 31, 2025 1:40 pm PDT by
The upcoming iOS 26.1 update includes a small but helpful change for iPhones, and it could prevent you from running late to something important. Specifically, when an alarm goes off in the Clock app, there is a new "slide to stop" control on the screen for turning off the alarm. On previous iOS 26 versions, there is simply a large "stop" button, which could be accidentally tapped. The new ...
Apple Intelligence General Feature 2

New Version of Siri to 'Lean' on Google Gemini

Sunday November 2, 2025 6:06 am PST by
In his "Power On" newsletter, Bloomberg's Mark Gurman today provided an update on the status of Apple Intelligence and the plans for it in 2026. Apple is still planning to roll out its revamped version of Siri around March of next year. The release should be accompanied by the release of a new smart home display product with speaker-base and wall-mount options. A new Apple TV and HomePod...
HomePod mini and Apple TV

New Apple TV and HomePod Mini Likely Launching Soon

Sunday November 2, 2025 5:49 am PST by
A new Apple TV and HomePod mini could launch as soon as this month, Bloomberg's Mark Gurman today suggested. In today's "Power On" newsletter, Gurman said that Apple retail stores are planning an overnight refresh on the evening of November 11, where changes will be made after closing, such as refreshing displays and placing new products for the following day. The timing of the overnight...
iOS 26

Apple Releases iOS 26.1 With Liquid Glass Toggle, Slide to Stop Alarm, New Apple Intelligence Languages and More

Monday November 3, 2025 1:11 pm PST by
Apple today released iOS 26.1, the first major update to the iOS 26 operating system that came out in September, iOS 26.1 comes over a month after iOS 26 launched. ‌iOS 26‌.1 is compatible with the ‌iPhone‌ 11 series and later, as well as the second-generation ‌iPhone‌ SE. The new software can be downloaded on eligible iPhones over-the-air by going to Settings > General >...
Apple Foldable Thumb

iPhone Fold: Launch, Pricing, and What to Expect From Apple's Foldable

Friday October 31, 2025 8:52 am PDT by
Apple is expected to launch a new foldable iPhone next year, based on multiple rumors and credible sources. The long-awaited device has been rumored for years now, but signs increasingly suggest that 2026 could indeed be the year that Apple releases its first foldable device. Below, we've collated an updated set of key details that have been leaked about Apple's foldable iPhone so far. Ove...
Early Black Friday Deals 2

The Best Early Black Friday Apple Deals

Sunday November 2, 2025 10:04 am PST by
We're officially in the month of Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When ...
M5 MacBook Pro

Waiting for New Macs? Apple Just Shared Bad News

Friday October 31, 2025 7:32 am PDT by
Apple has just given a strong indication that it will not be releasing any additional new Macs for the remainder of the year. Apple's CFO Kevan Parekh dropped the hint during the company's earnings call on Thursday:On Mac, keep in mind, we expect to face a very difficult compare against the M4 MacBook Pro, Mac mini, and iMac launches in the year-ago quarter.Parekh essentially gave a heads up ...

Top Rated Comments

PsykX Avatar
43 months ago

Who uses Safari anymore?.
I switched to Edge and I am mediocrely happy with it, which is light years less terrible user friendly than Safari. Not sure I made sense :)
The pinned home page was good and when Apple removed it, along with the 1998 bookmarks management interface I switched to a 2005 style browser. Ah, the good old days of 2015 when Safari was “fast and focused”…
Bookmarks management sucks, but Safari's the fastest browser.
I can't trade it for anything else at the moment.
Score: 4 Votes (Like | Disagree)
temende Avatar
43 months ago
I keep running into this Safari bug (?) where I'll go to a url in a new tab and it'll quickly flash the page before going back to an empty tab.
Score: 4 Votes (Like | Disagree)
6787872 Avatar
43 months ago
it's a shame safari has such a horrific extension system or it would be a decent browser.
Score: 3 Votes (Like | Disagree)
Kraszim Avatar
43 months ago
I gave up on safari recently due to very limited content blocking options. Webpages recently become such a mess with miriads of different cookie popups etc. that trying to use them without content blocking is not particularly pleasant. Firefox does it way better. It's a shame really as Safari is best integrated with macOS, and in my opinion faster.
Score: 3 Votes (Like | Disagree)
tracker_oz Avatar
43 months ago

Fastest? lol.. try the others, seriously.. even swiping back & forth pages it's probably among the slowest ones.

Bookmarks management suck? What about extensions? dev tools? tab groups? cookie management? privacy tools? RAM management? no built-in ad blocker, compact view with the same UI glitches since beta 1, sometimes even icloud.com fails to load while working fine in other browsers, media playback is a pandora box depending the site, issues with most productivity domains from Google, Atlassian, Microsoft, etc, etc, etc, etc, etc, etc, etc, etc.
Wow! I wish that I had your "milli-second response" eyes! Seriously though, Safari loads cached pages very, very fast, and using far less resources than Chrome-based browsers.

Something that is worrying me, and I know many others too, is the move towards the bad-old days of "works best with..." or "only works with...". Apparently, we are no better than our predecessors. I am disappointed that so many users on this forum are helping to make this happen.

"That men do not learn very much from the lessons of history is the most important
of all the lessons that History has to teach."

Aldous Huxley
Score: 2 Votes (Like | Disagree)
3Rock Avatar
43 months ago
Max studio here and I have absolutely no problem with Safari. I will never use chrome but I do like safari no matter who says differently.
Score: 1 Votes (Like | Disagree)