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

iOS 26

15 New Things Your iPhone Can Do in iOS 26.2

Friday December 5, 2025 9:40 am PST by
Apple is about to release iOS 26.2, the second major point update for iPhones since iOS 26 was rolled out in September, and there are at least 15 notable changes and improvements worth checking out. We've rounded them up below. Apple is expected to roll out iOS 26.2 to compatible devices sometime between December 8 and December 16. When the update drops, you can check Apple's servers for the ...
Intel Inside iPhone Feature

Apple's Return to Intel Rumored to Extend to iPhone

Friday December 5, 2025 10:08 am PST by
Intel is expected to begin supplying some Mac and iPad chips in a few years, and the latest rumor claims the partnership might extend to the iPhone. In a research note with investment firm GF Securities this week, obtained by MacRumors, analyst Jeff Pu said he and his colleagues "now expect" Intel to reach a supply deal with Apple for at least some non-pro iPhone chips starting in 2028....
iPhone 14 Pro Dynamic Island

iPhone 18 Pro Leak Adds New Evidence for Under-Display Face ID

Monday December 8, 2025 4:54 am PST by
Apple is actively testing under-screen Face ID for next year's iPhone 18 Pro models using a special "spliced micro-transparent glass" window built into the display, claims a Chinese leaker. According to "Smart Pikachu," a Weibo account that has previously shared accurate supply-chain details on Chinese Android hardware, Apple is testing the special glass as a way to let the TrueDepth...
iOS 26

Apple Seeds Second iOS 26.2 Release Candidate to Developers and Public Beta Testers

Monday December 8, 2025 10:18 am PST by
Apple today seeded the second release candidate version of iOS 26.2 to developers and public beta testers, with the software coming one week after Apple seeded the first RC. The release candidate represents the final version iOS 26.2 that will be provided to the public if no further bugs are found. Registered developers and public beta testers can download the betas from the Settings app on...
iPhone 17 Pro Cosmic Orange

10 Reasons to Wait for Next Year's iPhone 18 Pro

Monday December 1, 2025 2:40 am PST by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
Johny Srouji

Apple's Chipmaking Chief Johny Srouji Responds to Report About Him Potentially Leaving

Monday December 8, 2025 9:23 am PST by
Apple's chipmaking chief Johny Srouji has reportedly indicated that he plans to continue working for the company for the foreseeable future. "I love my team, and I love my job at Apple, and I don't plan on leaving anytime soon," said Srouji, in a memo obtained by Bloomberg's Mark Gurman. Here is Srouji's full memo, as shared by Bloomberg:I know you've been reading all kind of rumors and...
Johny Srouji

Apple Chip Chief Johny Srouji Could Be Next to Go as Exodus Continues

Sunday December 7, 2025 10:41 am PST by
Apple's senior vice president of hardware technologies Johny Srouji could be the next leading executive to leave the company amid an alarming exodus of leading employees, Bloomberg's Mark Gurman reports. Srouji apparently recently told CEO Tim Cook that he is "seriously considering leaving" in the near future. He intends to join another company if he departs. Srouji leads Apple's chip design ...
google pixel 10

Switching Between iPhone and Android Will Get Easier With New Apple and Google Collaboration

Monday December 8, 2025 11:10 am PST by
Apple and Google are teaming up to make it easier for users to switch between iPhone and Android smartphones, according to 9to5Google. There is a new Android Canary build available today that simplifies data transfer between two smartphones, and Apple is going to implement the functionality in an upcoming iOS 26 beta. Apple already has a Move to iOS app for transferring data from an Android...
top stories 2025 12 04a

Top Stories: iOS 26.2 Coming Soon, Apple Execs Depart, and More

Saturday December 6, 2025 6:00 am PST by
You'd expect things to be starting to wind down for the holidays by now, but that doesn't seem to be the case yet in the world of Apple news, with Apple just about ready to release iOS 26.2 and other operating system updates to the public. There was also a flurry of news this week about Apple executive departures, some expected and some not so expected, while we also learned that Apple and...
Apple Fitness Plus expansion hero

Apple Fitness+ Coming to 28 New Regions With Digital Voice Dubbing

Monday December 8, 2025 6:19 am PST by
Apple today announced that Fitness+ is expanding to 28 new markets on December 15 in the service's largest international rollout since launch, accompanied by new language dubbing and a K-Pop music genre. Apple Fitness+ will become available in Chile, Hong Kong, India, the Netherlands, Singapore, Taiwan, and additional regions on December 15, with Japan scheduled to follow early next year....

Top Rated Comments

PsykX Avatar
44 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
44 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
44 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
44 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
44 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
44 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)