Apple Releases Safari Technology Preview 129 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 129 includes bug fixes and performance improvements for Web Inspector, CSS, Scrolling, Rendering, WebAssembly, Web API, Platform Features, IndexedDB, Media, WebGL, and WebCrypto.

Apple says that on macOS Big Sur, this release requires enabling the GPU Process: Media option from the Experimental Features setting in the Develop menu. Turning on the option addresses issues with streaming services.

The current ‌Safari Technology Preview‌ release is built on the new Safari 15 update included in macOS Monterey, and as such, it includes several Safari 15 features. There's a new streamlined tab bar with support for Tab Groups to organize tabs, along with improved support for Safari Web Extensions.

Live Text allows users to select and interact with text in images on the web, but the macOS Monterey beta and an M1 Mac is required. There's also Quick Notes support for adding links and Safari highlights to remember important information and ideas.

Other updates include WebGL 2 and new HTML, CSS, and JavaScript features.

The new ‌Safari Technology Preview‌ update is available for both macOS Big Sur and macOS Monterey, the newest version of the Mac operating system that's set to release this fall.

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.

Top Rated Comments

diamondsw Avatar
36 months ago
Am I the only one who uses the Favorites Bar? It looks really bizarre being under the tab bar now.

Attachment Image
Score: 6 Votes (Like | Disagree)
ericfroemling Avatar
36 months ago

Looks like they removed the option to use the new combined layout for tab bar. The tab bar is always separate in this release.
It looks like it's just been moved to Preferences -> Tabs instead of being under the View menu.
Score: 2 Votes (Like | Disagree)
jabbr Avatar
36 months ago

Weird thing is that my setting was reset after updating, since I was using the compact.
Yeah, makes we wonder if they will completely ditch the idea upon release. I hope not... I like the little bit of extra vertical space.
Score: 2 Votes (Like | Disagree)
chucker23n1 Avatar
36 months ago
The release notes no longer say that tab groups don’t sync.

But, it looks like tab groups don’t sync.
Score: 2 Votes (Like | Disagree)
abhibeckert Avatar
36 months ago

I really want to use Safari but no chromium engine kills it for me. I'm not saying you should use Chrome, just a chromium browser: Brave, Edge etc. Firefox is slow on some sites, while chromium browsers are fast.
And every test I've ever seen shows Safari browsers are faster. As someone who uses both, that's been my experience too. It's a noticeable difference.


Also Chrome is not the battery enemy it used to be. Lots of improvements the last couple of months
Forbes ran an article from earlier this year showing Chrome with an "Energy Impact" number 10x higher than Safari. It also mentioned the test device (M1 MacBook Pro) gets warm running Chrome but stays cold with Safari... which means Chrome is likely pushing the CPU hard enough that it will drop the clock speed to manage temperatures on some hardware. When that happens it will start getting *really* slow (I'm guessing this is why Chrome feels noticeably slower than Safari for me).

I'm sure Chrome has improved, they're working on it continuously, but I doubt it's improved that much.

And Safari isn't sitting still either. Safari 15 is even faster and uses less power than Safari 14.
Score: 2 Votes (Like | Disagree)
jabbr Avatar
36 months ago
it's still in the preferences under Tabs.

Attachment Image
Score: 1 Votes (Like | Disagree)

Popular Stories

iPhone 15 Pro FineWoven

Apple Reportedly Stops Production of FineWoven Accessories

Sunday April 21, 2024 6:03 am PDT by
Apple has stopped production of FineWoven accessories, according to the Apple leaker and prototype collector known as "Kosutami." In a post on X (formerly Twitter), Kosutami explained that Apple has stopped production of FineWoven accessories due to its poor durability. The company may move to another non-leather material for its premium accessories in the future. Kosutami has revealed...
Provenance Emulator

PlayStation and SEGA Emulator for iPhone and Apple TV Coming to App Store [Updated]

Friday April 19, 2024 8:29 am PDT by
The lead developer of the multi-emulator app Provenance has told iMore that his team is working towards releasing the app on the App Store, but he did not provide a timeframe. Provenance is a frontend for many existing emulators, and it would allow iPhone and Apple TV users to emulate games released for a wide variety of classic game consoles, including the original PlayStation, GameCube, Wii,...
iOS 17 All New Features Thumb

iOS 17.5 Will Add These New Features to Your iPhone

Sunday April 21, 2024 3:00 am PDT by
The upcoming iOS 17.5 update for the iPhone includes only a few new user-facing features, but hidden code changes reveal some additional possibilities. Below, we have recapped everything new in the iOS 17.5 and iPadOS 17.5 beta so far. Web Distribution Starting with the second beta of iOS 17.5, eligible developers are able to distribute their iOS apps to iPhone users located in the EU...
top stories 20apr2024

Top Stories: Nintendo Emulators on App Store, Two New iOS 17 Features, and More

Saturday April 20, 2024 6:00 am PDT by
It was a big week for retro gaming fans, as iPhone users are starting to reap the rewards of Apple's recent change to allow retro game emulators on the App Store. This week also saw a new iOS 17.5 beta that will support web-based app distribution in the EU, the debut of the first hotels to allow for direct AirPlay streaming to room TVs, a fresh rumor about the impending iPad Air update, and...
apple vision pro orange

Apple Vision Pro Customer Interest Dying Down at Some Retail Stores

Monday April 22, 2024 2:12 am PDT by
Apple Vision Pro, Apple's $3,500 spatial computing device, appears to be following a pattern familiar to the AR/VR headset industry – initial enthusiasm giving way to a significant dip in sustained interest and usage. Since its debut in the U.S. in February 2024, excitement for the Apple Vision Pro has noticeably cooled, according to Bloomberg's Mark Gurman. Writing in his latest Power On...