Apple Releases Safari Technology Preview 147 With macOS Ventura Features

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
The current ‌Safari Technology Preview‌ release is built on the Safari 16 update and it includes features coming in macOS Ventura. It adds support for Live Text in videos and images, new web technologies, web push Passkeys, improved Safari Web Extensions, and more, with Apple's notes below.

Many of the new Safari 16 features are now available in Safari Technology Preview 147:

  • Live Text. Select and interact with text in videos or translate text in images on the web in macOS Ventura betas on Apple Silicon-based Macs.
  • Web technologies. Experience and test the HTML, CSS, JavaScript, and other web technologies that are available in Safari 16 Beta and included in previous Safari Technology Preview releases.
  • Web Push. Send notifications to people who opt-in on your website or web app with Safari Technology Preview on macOS Ventura betas.
  • Passkeys. Preview the new type of phishing-resistant credential that makes signing in to websites safer and easier. Available through Safari's WebAuthn platform authenticator. To learn more about passkeys, see Meet passkeys.
  • Improved Safari Web Extensions. Test out API improvements including the ability to open a Safari Web Extension popover programmatically.
  • Web Inspector Extensions. Build custom tooling or convert existing developer tools extensions to use in Web Inspector.
  • Flexbox Inspector. Use the new visualization overlay in Web Inspector to help you more quickly and easily understand the layout of elements with Flexbox. It marks both the free space and gaps between flex items to reveal how they affect the result.

Shared Tab Groups, syncing for Tab Groups, Website Settings, and Web Extensions are not enabled in this release.

The new build of ‌Safari Technology Preview‌ is compatible with machines running macOS 13 Ventura, unlike prior versions of ‌Safari Technology Preview‌. Updates to ‌Safari Technology Preview‌ are no longer available for macOS Big Sur, according to Apple.

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

maxresdefault

Apple Releases iOS 18.4 With Priority Notifications, Ambient Music, New Emoji and More

Monday March 31, 2025 10:03 am PDT by
Apple today released iOS 18.4 and iPadOS 18.4, the fourth major updates to the iOS 18 and iPadOS 18 operating system updates that came out last year. iOS 18.4 and iPadOS 18.4 come two months after Apple released iOS 18.3 and iPadOS 18.3. Subscribe to the MacRumors YouTube channel for more videos. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to...
iPhone 17 Pro 34ths Perspective

iPhone 17 Pro Launching Later This Year With These 10 New Features

Sunday March 23, 2025 10:00 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of March 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
iOS 19 Mock WWDC25 Feature

iOS 19 Expected to Run on These iPhones

Monday March 31, 2025 5:28 pm PDT by
iOS 19 will not be available on the iPhone XR, iPhone XS, or the iPhone XS Max, according a private account on social media site X that has accurately provided information on device compatibility in the past. The iPhone XR, iPhone XS, and iPhone XS Max all have an A12 Bionic chip, so it looks like iOS 19 will discontinue support for that chip. All other iPhones that run iOS 18 are expected...
top stories 2025 03 29

Top Stories: WWDC 2025 Announced, iPhone 17 Pro and iOS 19 Rumors, and More

Saturday March 29, 2025 6:00 am PDT by
Apple's big developer event is a little over two months away, and rumors about what we can expect to see in Apple's next major operating system updates are becoming increasingly frequent. A public release of iOS 18.4 is also imminent with a number of updates and improvements, although we won't be getting the major Apple Intelligence Siri upgrades that had reportedly been planned for this...
Magic Mouse Green

What to Expect From the Magic Mouse 3

Saturday March 29, 2025 10:15 am PDT by
Apple is reportedly working on a new Magic Mouse. Below, we recap what to expect. The two key rumors for the Magic Mouse 3 so far include a relocated charging port, along with a more ergonomic design. It was briefly rumored that the Magic Mouse 3 would also feature voice control, but that was misinterpreted information. Relocated Charging Port While the Magic Mouse switched from...
iOS 18

iOS 18.4 Expected Next Week - Here Are the Release Notes

Friday March 28, 2025 2:01 pm PDT by
With the second release candidate of iOS 18.4 that Apple seeded out today, the company finally provided us with release notes that give a full rundown on what to expect. There's an Apple Vision Pro app, new Apple Intelligence features for notifications and additional language support, plus an Apple News Food feature for Apple News+ subscribers, and several updates that should improve the...
Foldable iPhone 2023 Feature Homescreen

Six Things to Know About Apple's Upcoming Foldable iPhone

Friday March 28, 2025 3:54 pm PDT by
We've been hearing rumors about a foldable iPhone for almost a decade now, but it looks like we might finally see the device come to fruition in 2026. We're going to be waiting many more months for the foldable iPhone, but so far we're hearing good things. Apple wants to make it creaseless. It's taken Apple multiple years to design a foldable iPhone that it's satisfied with because Apple ...
iOS 19 visionOS UI Elements

Apple Codename Provides Clue About iOS 19's Rumored New Design

Sunday March 30, 2025 6:40 am PDT by
Multiple sources have claimed that iOS 19 will introduce a new design with more translucent buttons, menus, notification banners, and more, and there is now another clue that points towards this glass-like appearance. Bloomberg's Mark Gurman today said the new design project is codenamed "Solarium" internally. A solarium is a room with glass walls that allow in plenty of sunlight, so this...

Top Rated Comments

Motawa Avatar
36 months ago
Give us the new beta lmao
Score: 5 Votes (Like | Disagree)
CarlJ Avatar
36 months ago

I wonder how much Konqueror code still lives inside Safari?
According to Wikipedia ('https://en.wikipedia.org/wiki/Safari_(web_browser)#Other_features_and_system_requirements') (and this matches my memory of the events: "WebKit consisted of WebCore (based on Konqueror ('https://en.wikipedia.org/wiki/Konqueror')'s KHTML engine) and JavaScriptCore (originally based on KDE's JavaScript engine ('https://en.wikipedia.org/wiki/KDE%27s_JavaScript_engine'), named KJS)." So, if I understand correctly, nothing of Konqueror itself was used, rather it was KHTML; and, that code all went into WebKit, which is open source and up on the web ('https://webkit.org'). You could go run some comparisons to determine how much code overlap there is now, which would depend on what standards you use for measuring, I suppose.
Score: 5 Votes (Like | Disagree)
nortonandreev Avatar
36 months ago

Wish they fixed this regression from the last version:


Wish they fixed anything at all.
Score: 2 Votes (Like | Disagree)
Macative Avatar
36 months ago

Web technologies. Experience and test the HTML, CSS, JavaScript, and other web technologies that are available in Safari 16 Beta and included in previous Safari Technology Preview releases.
Wow finally. Don't know how we used Safari without these features...
Score: 2 Votes (Like | Disagree)
adamw Avatar
36 months ago
New Safari improvements and latest tech advances are always welcomed and appreciated.
Score: 1 Votes (Like | Disagree)
phrehdd Avatar
36 months ago
Let's see what happens when installed. I find one of my biggest challenge is how web browser usage sucks up so much memory. I have this page open and one other and that is taking up to 1.4 gigs. The caching has no constraints. I would like to see the ability to set a limit for the browser. If I have 4-8 pages/tabs open, it will bring my art app to a halt. Thoughts?
Score: 1 Votes (Like | Disagree)