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.

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
Apple is planning some of the "biggest iOS and macOS redesigns in its history," according to Bloomberg's Mark Gurman.
In his Power On newsletter today, Gurman reiterated that iOS 19 will have a visionOS-like design with more transparent interfaces:The new interfaces will adopt the design principles introduced in visionOS, the software for Apple's Vision Pro headset. That includes greater...
If you've been following iPhone rumors over the last few years, you may remember reading reports that Apple flirted with the idea of introducing a super high-end "Ultra" model that would either replace its Pro Max device or sit above it in Apple's smartphone hirearchy. These reports appeared in the pre-launch iPhone 15 and iPhone 16 rumor cycles, but ultimately came to nothing. Now though, the...
Apple prototyped a larger ultra-slim iPhone 17 Air with a 6.9-inch display, but ultimately decided not to go ahead with the device because of fears that it could be susceptible to bending, according to a new report.
Bloomberg reporter Mark Gurman, writing in his latest Power On newsletter:
When it first started work on the phone, it prototyped a device with a 6.9-inch screen — matching...
In an investor research note today with British bank Barclays, analyst Tim Long said Apple's first foldable iPhone could have a starting price in the $2,300 range in the United States, which would make it by far the most expensive iPhone model ever.
If the first foldable iPhone starts at $2,299, that means it would cost nearly twice as much as the iPhone 16 Pro Max, which starts at $1,199.
...
The iOS 18.3.2 update that Apple released last week appears to have broken iCloud Mail for some users. There are multiple complaints on Reddit and the MacRumors forums from users who say that iCloud Mail is not able to push new iCloud emails to their iPhones after the iOS 18.3.2 update.
Affected users say that despite having the correct settings enabled, new iCloud emails are not showing up...
Bloomberg's Mark Gurman today shared some new details about the rumored iPhone 17 Air.
In his Power On newsletter, Gurman said he was told that the device may start at roughly $899 in the U.S., which means that it would occupy the same price point as the iPhone 16 Plus. This would make sense, as it has been widely rumored that the Air model will take over the Plus model's spot in the iPhone...
All four iPhone 17 models launching later this year will feature an upgraded 24-megapixel front-facing camera, according to analyst Jeff Pu.
In a research note today with investment firm GF Securities, Pu shared a chart in which he reiterated that the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max will each be equipped with a 24-megapixel front camera. By comparison, all four ...
Apple considered launching the iPhone 17 Air without a USB-C charging port, according to Bloomberg's Mark Gurman.
In his Power On newsletter today, Gurman said that while Apple ultimately decided against making the iPhone 17 Air its first iPhone model without a charging port, the idea is still on the table for future iPhone models.
He said the iPhone 17 Air will "foreshadow a move to...