Apple Releases Safari Technology Preview 72 With Bug Fixes and Performance Improvements - MacRumors
Skip to Content

Apple Releases Safari Technology Preview 72 With Bug Fixes and Performance Improvements

by

safaripreviewiconApple today released a new update for Safari Technology Preview, the experimental browser Apple first introduced over two years ago in March of 2016. Apple designed the Safari Technology Preview to test features that may be introduced into future release versions of Safari.

Safari Technology Preview release 72 includes fixes and updates for Web Authentication, CSS Painting API, Web API, WebRTC, Web Inspector, Web Share API, Media, JavaScript, and Service Workers.

The new Safari Technology Preview update is available for both macOS High Sierra and macOS Mojave, the newest version of the Mac operating system that was released to the public in September.

The Safari Technology Preview update is available through the Software Update mechanism in the Mac App Store 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

nvmls Avatar
101 months ago
Lol Apple, more of the same, you put out a "dev" version and within 5 minutes of use one can see dev tools not only still carry old bugs but now we have new ones.

Open inspector and select any DOM nodes, then another.. seems they stack forever. In addition to this, inspector gets frozen so easily it's just comical this is being released for "devs".



Also, on "stable" Safari, modal scrolling has been broken throughout all 2018, you fixed it 1 or 2 STP versions ago, having released a newer "stable" version not long ago, do you think you could make it by 2020 for the fix?

For anyone wondering (all exp. features on):


Attachment Image

Attachment Image
Score: 2 Votes (Like | Disagree)
101 months ago
[doublepost=1545592216][/doublepost]The new version, build 14607.1.17.1, introduces a new bug. It won't hold the zoom settings for any website. Further, the default for new pages isn't recognized. Upon each launch zoom reverts to 100% despite being set, in my case, for 115%. I filed a bug report with Apple.
I've had this issue with the last few builds, reported it related to Preview 70 and got feedback it was previously submitted. Still, annoying, that.
Score: 1 Votes (Like | Disagree)
101 months ago
Lol Apple, more of the same, you put out a "dev" version and within 5 minutes of use one can see dev tools not only still carry old bugs but now we have new ones.

Open inspector and select any DOM nodes, then another.. seems they stack forever. In addition to this, inspector gets frozen so easily it's just comical this is being released for "devs".



Also, on "stable" Safari, modal scrolling has been broken throughout all 2018, you fixed it 1 or 2 STP versions ago, having released a newer "stable" version not long ago, do you think you could make it by 2020 for the fix?

For anyone wondering (all exp. features on):
It isn't a "dev" version, it's a tech preview. It's basically a beta.
Score: 1 Votes (Like | Disagree)

Popular Stories

iOS 27 Next to iPhone

Here's When iOS 27 Rolls Out Today in Every Time Zone

Sunday September 13, 2026 3:00 am PDT by
Apple is about to release iOS 27, which will finally deliver more advanced Siri AI capabilities as well as a variety of other refinements, improvements, and new features to iPhones. It's Apple's biggest software update of the year, and Apple announced at Wednesday's iPhone event that it will be releasing iOS 27 sometime today – Monday, September 14. iOS 27 won't be the only release today,...
deep black iphone 18 pro

Apple Says iPhone 18 Pro Max Sold in U.S. Differs in One Way

Saturday September 12, 2026 3:27 pm PDT by
As noted by Nicolas Lellouche, who writes for the French tech website Numerama, Apple has updated its tech specs pages for the iPhone 18 Pro and iPhone 18 Pro Max to clarify which models are equipped with its new C2 cellular modem and where. Apple now says the iPhone 18 Pro has a C2 modem worldwide, while the iPhone 18 Pro Max uses the chip in every country except for the U.S. According...
iphone duo

IMAX Reacts to iPhone Duo's 1:1.4 Aspect Ratio Displays

Friday September 11, 2026 4:42 am PDT by
Production theater company IMAX has responded in a mixed way to Apple's embrace of a 1:1.4 aspect ratio on the iPhone Duo's inner and outer displays. The boxier ratio happens to be very close to the classic "full-frame" IMAX 1.43:1 aspect ratio, which comes from the geometry of the company's original 15-perforation/70mm film system. In response to an X post from someone wondering if we'll see...