safaripreviewiconApple today released a new update for Safari Technology Preview, the experimental browser Apple first introduced 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 38 includes fixes and improvements for Fetch API, Web Payments, CSS, Web API, Media, Apple Pay, Web Inspector, and WebDriver. Today's update also enables the Beacon API by default and implements new Beacon API features.

With Safari 11 now available to developers through the macOS High Sierra beta, Apple is providing two versions of Safari Technology Preview, one for macOS Sierra users and one for those using macOS High Sierra.

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

Susurs Avatar
51 months ago
What is Beacon?
Score: 3 Votes (Like | Disagree)
Erdbeertorte Avatar
51 months ago
I have a question for you folks who are running this preview, now that the beacon api has been enabled.

Is there an option/setting to turn that off?
Normally everything is unchecked in Develop/Experimental Features, if you install it for the first time except for the Beacon API this time.
It seems there are four new features because I always check everything. Even though I don't have any clue what all that means. ;)


[doublepost=1503519194][/doublepost]
Interesting... this is the first time the Safari Tech Preview update hasn't shown up for me in the App Store immediately after I read the article about it here on MacRumors. Hmm. o_O
It hasn't shown up there for me too since at least the last three versions. I Just wanted to ask if anyone else experienced this.

Attachment Image

Attachment Image
Score: 2 Votes (Like | Disagree)
JaguarF Avatar
51 months ago
As was pointed out to me recently, if you enable everything under Develop > Experimental, it's 464. (On Sierra.)
Really? I get a score of 474 with all the experimental features activated.

Attachment Image
Score: 2 Votes (Like | Disagree)
jimothyGator Avatar
51 months ago
What is Beacon?
I wondered this, too. I found this documentation ('https://developer.mozilla.org/en-US/docs/Web/API/Beacon_API'). The "Why Use Beacon?" section gives an example use case.
Score: 2 Votes (Like | Disagree)
Erdbeertorte Avatar
51 months ago
Does Preview version support Youtube 4k already or still nothing ?
Seems to work for some videos I tried now. Maybe the other ones lied about being 4K or need Flash what Safari seems only support for very old and/or long videos that are Flash only.

A few days ago I checked it with the previous version and found nothing higher than 1440p.




Attachment Image

Attachment Image
Score: 2 Votes (Like | Disagree)
mdriftmeyer Avatar
51 months ago
Wait really?
Not really. Preview 38 459/555.

Preview 38 is Safari 11.1 listed string on macOS 10.12.

Interestingly, Safari 11 beta 6 that can be downloaded for El Captian and Sierra is 455/555. The difference is no beacon enabled yet and Subresource integrity under the Security tests.

By comparison: Safari 10.2 currently for macOS 10.12 is 419/555.

WebGL 2 is currently enabled in 10.2 but going under additional testing for 11 (beta 6) and 11.1 (Preview 38)

Safari 10.2 lacks Peer to Peer 0/38 points, Scripting 0/3 for Modules.k

Outside of shoring up Forms, Peer-to-Peer Media Stream recorder and Screen Capture, Writable streams, Audio speech recognition, and possibly Device motion/orientation with WebVR, plus the Web Animations API nothing new features are untouched.

What's always ongoing will be future web standards that are yet to be flushed out like WebGPU (https://gpuweb.github.io/admin/cg-charter.html), updates to current HTML 5.x (5.2/5.3 RC) [if necessary], CSS 1/2/3 full support(https://www.w3.org/Style/CSS/) and possibly SVG 1.2/2.x/MathML, etc.

Nothing drastically is missing, unless you think having Forms support and web applications are a do or die scenario between Safari and Chrome.
Score: 1 Votes (Like | Disagree)

Top Stories

nothing ear 1 buds 1

Nothing 'Ear (1)' True Wireless Earbuds Launch to Take on AirPods Pro With ANC and Unusual Design for $99

Tuesday July 27, 2021 7:57 am PDT by
Nothing, a new brand from OnePlus founder Carl Pei, has today officially launched the "Ear (1)" true wireless earbuds after months of anticipation around the company's AirPods Pro rival. The Ear (1) features an in-ear design, Active Noise Cancelation, Bluetooth 5.2, IPX4 water resistance, and a charging case with Qi-compatible wireless charging and a USB-C port. Fast pairing is supported on...
iPhone 13 Always On Feature

iPhone 13 to Bring Over a Major Feature From the Apple Watch

Wednesday July 28, 2021 2:21 am PDT by
Apple's upcoming iPhone 13 lineup will feature an always-on display akin to the Apple Watch Series 5 and Series 6, according to recent reports. In his weekly Power On newsletter, Bloomberg journalist Mark Gurman, who often reveals accurate insights into Apple's plans, said that the iPhone 13 may feature an Apple Watch-inspired always-on mode. The Apple Watch Series 5 and Apple Watch...
duracell battery bitter coating

Apple Says Don't Buy AirTag Replacement Batteries With Bitter Coating

Wednesday July 28, 2021 11:08 am PDT by
Since AirTags were just released earlier this year and are expected to have a year-long battery life, it may be some time yet before AirTag users need a replacement battery, but when the time comes for a refresh, Apple is warning customers not to buy batteries with a bitter coating. AirTags use coin-shaped CR2032 batteries, which happen to be a size that's easy to swallow. Some battery...
iPad mini pro feature 2

iPad Mini 6 to Feature 8.3-Inch Display With No Home Button and Narrower Bezels

Monday July 26, 2021 12:26 pm PDT by
The sixth-generation iPad mini that's in the works will have an 8.3-inch display, according to display analyst Ross Young. That will be larger than the current 7.9-inch display, with the larger size due to the removal of the Home button and a narrower bezel design. Rumors about the iPad mini 6 have been picking up in recent weeks ahead of its prospective launch this fall. Apple analyst...
iOS 15 General Feature Purple

Everything New in iOS 15 Beta 4: Safari Tweaks, MagSafe Battery Pack Support, Notification Updates and More

Tuesday July 27, 2021 11:47 am PDT by
Apple today released the fourth betas of iOS 15 and iPadOS 15, introducing additional refinements to the new features that are coming in the software updates. In these betas, Apple has introduced changes for Safari, Notifications, Focus mode, and more. Safari Updates Apple is continuing to refine the design of Safari on the iPhone, and in iOS 15, there are tweaks to improve usability. ...
new m1 chip

Tim Cook on Apple Deciding to Manufacture Components: 'We Ask Ourselves If We Can Do Something Better'

Tuesday July 27, 2021 3:04 pm PDT by
During today's earnings call for the third fiscal quarter of 2021 (second calendar quarter), Apple CEO Tim Cook was asked how Apple decides what components to purchase and what components to develop, and Cook said that Apple asks if it can be done better. We ask ourselves if we can do something better. If we can deliver a better product. If we can buy something in the market and it's great...
iPad Pro Feature Magenta

Mac Otakara: iPad Air 5 to Feature iPad Pro-Like Design, No Design Changes Coming to iPad Mini 6 or iPad 9

Tuesday July 27, 2021 11:06 am PDT by
The next-generation iPad Air will feature a design that's similar to the third-generation iPad Pro, according to Japanese site Mac Otakara. Citing a Chinese supplier, the site says that the fifth-generation iPad Air will continue to feature a 10.9-inch display and a Touch ID button on the side, but it will gain a dual-lens camera system with Wide and Ultra Wide cameras. A LiDAR Scanner is ...
Apple Leak Feature

Apple Demands Leaker Reveals Sources Under Threat of Being Reported to Police

Wednesday July 28, 2021 6:53 am PDT by
Apple has sent a cease and desist letter to a leaker based in China as part of its continuing attempts to curtail leaks of unreleased products, according to Vice. A Chinese citizen who shared images of stolen Apple prototypes on social media was sent a warning letter from Fangda Partners, Apple's law firm in China, on June 18, 2021. An extract from the letter read:You have disclosed without ...
iOS 14 on iPhone feature emergency

Apple Releases iOS and iPadOS 14.7.1 With Fix for Touch ID Apple Watch Bug

Monday July 26, 2021 9:48 am PDT by
Apple today released iOS and iPadOS 14.7.1, minor bug fix updates that come just a week after the release of iOS 14.7, software that introduced new Apple Card features and support for the MagSafe Battery Pack. The iOS and iPadOS 14.7.1 updates can be downloaded for free and the software is available on all eligible devices over-the-air in the Settings app. To access the new software, go to...
General iOS 14

iOS 14.7.1 and macOS Big Sur 11.5.1 Patch Security Vulnerability That May Have Been Actively Exploited

Monday July 26, 2021 11:55 am PDT by
Apple today released unexpected iOS 14.7.1 and iPadOS 14.7.1 updates to the public, and according to a newly released support document, the software addresses a serious security vulnerability that may have been exploited in the wild. Apple says that an application may have been able to execute arbitrary code with kernel privileges due to a memory corruption issue. "Apple is aware of a report ...