safaripreviewiconApple today released a new update for Safari Technology Preview, the experimental browser Apple first introduced four years ago 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 release 103 includes bug fixes and performance improvements for Web Inspector, Web API, CSS, Page Loading, Back-Forward Cache, and JavaScript.

The new ‌Safari Technology Preview‌ update is available for both macOS Mojave and MacOS Catalina, the newest version of the Mac operating system that was released in October 2019.

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.

Tag: Safari Technology Preview

Top Rated Comments

CarlJ Avatar
CarlJ
67 months ago

They can make all these upgrades but we will NEVER get 4K youtube :(
That's not a bug or a result of 4K being too far down the to-do list, or any such, rather, it's because Apple and Google have different viewpoints on encoding formats - IIRC, Google insists on VP9/AV1 for 4K, while Apple has thus far preferred to stick with the officially approved standards like H.264 and H.265 (which goes up to 8K).
Score: 3 Votes (Like | Disagree)
SuprUsrStan Avatar
SuprUsrStan
67 months ago
They can make all these upgrades but we will NEVER get 4K youtube :(
Score: 2 Votes (Like | Disagree)
TSE Avatar
TSE
67 months ago
Hopefully Safari becomes a little bit snappier.
Score: 2 Votes (Like | Disagree)
macbequick Avatar
macbequick
67 months ago
This is the laziest article series of this entire site. All you are doing is re-using the same text over and over again while updating a few sentences to represent the latest iteration of Safari Technology Preview. Kind of pointless. This is better served at Twitter rather than here. Maybe provide something more relevant or concrete. I too can sign-up to notifications from Apple when an update is released.
Score: 2 Votes (Like | Disagree)
ksec Avatar
ksec
67 months ago

I stumbled across this yesterday, it says 4k on my Mac mini 2011 with safari 12, unplayable even in 1080p like I'm used to.

So safari supports 4k in h265 codec or is it something else?
No, but great Finding!. ( Finally )

If you right click on it there is stats for nerds. Which said it is avc1.640033 (266) / mp4a.40.2 (140 )

Suggesting it is still the same H.264. But now you get 4K. It seems be some 3D Video with 360 degree viewing angle ( You can press the control under the BBC music logo to adjust viewing angle.

I wonder if this is only for MultiView Video or if 4K on H.264 is on Youtube's to do list.
Score: 1 Votes (Like | Disagree)
ahlsn Avatar
ahlsn
67 months ago

Is it possible to install safari preview and use the „final“ safari version that comes with MacOS or will it overwrite it when I install preview ?
Yep, it will show up as a separate app named Safari Tecnologiy Preview. I've using both right now.
Score: 1 Votes (Like | Disagree)
Read All Comments

Popular Stories

iphone 17 air iphone 16 pro

iPhone 17 Air USB-C Port May Have This Unusual Design Quirk

Wednesday April 30, 2025 3:59 am PDT by
Apple is preparing to launch a dramatically thinner iPhone this September, and if recent leaks are anything to go by, the so-called iPhone 17 Air could boast one of the most radical design shifts in recent years. iPhone 17 Air dummy model alongside iPhone 16 Pro (credit: AppleTrack) At just 5.5mm thick (excluding a slightly raised camera bump), the 6.6-inch iPhone 17 Air is expected to become ...
Read Full Article • 143 comments
iphone 16 display

iPhone 17's Scratch Resistant Anti-Reflective Display Coating Canceled

Monday April 28, 2025 12:48 pm PDT by
Apple may have canceled the super scratch resistant anti-reflective display coating that it planned to use for the iPhone 17 Pro models, according to a source with reliable information that spoke to MacRumors. Last spring, Weibo leaker Instant Digital suggested Apple was working on a new anti-reflective display layer that was more scratch resistant than the Ceramic Shield. We haven't heard...
Read Full Article • 115 comments
AirPods Pro 3 Mock Feature

AirPods Pro 3 Just Months Away – Here's What We Know

Tuesday April 29, 2025 1:30 am PDT by
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
Read Full Article • 102 comments
iPhone 17 Air Pastel Feature

iPhone 17 Reaches Key Milestone Ahead of Mass Production

Monday April 28, 2025 8:44 am PDT by
Apple has completed Engineering Validation Testing (EVT) for at least one iPhone 17 model, according to a paywalled preview of an upcoming DigiTimes report. iPhone 17 Air mockup based on rumored design The EVT stage involves Apple testing iPhone 17 prototypes to ensure the hardware works as expected. There are still DVT (Design Validation Test) and PVT (Production Validation Test) stages to...
Read Full Article • 28 comments
apple watch ultra yellow

What's Next for the Apple Watch Ultra 3 and Apple Watch SE 3

Friday April 25, 2025 2:44 pm PDT by
This week marks the 10th anniversary of the Apple Watch, which launched on April 24, 2015. Yesterday, we recapped features rumored for the Apple Watch Series 11, but since 2015, the Apple Watch has also branched out into the Apple Watch Ultra and the Apple Watch SE, so we thought we'd take a look at what's next for those product lines, too. 2025 Apple Watch Ultra 3 Apple didn't update the...
Read Full Article • 65 comments
iPhone 17 Pro on Desk Feature

All iPhone 17 Models Again Rumored to Feature 12GB of RAM

Tuesday April 29, 2025 3:36 am PDT by
All upcoming iPhone 17 models will come equipped with 12GB of RAM to support Apple Intelligence, according to the Weibo-based leaker Digital Chat Station. The claim from the Chinese leaker, who has sources within Apple's supply chain, comes a few days after industry analyst Ming-Chi Kuo said that the iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max will all be equipped with 12GB of RAM. ...
Read Full Article • 85 comments
iOS App Store General Feature JoeBlue

Epic Games Wins Major Victory as Apple is Ordered to Comply With App Store Anti-Steering Injunction [Updated]

Wednesday April 30, 2025 4:01 pm PDT by
In a victory for Epic Games, Apple was today found to be in violation of a 2021 injunction that required it to allow developers to direct customers to third-party purchase options on the web using in-app links. Judge Yvonne Gonzalez Rogers, who has been handling the Apple vs. Epic Games dispute for the last five years, said that Apple is in "willful violation" of the injunction she issued to ...
Read Full Article • 232 comments
iphone 16 pro ghost hand

iPhone 18 to Use High Performance Six-Channel Memory, Claims Leaker

Tuesday April 29, 2025 7:00 am PDT by
Apple's iPhone 18 lineup will introduce a major leap in memory performance, according to new information shared today by Weibo-based leaker Digital Chat Station. Apple is reportedly planning to equip the 2026 models with a high-capacity six-channel LPDDR5X memory configuration, significantly upping the memory bandwidth for future AI features and multitasking. Expanding the memory bandwidth...
Read Full Article • 92 comments