Apple Releases Safari Technology Preview 199 With Bug Fixes and Performance Improvements

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
‌Safari Technology Preview‌ 199 includes fixes and updates for Apple Pay, CSS, Editing, JavaScript, Media, Rendering, and WebRTC.

The current ‌Safari Technology Preview‌ release is compatible with machines macOS Sonoma and the macOS Sequoia beta, the newest version of macOS that Apple is beta testing.

The ‌Safari Technology Preview‌ update is available through the Software Update mechanism in System Preferences or System Settings 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

iOS 26

iOS 26.3 and iOS 26.4 Will Add These New Features to Your iPhone

Tuesday February 3, 2026 7:47 am PST by
While the iOS 26.3 Release Candidate is now available ahead of a public release, the first iOS 26.4 beta is likely still at least a week away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April. Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far. iOS 26.3 iPhone to Android Transfer Tool iOS 26.3 makes it easier...
imac video apple feature

Apple Makes Its Second-Biggest Acquisition Ever

Tuesday February 3, 2026 12:45 pm PST by
Apple recently acquired Israeli startup Q.ai for close to $2 billion, according to Financial Times sources. That would make this Apple's second-biggest acquisition ever, after it paid $3 billion for the popular headphone maker Beats in 2014. This is also the largest known Apple acquisition since the company purchased Intel's smartphone modem business and patents for $1 billion in 2019....
Apple Logo Zoomed

Tim Cook Teases Plans for Apple's Upcoming 50th Anniversary

Thursday February 5, 2026 12:54 pm PST by
Apple turns 50 this year, and its CEO Tim Cook has promised to celebrate the milestone. The big day falls on April 1, 2026. "I've been unusually reflective lately about Apple because we have been working on what do we do to mark this moment," Cook told employees today, according to Bloomberg's Mark Gurman. "When you really stop and pause and think about the last 50 years, it makes your heart ...
Apple TV Color

Apple TV Announces 12 New Shows and Films Coming This Year

Wednesday February 4, 2026 12:29 pm PST by
Apple on Tuesday previewed 12 new shows and films that will be premiering on the Apple TV streaming service throughout 2026. The new series: Imperfect Women — March 18, 2026 Margo's Got Money Troubles — April 15, 2026 Widow's Bay — April 29, 2026 Maximum Pleasure Guaranteed — May 20, 2026 Cape Fear — June 5, 2026 Lucky — July 15, 2026 The new films: Eternity — ...
iphone 16 pro colors 1

Apple Begins Selling Refurbished iPhone 16 and iPhone 16 Pro Models at Lower Prices

Wednesday February 4, 2026 7:44 am PST by
Apple today began selling certified refurbished iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max models on its online store in the U.S., with prices discounted by 12% to 22% compared to Apple's current or former pricing for the devices. Here were Apple's starting prices when the devices launched in September 2024: iPhone 16: $799 iPhone 16 Plus: $899 iPhone 16 Pro:...

Top Rated Comments

nortonandreev Avatar
20 months ago
LMAO, I just had a dream last night that a new version (301) is released. I woke up, opened maceumours and boom – indeed. hahah
Score: 2 Votes (Like | Disagree)
d4cloo Avatar
20 months ago

Seems like Safari Technology Preview has been in development for a long time.

Wow, since 2016 - 8 years.

When will it be finished and become the next Safari?
Safari takes improvements from Technology Preview all the time. It isn’t a separate product, instead the results of the preview are implemented in Safari every now and then.
Score: 2 Votes (Like | Disagree)
Adora Avatar
20 months ago
Finally working again with the latest macOS Betas.

But still the same version 18.0 with just a higher build number.

Isn't TP normally not a newer version? There is a Beta of Safari 18 for Sonoma and Ventura so the TP should be something newer. But maybe this changes later. I wasn't on macOS beta for a while before Sequoia.

The first DB doesn't even had a launch-able version. And in DB3 it was unusable since release of this version.


Edit: Also feels snappier than standard Safari. ?
Score: 1 Votes (Like | Disagree)