Apple Releases Safari Technology Preview 138 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 release 138 includes bug fixes and performance improvements for Web Inspector, CSS, Experimental Model Element, Media, Web Animation, WebAuthn, SVG, Web API, Service Workers, WebRTC, WebAssembly, and Web Extensions.

The current ‌Safari Technology Preview‌ release is built on the Safari 15.4 update and it includes Safari 15 features introduced in macOS Monterey.

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

wwdc sans text feature

Apple Rumored to Announce New Product on February 19

Thursday February 5, 2026 12:22 pm PST by
Apple plans to announce the iPhone 17e on Thursday, February 19, according to Macwelt, the German equivalent of Macworld. The report, citing industry sources, is available in English on Macworld. Apple announced the iPhone 16e on Wednesday, February 19 last year, so the iPhone 17e would be unveiled exactly one year later if this rumor is accurate. It is quite uncommon for Apple to unveil...
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 ...
maxresdefault

Apple Shows Off a Key Reason to Upgrade to the iPhone 17

Saturday February 7, 2026 9:26 am PST by
Apple today shared an ad that shows how the upgraded Center Stage front camera on the latest iPhones improves the process of taking a group selfie. "Watch how the new front facing camera on iPhone 17 Pro takes group selfies that automatically expand and rotate as more people come into frame," says Apple. While the ad is focused on the iPhone 17 Pro and iPhone 17 Pro Max, the regular iPhone...
Finder Siri Feature

Why Apple's iOS 26.4 Siri Upgrade Will Be Bigger Than Originally Promised

Friday February 6, 2026 3:06 pm PST by
In the iOS 26.4 update that's coming this spring, Apple will introduce a new version of Siri that's going to overhaul how we interact with the personal assistant and what it's able to do. The iOS 26.4 version of Siri won't work like ChatGPT or Claude, but it will rely on large language models (LLMs) and has been updated from the ground up. Upgraded Architecture The next-generation...
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...

Top Rated Comments

isomorphic Avatar
53 months ago

Hows the adblock addon situation over at Safari~?
Nothing compares to uBlock Origin with appropriate blocklists. Apple's attempt to make Safari more "private" by restricting the extension APIs just exposes Safari users to more privacy-destroying advertising.
Score: 7 Votes (Like | Disagree)
gank41 Avatar
53 months ago

Hows the adblock addon situation over at Safari~?

Some sites are just atrocious to browse without adblock~
There's plenty of options out there, but what I don't like is this cluttered mess.
I wish Safari had an overflow menu like Chrome & Firefox...



Attachment Image
Score: 5 Votes (Like | Disagree)
JosephAW Avatar
53 months ago
Meanwhile those of use who can’t upgrade our hardware or software are thrown under the bus. Good thing there’s alternative browsers that don’t rely on Apple’s framework. :rolleyes:
Score: 2 Votes (Like | Disagree)
tigres Avatar
53 months ago
Normal safari freezes on me once a day, without fail. Acts like internet connection is no longer- and I have to kill it and re-open. Is this a thing, Or my install in anyones opinion?
Score: 2 Votes (Like | Disagree)
Skeith Avatar
53 months ago
Hows the adblock addon situation over at Safari~?

Some sites are just atrocious to browse without adblock~
Score: 2 Votes (Like | Disagree)
TracesOfArsenic Avatar
53 months ago
Regular Safari feels experimental enough to me. I'd love it to be stable and reliable like other browsers. I guess when you don't make money off it there's no incentive.
Score: 2 Votes (Like | Disagree)