Apple Releases Safari Technology Preview 137 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 137 includes bug fixes and performance improvements for Web Inspector, CSS, JavaScript, WebAssembly, Experimental Model Element, Accessibility, Web API, Content Security Policy, Media, Apple Pay, 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. There's a new streamlined tab bar with support for Tab Groups to organize tabs, along with improved support for Safari Web Extensions. Apple in ‌Safari Technology Preview‌ 135 added 120Hz refresh rates for the new 14 and 16-inch MacBook Pro models.

Live Text allows users to select and interact with text in images on the web, but macOS Monterey and an M1 Mac is required. There's also Quick Notes support for adding links and Safari highlights to remember important information and ideas. The new ‌Safari Technology Preview‌ update is available for both macOS Big Sur and macOS Monterey, the newest version of the Mac operating system.

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

AirPods Pro 3 Mock Feature

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

Friday April 18, 2025 5:16 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...
CarPlay Hero

Apple Releases Wireless CarPlay Fix

Wednesday April 16, 2025 11:28 am PDT by
If you have been experiencing issues with wireless CarPlay in your vehicle lately, it was likely due to a software bug that has now been fixed. Apple released iOS 18.4.1 today, and the update's release notes say it "addresses a rare issue that prevents wireless CarPlay connection in certain vehicles." If wireless CarPlay was acting up for you, updating your iPhone to iOS 18.4.1 should...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday April 17, 2025 4:12 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
Beyond iPhone 13 Better Triad

Apple's 20th Anniversary iPhone May Finally Go All Screen

Tuesday April 15, 2025 6:31 am PDT by
Apple is preparing a "bold" new iPhone Pro model for the iPhone's 20th anniversary in 2027, according to Bloomberg's Mark Gurman. As part of what's being described as a "major shake-up," Apple is said to be developing a design that makes more extensive use of glass – and this could point directly to the display itself. Here's the case for Apple releasing a truly all-screen iPhone with no...
maxresdefault

iPhone 17 Pro Launching Later This Year With These 12 New Features

Sunday April 13, 2025 7:52 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Subscribe to the MacRumors YouTube channel for more videos. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and ...
iOS 19 Roundup Feature

iOS 19 Will Add These New Features to Your iPhone

Tuesday April 15, 2025 7:37 am PDT by
The first iOS 19 beta is less than two months away, and there are already a handful of new features that are expected with the update. Apple should release the first iOS 19 beta to developers immediately following the WWDC 2025 keynote, which is scheduled for Monday, June 9. Following beta testing, the update should be released to the general public in September. Below, we recap the key...
top stories 2025 04 19

Top Stories: iPhone 17 Pro Rumors, CarPlay Bug Fix, and More

Saturday April 19, 2025 6:00 am PDT by
This week saw rumor updates on the iPhone 17 Pro and next-generation Vision Pro, while a minor iOS 18.4.1 update delivered not just security fixes but also a fix for some CarPlay issues. We also looked ahead at what else is in Apple's pipeline for the rest of 2025 and even the 20th-anniversary iPhone coming in 2027, so read on below for all the details on these stories and more! iPhone 17 ...
Apple TV Plus Feature 2 Magenta and Blue

Apple TV+ Available at Significantly Lower Price Until Next Week

Friday April 18, 2025 11:42 am PDT by
Apple TV+ is currently available at a much lower price than usual, but time is running out if you want to take advantage of the offer. In the U.S., new and qualified returning customers can subscribe to Apple TV+ for just $2.99 per month, for three months. Afterwards, regular pricing of $9.99 per month applies. The offer is available in the Apple TV app, and at tv.apple.com, through April...

Top Rated Comments

mrr Avatar
44 months ago
Safari needs all the help it can get.
Score: 5 Votes (Like | Disagree)
jz0309 Avatar
44 months ago

No that was with the macOS 12.1 update a week ago
it actually got released for older OSs today, installed it on my iMac running Big Sur
Score: 3 Votes (Like | Disagree)
kitt9000 Avatar
44 months ago
Wow, this technology preview release really does add 120hz, even on the released macOs 12.1! Side by side this preview vs. the 12.1 release-included safari shows a BIG difference in scrolling, particularly when browsing macrumors. I was going to install macOS 12.2 beta, but glad I tried this first!
Score: 2 Votes (Like | Disagree)
kToni73 Avatar
44 months ago

Safari needs all the help it can get.
Just like the rest of Apple's Software. (Music, Podcasts...)
Score: 2 Votes (Like | Disagree)
joshwenke Avatar
44 months ago

Ha. Been a while for that one. We’ll played.

Do we happen to know the origin of that phrase? I would love to know who first penned that. I want to say it could have been as long ago as 15 years - maybe more - and I’m 100% certain they meant it. To think how far it has traveled. Kind of one of the earlier memes. If not one of the more organic.
Changelogs from Safari updates in years past included it. It became a huge joke here.
Score: 2 Votes (Like | Disagree)
TheYayAreaLiving ?️ Avatar
44 months ago
Woo hoo! On a roll. Hopefully, Safari is getting smoother and smoother.
Score: 1 Votes (Like | Disagree)