Apple Releases Safari Technology Preview 144 With Bug Fixes and Performance Improvements - MacRumors
Skip to Content

Apple Releases Safari Technology Preview 144 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 144 includes bug fixes and performance improvements for Web Inspector, CSS, Web Animations, JavaScript, WebAuthn, Web API, Accessibility, Media, Security Policy, 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

Safari Technology Preview Updated Feature 1

Apple Releases Safari Technology Preview 256 With Bug Fixes and Performance Improvements

Wednesday November 4, 2026 4:21 pm PST by
Apple today released a new update for Safari Technology Preview, the experimental browser that was first introduced in March 2016. Apple designed Safari Technology Preview to allow users to test features that are planned for future release versions of the Safari browser. Safari Technology Preview 256 includes fixes and updates for Accessibility, Animations, CSS, Editing, Forms, HTML,...
apple pro tell logo

Apple Launching Five New Products Tomorrow

Thursday November 5, 2026 12:59 am PST by
Apple is releasing five new products this Friday, November 6, following pre-orders that opened last week, including its first touchscreen MacBook Pro models. The following new products will be available from tomorrow: iPad mini with OLED display and A20 Pro chip iMac with M6 chip 14-inch MacBook Pro with M6 chip 14-inch MacBook Pro with OLED touchscreen 16-inch MacBook Pro with OLED...
Apple Store Logo

Apple Store in UK Permanently Closing Later This Month

Tuesday November 3, 2026 7:34 am PST by
Apple today announced that its Festival Place store in Basingstoke, England will be permanently closing on Saturday, November 21. Apple Festival Place Apple had already announced that the store would be closing in November, but it had not provided the public with a specific date until now. Apple's store inside the Festival Place shopping center opened in 2011, so it had a 15-year run....

Top Rated Comments

59 months ago
I know it’s probably niche but please fix the memory issues when watching Twitch. Literally eats GB’s of memory.
Score: 4 Votes (Like | Disagree)
59 months ago
But will the WebKit team ever implement the ES2018 feature (raised in 2017!) of RegExp lookbehind assertions ('https://bugs.webkit.org/show_bug.cgi?id=174931')? I mean it'd be nice not to switch to another browser just to visit a site like: https://russiaslosses.netlify.app ('https://russiaslosses.netlify.app/')
Score: 4 Votes (Like | Disagree)
59 months ago
If Apple listened Safari wouldn't continue to be a suck fest
Score: 3 Votes (Like | Disagree)
MacAddict1978 Avatar
59 months ago

I used to think Safari was so good. Everyday I use it something goes wrong that works perfectly in Chrome or Firefox. Safari is terribly unreliable
Amen. I get so many issues with many sites or web based applications. Scrolling and the entire pages moves instead of scrolling giving you white space is one of the most annoying and frequent items. It has gotten better with rendering most things, but still sucks in comparison.
Score: 2 Votes (Like | Disagree)
miniyou64 Avatar
59 months ago
I used to think Safari was so good. Everyday I use it something goes wrong that works perfectly in Chrome or Firefox. Safari is terribly unreliable
Score: 2 Votes (Like | Disagree)
miniyou64 Avatar
59 months ago

Everyone's mileage varies. Safari works splendidly for me.
You must visit exclusively 2 or 3 really reliable sites haha
Score: 1 Votes (Like | Disagree)
Latest Stories
Apple Surveys iPhone Duo Buyers About Crease and Camera
Apple Surveys iPhone Duo Buyers About Crease and Camera
5 hours ago
Apple's First Touchscreen Mac is Now Arriving to Customers
Apple's First Touchscreen Mac is Now Arriving to Customers
6 hours ago
Claude Gets Personal Finance Feature With Bank Account Linking
Claude Gets Personal Finance Feature With Bank Account Linking
7 hours ago
Apple Arcade Adds Crossy Road Rush and NBA 2K27
Apple Arcade Adds Crossy Road Rush and NBA 2K27
7 hours ago
Apple's New HomeView Smart Home Hub: Here's How Much RAM It Has
Apple's New HomeView Smart Home Hub: Here's How Much RAM It Has
8 hours ago
iPad Mini vs. iPad Air Buyer's Guide: Now Just $50 Apart
iPad Mini vs. iPad Air Buyer's Guide: Now Just $50 Apart
9 hours ago
First iOS 27.3 and macOS Golden Gate 27.3 Public Betas Now Available
First iOS 27.3 and macOS Golden Gate 27.3 Public Betas Now Available
10 hours ago
Apple Announces a New Mac Sales Record
Apple Announces a New Mac Sales Record
11 hours ago
Paid $200 for Logic Pro? Apple Says You Won't Get This New Feature
Paid $200 for Logic Pro? Apple Says You Won't Get This New Feature
12 hours ago
Instagram's Edits Video Editor is Now Available on Mac
Instagram's Edits Video Editor is Now Available on Mac
12 hours ago
Prevent Siri and Search From Accessing Specific iPhone Apps
Prevent Siri and Search From Accessing Specific iPhone Apps
12 hours ago
Best Early Black Friday Deals on iPhone 18 Pro and iPhone Duo
Best Early Black Friday Deals on iPhone 18 Pro and iPhone Duo
14 hours ago
MacBook Pro PROLED XDR Reviews Are In: Is the Touchscreen Worth It?
MacBook Pro PROLED XDR Reviews Are In: Is the Touchscreen Worth It?
14 hours ago
Early Black Friday Accessory Deals at Amazon Include TVs, Headphones, and Charging Devices
Early Black Friday Accessory Deals at Amazon Include TVs, Headphones, and Charging Devices
14 hours ago
Apple Creator Studio App Updates Rolling Out, Starting With Logic Pro
Apple Creator Studio App Updates Rolling Out, Starting With Logic Pro
14 hours ago
Siri AI Waitlist Now Limited to Times of 'High Demand,' Says Apple
Siri AI Waitlist Now Limited to Times of 'High Demand,' Says Apple
17 hours ago
See Apple's Touchscreen MacBook Pro in Action
See Apple's Touchscreen MacBook Pro in Action
17 hours ago
MacBook Neo Shipments Expected to Double in 2027
MacBook Neo Shipments Expected to Double in 2027
17 hours ago
HomeView Code Suggests Future Support for AI Chatbot Apps, Anti-Spoofing Protection
HomeView Code Suggests Future Support for AI Chatbot Apps, Anti-Spoofing Protection
18 hours ago
Got an iPhone Duo on Launch Day? Tomorrow Could Be Your Last Chance to Return It
Got an iPhone Duo on Launch Day? Tomorrow Could Be Your Last Chance to Return It
19 hours ago
Apple Launching Five New Products Tomorrow
Apple Launching Five New Products Tomorrow
20 hours ago
Apple Releases Safari Technology Preview 256 With Bug Fixes and Performance Improvements
Apple Releases Safari Technology Preview 256 With Bug Fixes and Performance Improvements
1 day ago
Apps Can Now Try to Stop You From Canceling Subscriptions
Apps Can Now Try to Stop You From Canceling Subscriptions
1 day ago
'Super Mario Odyssey' Can Now Run on Apple TV Thanks to AI
'Super Mario Odyssey' Can Now Run on Apple TV Thanks to AI
1 day ago
How 'Resident Evil' Director Zach Cregger Uses His iPhone to Make Movies
How 'Resident Evil' Director Zach Cregger Uses His iPhone to Make Movies
1 day ago
HomePod Mini 2's Amount of RAM Confirmed
HomePod Mini 2's Amount of RAM Confirmed
1 day ago
Apple TV's '12 Days of Snoopy' Special Arrives November 13
Apple TV's '12 Days of Snoopy' Special Arrives November 13
1 day ago
Apple is Putting Employees on an AI Budget
Apple is Putting Employees on an AI Budget
1 day ago
Apple Releases Xcode 27.3 Beta With Three New Features
Apple Releases Xcode 27.3 Beta With Three New Features
1 day ago
Apple Will Check Public iCloud Links for Harmful Content Starting in iOS 27.3
Apple Will Check Public iCloud Links for Harmful Content Starting in iOS 27.3
1 day ago