Apple Releases Safari Technology Preview 144 With Bug Fixes and Performance Improvements - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
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,...
iOS 28 AI

Apple Taking New Approach to Developing iOS 28 and macOS 28

Sunday November 8, 2026 7:42 am PST by
Apple has made a change to its development process for iOS 28, macOS 28, and corresponding software updates, according to Bloomberg's Mark Gurman. In his Power On newsletter today, he said Apple separates development of each year's new operating systems into three major stages. Typically, he said each stage consists of four weeks of coding followed by a four-week "convergence" period where...
duo aquarium

More Fun iPhone Duo Apps: 30 New Picks to Try

Friday November 6, 2026 3:27 pm PST by
When the iPhone Duo launched, we shared a list of some of the fun apps developers created for the new form factor. Two weeks out, developers are continuing to come up with fresh ideas, so we thought we'd share some of our favorites. Games Marbles Unhinged ($2.99) - Marbles Unhinged is a marble maze designed for the Duo. When you fold it, the floor turns into a ramp. If you stand the top...

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 Watch Ultra 4 Gets $99 Amazon Discounts, Starting at $699.99
Apple Watch Ultra 4 Gets $99 Amazon Discounts, Starting at $699.99
9 minutes ago
Apple Pay Ad Features Martial Arts Convenience Store Food Fight
Apple Pay Ad Features Martial Arts Convenience Store Food Fight
16 minutes ago
Apple Continues to Say Some AI Features Will Have Fees for Extra Usage
Apple Continues to Say Some AI Features Will Have Fees for Extra Usage
23 minutes ago
Apple Announces Türkiye Expansion Plans as Tim Cook Visits
Apple Announces Türkiye Expansion Plans as Tim Cook Visits
2 hours ago
Singapore Saved Apple $2.7 Billion in Taxes This Year
Singapore Saved Apple $2.7 Billion in Taxes This Year
2 hours ago
Apple Music's 2026 Artist of the Year is Olivia Dean
Apple Music's 2026 Artist of the Year is Olivia Dean
2 hours ago
This Could Be Your Last Chance to Pre-Order the HomeView at a Discount
This Could Be Your Last Chance to Pre-Order the HomeView at a Discount
2 hours ago
Some HomePod Mini 2 Buyers Returning Units Over Mac Speaker Issues
Some HomePod Mini 2 Buyers Returning Units Over Mac Speaker Issues
3 hours ago
MacBook Pro With PROLED XDR Display: Details You Might Have Missed
MacBook Pro With PROLED XDR Display: Details You Might Have Missed
3 hours ago
Satechi Offers MacRumors Readers 30% Off Select Accessories in Early Black Friday Sale
Satechi Offers MacRumors Readers 30% Off Select Accessories in Early Black Friday Sale
3 hours ago
Leaker Envisions a Shorter iPhone With a New iOS Layout
Leaker Envisions a Shorter iPhone With a New iOS Layout
4 hours ago
Apple to Give You More Control Over When Your Mac Passwords Lock
Apple to Give You More Control Over When Your Mac Passwords Lock
4 hours ago
Siri Is Getting a Better Memory
Siri Is Getting a Better Memory
5 hours ago
iPhone 18e Could Feature Bigger Display and Battery
iPhone 18e Could Feature Bigger Display and Battery
5 hours ago
Apple's Siri Boss May Leave - Here's Who Could Take Over
Apple's Siri Boss May Leave - Here's Who Could Take Over
6 hours ago
Apple Launching Two More New Products This Friday
Apple Launching Two More New Products This Friday
6 hours ago
Apple Store Subscription Sign-Up Controversy Exposed
Apple Store Subscription Sign-Up Controversy Exposed
15 hours ago
Siri AI Rumored to Become 'More Like an Agent' as Early as Next Year
Siri AI Rumored to Become 'More Like an Agent' as Early as Next Year
1 day ago
Apple Taking New Approach to Developing iOS 28 and macOS 28
Apple Taking New Approach to Developing iOS 28 and macOS 28
1 day ago
Early Apple Black Friday Deals on Apple Watch, MacBook Air, and More
Early Apple Black Friday Deals on Apple Watch, MacBook Air, and More
2 days ago
'Backglow' Lets You Customize New MacBook Pro's Glowing Apple Logo
'Backglow' Lets You Customize New MacBook Pro's Glowing Apple Logo
2 days ago
Top Stories: Apple Product Launches, iOS 27.3 Beta, and More
Top Stories: Apple Product Launches, iOS 27.3 Beta, and More
2 days ago
More Fun iPhone Duo Apps: 30 New Picks to Try
More Fun iPhone Duo Apps: 30 New Picks to Try
3 days ago
Hands-On With Apple's New OLED Touchscreen MacBook Pro
Hands-On With Apple's New OLED Touchscreen MacBook Pro
3 days ago
Apple Store With All-New Design Opening Soon in Southern California
Apple Store With All-New Design Opening Soon in Southern California
3 days ago
Control the Glowing Apple Logo on Your New MacBook Pro
Control the Glowing Apple Logo on Your New MacBook Pro
3 days ago
Apple Shares New 'Apple Card: Apply and Use in Minutes' Ad
Apple Shares New 'Apple Card: Apply and Use in Minutes' Ad
3 days ago
Apple Says More Than 100,000 Apps Optimized for iPhone Duo, Here's What's Still Missing
Apple Says More Than 100,000 Apps Optimized for iPhone Duo, Here's What's Still Missing
3 days ago
Early Black Friday Deals Kickoff With Steep Discounts on Apple Watch Ultras and More
Early Black Friday Deals Kickoff With Steep Discounts on Apple Watch Ultras and More
3 days ago
The MacRumors Show: iOS 27.3 Looks Like a Huge Update
The MacRumors Show: iOS 27.3 Looks Like a Huge Update
3 days ago