Apple Releases Safari Technology Preview 125 With Bug Fixes and Performance Improvements - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Releases Safari Technology Preview 125 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 125 includes bug fixes and performance improvements for Web Inspector, CSS, Web Animations, WebAssembly, Storage, Web API, Rendering, and WebRTC.

The current ‌Safari Technology Preview‌ release is the built on the new Safari 14 update included in macOS Big Sur with support for Safari Web Extensions imported from other browsers, tab previews, password breach notifications, web authentication with Touch ID, and more.

The new ‌Safari Technology Preview‌ update is available for both macOS Catalina and macOS Big Sur, 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

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

countryside Avatar
71 months ago
Please make DuckDuckGo the default search engine on Safari. Show that you ACTUALLY care about user privacy.
Score: 5 Votes (Like | Disagree)
LFC2020 Avatar
71 months ago
W

Please make DuckDuckGo the default search engine on Safari. Show that you ACTUALLY care about user privacy.
will never happen, apple is getting to nuch 💰💰💰from google.
Score: 2 Votes (Like | Disagree)
srbNYC Avatar
71 months ago
It says you have to upgrade to Big Sur for me. I have Catalina on unsupported MBP.


This page of Apple's seems to have a version for Catalina

https://developer.apple.com/safari/download/
Score: 1 Votes (Like | Disagree)
blueflower Avatar
71 months ago
Safari is mad slow but I trust it more than the others to do financial transactions. So I use it to make purchases. I use firefox and opera they are blazing fast. I didn't even bother to put filthy chrome on my mac. Now that you mention edge maybe ill try it out. Truthfully, I had started to use it during my final months on windows. @funktight
Score: 1 Votes (Like | Disagree)
funktight Avatar
71 months ago
I've long ago migrated from Safari and Chrome to Edge. Safari crawls like a snail on my M1 based MBA and Chrome becomes a massive resource hog. Not quite sure what's up with Safari, but until it runs as quick as Edge is (for me) it will stay in the dock, but never bounce to life :confused:
Score: 1 Votes (Like | Disagree)
srbNYC Avatar
71 months ago
I noticed problems on 124. Print buttons on some websites didn't launch the print dialog, animated graphics didn't show up, etc. These functions on the same pages do work on the current regular Safari release, so I just reverted to that as my default. Now tempted to try the new one....
Score: 1 Votes (Like | Disagree)
Latest Stories
Apple Releases macOS Golden Gate 27.2.1
Apple Releases macOS Golden Gate 27.2.1
36 minutes ago
Apple Releases iOS 27.2.1 With Bug Fixes
Apple Releases iOS 27.2.1 With Bug Fixes
40 minutes ago
Apple Releases watchOS 27.2.1 and visionOS 27.2.1 With Security Fixes
Apple Releases watchOS 27.2.1 and visionOS 27.2.1 With Security Fixes
42 minutes ago
Apple Watch Ultra 4 Gets $99 Amazon Discounts, Starting at $699.99
Apple Watch Ultra 4 Gets $99 Amazon Discounts, Starting at $699.99
51 minutes ago
Apple Pay Ad Features Martial Arts Convenience Store Food Fight
Apple Pay Ad Features Martial Arts Convenience Store Food Fight
58 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
1 hour 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
3 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
3 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
4 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
5 hours ago
Siri Is Getting a Better Memory
Siri Is Getting a Better Memory
6 hours ago
iPhone 18e Could Feature Bigger Display and Battery
iPhone 18e Could Feature Bigger Display and Battery
6 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
7 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