Apple Releases Safari Technology Preview 125 With Bug Fixes and Performance Improvements - MacRumors
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

apple pro tell logo

Apple Launching Five New Products This Friday

Monday November 2, 2026 1:22 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 Friday: 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 Logo Gradient 16x9 1

Apple Isn't Done With 2026: Here's What's Still Coming

Monday November 2, 2026 7:27 am PST by
Apple's busiest season isn't over yet. Far from it. With two hardware launch dates still to come in November, plus software updates and new smart home accessories running into December, there's more on the way from Apple before the end of 2026, so be sure to stick around. Below, we've rounded up what's still coming, along with one date in particular that's worth watching if you're a holiday...
iPad Pro 2024 vs Air 2024 Feature

Three New iPads Rumored to Launch in First Half of 2027

Sunday November 1, 2026 7:27 am PST by
After announcing a new iPad mini with an OLED display earlier this month, Apple plans to release new iPad Air, iPad Pro, and entry-level iPad models in the first half of 2027, according to the latest word from Bloomberg's Mark Gurman. In his Power On newsletter today, Gurman said the next iPad Air will also feature an OLED display, while he expects the next iPad Pro to be equipped with a...

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
Everything New in the iOS 27.3 Beta
Everything New in the iOS 27.3 Beta
5 hours ago
Apple Music's New Selfie Sing Feature Lets You Record Karaoke Videos
Apple Music's New Selfie Sing Feature Lets You Record Karaoke Videos
6 hours ago
iPhone Jailbreak Gets Past Lockdown Mode and Survives an Update
iPhone Jailbreak Gets Past Lockdown Mode and Survives an Update
7 hours ago
iPadOS 27.3 Expands Siri Mode to Camera App
iPadOS 27.3 Expands Siri Mode to Camera App
9 hours ago
Veterans Day Apple Watch Activity Challenge Launches November 11
Veterans Day Apple Watch Activity Challenge Launches November 11
9 hours ago
Best Early Black Friday Mac Deals: Save Hundreds on MacBook Air, Mac Mini, and More
Best Early Black Friday Mac Deals: Save Hundreds on MacBook Air, Mac Mini, and More
10 hours ago
Apple Fitness+ Gets Gym Strength Plans in iOS 27.3
Apple Fitness+ Gets Gym Strength Plans in iOS 27.3
10 hours ago
iOS 27.3 Adding New StandBy Mode Features to iPhone 11 and Newer
iOS 27.3 Adding New StandBy Mode Features to iPhone 11 and Newer
10 hours ago
Apple Releases New AirPods Beta Firmware
Apple Releases New AirPods Beta Firmware
10 hours ago
iOS 27.3 Beta Brings Apple Intelligence to China
iOS 27.3 Beta Brings Apple Intelligence to China
10 hours ago
iPhone Duo Gets Reachability in iOS 27.3 Beta
iPhone Duo Gets Reachability in iOS 27.3 Beta
10 hours ago
Siri AI Gets More Capable in iOS 27.3
Siri AI Gets More Capable in iOS 27.3
11 hours ago
iOS 27.3 Adds Vertical Tabs and Adaptive Dark Mode to Safari
iOS 27.3 Adds Vertical Tabs and Adaptive Dark Mode to Safari
11 hours ago
watchOS 27.3 Brings Live Rewind and Siri Recap to Apple Watch
watchOS 27.3 Brings Live Rewind and Siri Recap to Apple Watch
11 hours ago
iOS 27.3 Beta Brings Back Apple's Redesigned Health App
iOS 27.3 Beta Brings Back Apple's Redesigned Health App
11 hours ago
Apple Releases First macOS Golden Gate 27.3 Beta
Apple Releases First macOS Golden Gate 27.3 Beta
12 hours ago
Apple Seeds First iOS 27.3 Beta
Apple Seeds First iOS 27.3 Beta
12 hours ago
Apple Releases First watchOS 27.3, tvOS 27.3 and visionOS 27.3 Betas
Apple Releases First watchOS 27.3, tvOS 27.3 and visionOS 27.3 Betas
12 hours ago
iPad Mini 8 Reviewer Dissatisfied With Apple's Excuse for Lack of 120Hz Display
iPad Mini 8 Reviewer Dissatisfied With Apple's Excuse for Lack of 120Hz Display
12 hours ago
iPad Mini 8 Review Claims Battery Life is Way Better Than Apple Says
iPad Mini 8 Review Claims Battery Life is Way Better Than Apple Says
12 hours ago
B&H Photo Launches Early Black Friday Sale With Discounts on Macs and Accessories
B&H Photo Launches Early Black Friday Sale With Discounts on Macs and Accessories
13 hours ago
iPhone Duo Could Take Nearly 30% of Foldable Market in 2027
iPhone Duo Could Take Nearly 30% of Foldable Market in 2027
13 hours ago
Apple Watch Automatically Identifies Songs Playing Around You
Apple Watch Automatically Identifies Songs Playing Around You
14 hours ago
iPhone 18 Rumored to Get Larger Battery and Potential Price Increase
iPhone 18 Rumored to Get Larger Battery and Potential Price Increase
14 hours ago
Apple Store in UK Permanently Closing Later This Month
Apple Store in UK Permanently Closing Later This Month
14 hours ago
Apple's Annual R&D Spending Jumps by More Than $11 Billion
Apple's Annual R&D Spending Jumps by More Than $11 Billion
15 hours ago
Will Apple Ever Merge iPadOS and macOS? John Ternus Responds
Will Apple Ever Merge iPadOS and macOS? John Ternus Responds
15 hours ago
MacBook Neo Gets Rare $30 Amazon Discount
MacBook Neo Gets Rare $30 Amazon Discount
15 hours ago
Hands-On: The OLED iPad Mini is Almost an iPad Pro Mini
Hands-On: The OLED iPad Mini is Almost an iPad Pro Mini
16 hours ago
tvOS 27.2.1 and macOS 27.2.1 Likely Coming Soon
tvOS 27.2.1 and macOS 27.2.1 Likely Coming Soon
16 hours ago