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Apple Releases Safari Technology Preview 227 With Bug Fixes and Performance Improvements

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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-Updated-Feature-1.jpg

Safari Technology Preview 227 includes fixes and updates for Accessibility, Animations, CSS, Editing, Forms, HMTL, Images, JavaScript, Networking, Rendering, SVG, Storage, Tables, Web API, Web Inspector, and WebAssembly.

The current Safari Technology Preview release is compatible with machines running macOS Sequoia and macOS Tahoe, the newest version of macOS that's set to launch this later this year.

The Safari Technology Preview update is available through the Software Update mechanism in System Preferences or System Settings to anyone who has downloaded the browser from Apple’s website. Complete 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 it is designed for developers, it does not require a developer account to download and use.

Article Link: Apple Releases Safari Technology Preview 227 With Bug Fixes and Performance Improvements
 
Article Link
https://www.macrumors.com/2025/09/03/apple-releases-safari-technology-preview-227/
Gave up trying to make Safari work. As I write this on an M1 pro MBP, Chrome benches 28% faster than Safari (22.7 vs 29.2, using speedometer 3.1). It doesn't load an occasional website for whatever reason. It's sluggish.

I just stopped caring to find out how significant these alleged improvements are because frankly, Safari is eons behind Chrome. Apple has to do better.
 
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zubikov said:
Gave up trying to make Safari work. As I write this on an M1 pro MBP, Chrome benches 28% faster than Safari (22.7 vs 29.2, using speedometer 3.1). It doesn't load an occasional website for whatever reason. It's sluggish.

I just stopped caring to find out how significant these alleged improvements are because frankly, Safari is eons behind Chrome. Apple has to do better.
Click to expand...
Feels snappier to me
 
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Unregistered 4U said:
Because the site is coded for Chrome and the dev didn’t test Safari. Chrome is the new IE.
Click to expand...
Correct. And most of the websites today are optimized for Chrome like it was with IE.
So what to do? Going with Chrome to get the best browsing experience?
 
Safari Technology Preview benchmarked at 14.8 and Safari 18.6 at 13.9. Both browsers did have extensions so this is not meaningful.Google Chrome and Microsoft Edge crush Safari in terms of shear numbers. In my experience the current Safari tends to stuggle loading CNN and stalls at times while I haven't run into that on the Preview. This is all anecdotal anyway and probably meaningless.
 
(Higher is better)

Speedometer 3.1 benchmark results:
  • Apple Safari (Tahoe beta 9): 43.3
  • Apple Safari Tech. Preview 227: 52.9
  • Google Chrome v140: 51.0
  • Microsoft Edge v139: 50.2
JetStream 2 benchmark results:
  • Apple Safari (Tahoe beta 9): 591.091
  • Apple Safari Tech. Preview 227: 592.229
  • Google Chrome v140: 560.968
  • Microsoft Edge v139: 563.927
 
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