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Apple Releases Safari Technology Preview 243 With Bug Fixes and Performance Improvements

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
‌Safari Technology Preview‌ 243 includes fixes and updates for Accessibility, Animations, CSS, Editing, Encoding, Forms, HTML, JavaScript, Media, Networking, PDF, Rendering, SVG, Scrolling, Spatial Web, UI, Web API, Web Extensions, Web Inspector, WebAssembly, WebGPU, and WebRTC.

The current ‌Safari Technology Preview‌ release is compatible with machines running macOS Sequoia and macOS Tahoe, the newest version of macOS.

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.

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Top Rated Comments

MCKLMT Avatar
4 weeks ago
Speedometer3.1 Benchmark ('https://browserbench.org/Speedometer3.1/') realized with a MacBook Pro M4 Pro on macOS Tahoe 26.5 RC (higher is better)
[LIST=1]
* Safari Technology Preview Version 243: 54.40
* Safari Version 26.5 RC: 43.61
* Chrome Version 148.0.7778.97: 41.10
* Edge Version 148.0.3967.54: 40.59
Score: 3 Votes (Like | Disagree)
MCKLMT Avatar
4 weeks ago

Works great. Zero issues. I use it a lot every day.
I don’t have any issues neither. This is my main browser.
Score: 3 Votes (Like | Disagree)
4 weeks ago

How's Safari these days?

I haven't opened the browser in well-over over six months...
Works great. Zero issues. I use it a lot every day.
Score: 3 Votes (Like | Disagree)
4 weeks ago
Hopefully they can muster the technology they need to fix the unresponsiveness of Safari introduced in iOS and macOS 26.
Score: 3 Votes (Like | Disagree)
3 weeks ago
give us vertical tabs....
Score: 1 Votes (Like | Disagree)
4 weeks ago

How's Safari these days?
Snappier.
Score: 1 Votes (Like | Disagree)

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