Apple Releases Safari Technology Preview 163 With Bug Fixes and Performance Improvements - MacRumors
Skip to Content

Apple Releases Safari Technology Preview 163 With Bug Fixes and Performance Improvements

by

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 163 includes bug fixes and performance improvements for Web Inspector, Masonry Layout, CSS Custom Properties, Media Queries, CSS, Forms, Rendering, JavaScript, WebAssembly, Gamepad API, Web API, WebGL, SVG, Scrolling, Media, Accessibility, WebDriver, Safari Web Extensions, and more.

The current ‌Safari Technology Preview‌ release is version 16.4 and is compatible with machines running macOS Ventura and macOS Monterey.

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. 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.

Tag: Safari Technology Preview

Popular Stories

iOS 26

iOS 26.4 Adds Two New Features to CarPlay

Tuesday March 24, 2026 1:55 pm PDT by
iOS 26.4 was released today, and it includes a couple of new features for CarPlay: an Ambient Music widget and support for voice-based chatbot apps. To update your iPhone 11 or newer to iOS 26.4, open the Settings app and tap on General → Software Update. CarPlay will automatically offer the new features so long as the iPhone connected to your vehicle is running iOS 26.4 or later....
Read Full Article • 25 comments
Apple Business hero

Apple Unveils 'Apple Business' All-in-One Platform

Tuesday March 24, 2026 8:53 am PDT by
Apple today announced Apple Business, a new all-in-one platform that unifies device management, productivity tools, and customer outreach features. The service is designed to be a consolidated replacement for several of Apple's existing business-focused offerings, including Apple Business Essentials, Apple Business Manager, and Apple Business Connect. It provides organizations with a single...
Read Full Article • 47 comments
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 3, AirPods Pro 2 and AirPods 4

Tuesday March 24, 2026 12:31 pm PDT by
Apple today released new firmware for the AirPods Pro 2, AirPods Pro 3, and the AirPods 4. The firmware has a version number of 8B39, up from 8B34 on the AirPods Pro 3, 8B28 on the AirPods Pro 2, and 8B21 on the AirPods 4. There is no word on what's included in the firmware, but Apple has a support document with limited notes. Most updates are limited to bug fixes and performance...
Read Full Article • 88 comments

Top Rated Comments

G
gk_brown
41 months ago
Apple used to offer Safari for Windows. Since they are (supposedly) being forced to allow other rendering engines on iOS, maybe now would be a good time for them to make Safari cross-platform again...
Score: 4 Votes (Like | Disagree)
MrNomNoms Avatar
MrNomNoms
41 months ago

Same here, 16Gb RAM and always get the low on memory or this page is using resources and asking me to close the page. Never happened before Ventura.
Many times on facebook, the page won't scroll down and I have to re-load the page.
Really infuriating
I've got 32GB on my Studio and 24GB on my MacBook Air M2 but I still receive that same message particularly when it comes to a variety of different web technology heavy websites. It has basically gotten to the point that I've moved back to Chrome. I really want Safari/Webkit to be a solid competitor to Chrome but Apple certainly make it difficult when these long standing issues are either being ignored or developers deny that they exist in the first place.
Score: 3 Votes (Like | Disagree)
S
Sheepish-Lord
41 months ago

Same, and I don't get it. It's just the web...what does Chrome *really* do that Safari doesn't? Aside from consuming incredible amounts of memory, that is...
I can take a brand new Mac out of the box, open Safari, and go to the Nike website (Apple Card 3% partner btw) and start scrolling through shoes. Eventually the images for shoes will stop loading for ones that have multiple color options so you just see a website sprinkled with pictures and blank white boxes. You have to scroll over the empty box for it to populate an image.

This is the most basic thing and Safari can’t get it right and hasn’t for a long time. However, Safari Tech Preview does for some reason. I’ve tried on Apple store computers and my own and it always fails.
Score: 3 Votes (Like | Disagree)
MrNomNoms Avatar
MrNomNoms
41 months ago

I see there's STILL no overflow menu for your Safari Extensions? Seems odd, it's been a while now since Safari's pushed using various Extensions. You'd think SOMEone working on Safari would understand this need...


I get the distinct feeling that no one uses extensions inside Apple based on how they ignore content blocking extension developers requests to address functionality holes in their MV3 implementation.
Score: 2 Votes (Like | Disagree)
Reason077 Avatar
Reason077
41 months ago
Good to know that Apple are still actually working on Safari. Sometimes I worry that they're close to throwing in the towel.
Score: 2 Votes (Like | Disagree)
AppleFan4U Avatar
AppleFan4U
41 months ago

Same, and I don't get it. It's just the web...what does Chrome *really* do that Safari doesn't? Aside from consuming incredible amounts of memory, that is...
JavaScript for one. I run into issues about once a week where Safari won't display something. Have to use Firefox or Chrome for it to run properly. I wish I could only use Safari!! It got a lot worse with my first M1. That was 4-M1's ago 🤣🙄😂
Score: 2 Votes (Like | Disagree)
Read All Comments