Apple Releases Safari Technology Preview 52 With Bug Fixes and Feature Improvements - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Releases Safari Technology Preview 52 With Bug Fixes and Feature Improvements

by

safaripreviewiconApple today released a new update for Safari Technology Preview, the experimental browser Apple first introduced two years ago in March of 2016. Apple designed the Safari Technology Preview to test features that may be introduced into future release versions of Safari.

Safari Technology Preview release 52 includes bug fixes and feature improvements for Service Workers, Loading, JavaScript, CSS, Web API, Accessibility, Web Driver, Web Inspector, WebAssembly, and Media. Today's update also removes support for running legacy NPAPI plug-ins other than Adobe Flash.

The Safari Technology Preview update is available through the Software Update mechanism in the Mac App Store 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.

Top Rated Comments

chucker23n1 Avatar
111 months ago
I didn’t know that anyone actually used Safari, other than on iOS where we’re forced to against our will.
I use Safari. Chrome is ugly and uses more battery.
Score: 4 Votes (Like | Disagree)
smithrh Avatar
111 months ago
YouTube still doesn’t support the standard codec, so no.
It's much worse than that.

If you submit a 4K file to YouTube that's already H.26x, they transcode it to their format and delete the original.

It's a dick move.
Score: 4 Votes (Like | Disagree)
111 months ago
Horizontal tab management in Safari 2018 (reported since STP v1!! - not even 20 tabs - happens both left and right side with more open). Imagine using this "professionally", it saves battery though! :rolleyes:

You can use scrolling of the tabs or Tab View function.
Score: 2 Votes (Like | Disagree)
nvmls Avatar
111 months ago
Does anyone else use this as their default browser?
We use it daily intensively, a lot of feedback they just don't care to fix, we always have to end up on Chrome for professional dev use, pretty sad.

EDIT: if you are a casual user it may be ok.
Score: 2 Votes (Like | Disagree)
111 months ago
I will answer everyone's question, does it play 4K Youtube? No.
And it never will until YouTube supports it (which they won’t).
Score: 2 Votes (Like | Disagree)
cmChimera Avatar
111 months ago
Does anyone else use this as their default browser?
Score: 2 Votes (Like | Disagree)

Popular Stories

iOS 27 Next to iPhone

Here's When iOS 27 Rolls Out Today in Every Time Zone [Update: It's Out]

Sunday September 13, 2026 3:00 am PDT by
Update 10:04 a.m.: iOS 27 is rolling out now, though it may take a bit for all users to see it, so keep checking! Apple is about to release iOS 27, which will finally deliver more advanced Siri AI capabilities as well as a variety of other refinements, improvements, and new features to iPhones. It's Apple's biggest software update of the year, and Apple announced at Wednesday's iPhone event...
iOS 27 Icon iPhone

iOS 27 Available Now With These 8 New Features

Monday September 14, 2026 9:00 am PDT by
Update — 10 a.m. Pacific Time: Apple has released iOS 27. During its iPhone 18 Pro and iPhone Duo event last week, Apple announced that iOS 27 will be released widely on Monday, September 14. iOS 27 should be available around 10 a.m. Pacific Time / 1 p.m. Eastern Time today via the Settings app, under General → Software Update. Below, we have highlighted eight new features and...
deep black iphone 18 pro

Apple Says iPhone 18 Pro Max Sold in U.S. Differs in One Way

Saturday September 12, 2026 3:27 pm PDT by
As noted by Nicolas Lellouche, who writes for the French tech website Numerama, Apple has updated its tech specs pages for the iPhone 18 Pro and iPhone 18 Pro Max to clarify which models are equipped with its new C2 cellular modem and where. Apple now says the iPhone 18 Pro has a C2 modem worldwide, while the iPhone 18 Pro Max uses the chip in every country except for the U.S. According...

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors