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

safaripreviewicon Apple 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.

Tag: Safari Technology Preview

Top Rated Comments

chucker23n1

112 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

112 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)

Takohashi

112 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

112 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)

csurfr

112 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

112 months ago

Does anyone else use this as their default browser?

Score: 2 Votes (Like | Disagree)

Read All Comments

Popular Stories

RIP, MacBook Ultra

Monday October 19, 2026 9:37 am PDT by Joe Rossignol

Apple today sent out invites for an experience in Los Angeles on Wednesday, October 28, and the "Pro and tell" tagline on the invitation likely means that the rumored MacBook models with touch-enabled OLED displays will stick with MacBook Pro branding instead of the once-rumored "MacBook Ultra" name. The long-rumored "iPhone Ultra" ended up being named iPhone Duo, so speculation that Apple...

• 159 comments

Here's What Apple's Apps Look Like on the iPhone Duo

Tuesday October 20, 2026 11:12 am PDT by Juli Clover

With just three days to go until the iPhone Duo is released, Apple is getting ready for the launch. Behind the scenes, the App Store now has screenshots of Apple's built-in apps running on the Duo. We've seen some apps in marketing materials, but images of the ones we haven't seen give us an idea of what it will be like using the iPhone Duo day to day. Many apps are shown in landscape...

• 115 comments

Apple Announcing New Products Next Week: 'Pro and Tell'

Monday October 19, 2026 9:05 am PDT by Juli Clover

Apple's Greg Joswiak today hinted at new product announcements coming next week, sharing a social media post that says "Can't wait to pro and tell next week." Rumors suggest Apple is planning to debut the new MacBook Pro with an OLED touchscreen display, an M6 entry-level MacBook Pro, an M6 iMac, an iPad mini with an OLED display. Can't wait to pro and tell next week....

• 125 comments

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

Top Rated Comments

Popular Stories

RIP, MacBook Ultra

Here's What Apple's Apps Look Like on the iPhone Duo

Apple Announcing New Products Next Week: 'Pro and Tell'

Next Article

Videos

Guides

Upcoming

Other Stories