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Apple Releases Safari Technology Preview 38 With Beacon API Enabled by Default

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Apple today released a new update for Safari Technology Preview, the experimental browser Apple first introduced 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 38 includes fixes and improvements for Fetch API, Web Payments, CSS, Web API, Media, Apple Pay, Web Inspector, and WebDriver. Today's update also enables the Beacon API by default and implements new Beacon API features.

With Safari 11 now available to developers through the macOS High Sierra beta, Apple is providing two versions of Safari Technology Preview, one for macOS Sierra users and one for those using macOS High Sierra.

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.

Article Link: Apple Releases Safari Technology Preview 38 With Beacon API Enabled by Default
 
Article Link
https://www.macrumors.com/2017/08/23/apple-releases-safari-technology-preview-38/
vmachiel said:
Wait really?
Click to expand...

Not really. Preview 38 459/555.

Preview 38 is Safari 11.1 listed string on macOS 10.12.

Interestingly, Safari 11 beta 6 that can be downloaded for El Captian and Sierra is 455/555. The difference is no beacon enabled yet and Subresource integrity under the Security tests.

By comparison: Safari 10.2 currently for macOS 10.12 is 419/555.

WebGL 2 is currently enabled in 10.2 but going under additional testing for 11 (beta 6) and 11.1 (Preview 38)

Safari 10.2 lacks Peer to Peer 0/38 points, Scripting 0/3 for Modules.k

Outside of shoring up Forms, Peer-to-Peer Media Stream recorder and Screen Capture, Writable streams, Audio speech recognition, and possibly Device motion/orientation with WebVR, plus the Web Animations API nothing new features are untouched.

What's always ongoing will be future web standards that are yet to be flushed out like WebGPU (https://gpuweb.github.io/admin/cg-charter.html), updates to current HTML 5.x (5.2/5.3 RC) [if necessary], CSS 1/2/3 full support(https://www.w3.org/Style/CSS/) and possibly SVG 1.2/2.x/MathML, etc.

Nothing drastically is missing, unless you think having Forms support and web applications are a do or die scenario between Safari and Chrome.
 
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Interesting... this is the first time the Safari Tech Preview update hasn't shown up for me in the App Store immediately after I read the article about it here on MacRumors. Hmm. o_O

EDIT: It showed up about 3 hours later (after checking incessantly because I'm a weirdo like that... heh). Odd.
 
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Westside guy said:
I have a question for you folks who are running this preview, now that the beacon api has been enabled.

Is there an option/setting to turn that off?
Click to expand...

Normally everything is unchecked in Develop/Experimental Features, if you install it for the first time except for the Beacon API this time.
It seems there are four new features because I always check everything. Even though I don't have any clue what all that means. ;)

Screen Shot 2017-08-23 at 10.02.53 PM.png


Screen Shot 2017-08-23 at 10.10.23 PM.png

[doublepost=1503519194][/doublepost]
Hedwigg said:
Interesting... this is the first time the Safari Tech Preview update hasn't shown up for me in the App Store immediately after I read the article about it here on MacRumors. Hmm. o_O
Click to expand...

It hasn't shown up there for me too since at least the last three versions. I Just wanted to ask if anyone else experienced this.
 
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Thank you, @Erdbeertorte!

I also have to admit that, until I read this thread, I didn't realize Safari 11 was available as a beta release for El Capitan (which I've stayed on for various reasons). Version 11 offers some nice features which were only accessible in various kludgy ways, such as disabling auto-play video.
 
silvetti said:
Does Preview version support Youtube 4k already or still nothing ?
Click to expand...

Seems to work for some videos I tried now. Maybe the other ones lied about being 4K or need Flash what Safari seems only support for very old and/or long videos that are Flash only.

A few days ago I checked it with the previous version and found nothing higher than 1440p.


Screen Shot 2017-08-23 at 10.56.17 PM.png


Edit: Forgot to prove that it's really Safari.

Screen Shot 2017-08-23 at 11.05.35 PM.png
 
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Erdbeertorte said:
Normally everything is unchecked in Develop/Experimental Features, if you install it for the first time except for the Beacon API this time.
It seems there are four new features because I always check everything. Even though I don't have any clue what all that means. ;)

View attachment 714182

View attachment 714183
[doublepost=1503519194][/doublepost]

It hasn't shown up there for me too since at least the last three versions. I Just wanted to ask if anyone else experienced this.
Click to expand...

Thanks for posting that as it turned me on to why some webgl games i play recently quit working on tech preview. unchecked WebGL 2 and now they work again ;)
 
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The bug from the last preview is still there, if "Show/Exit Tab Overview" button is not in your toolbar Safari becomes unresponsive and unable to create new tabs.
 
JJW86 said:
The bug from the last preview is still there, if "Show/Exit Tab Overview" button is not in your toolbar Safari becomes unresponsive and unable to create new tabs.
Click to expand...

That button is in my tool bar and it still crashes. It's been crashing randomly. Deleting the preferences file "fixes" it for about a short while. Crash Log points to "CoreFoundation"

One crash when I went to View>Show Tab bar (one tab only)
One crash when I went into Full Screen mode
One crash... I forget what triggered it.
many crashes (using Open New Window shortcut or dock right-click)
[doublepost=1503535157][/doublepost]Crashed again. just now— Command clicking to open a link in a new background tab. CoreFoundation again.
 
@JJW86 @RGPphotog

Strange, I can't remember any crash at all and I am using the TP since version 1.

Just tried all of RGPphotog's examples and everything is working fine.

Maybe enabling all experimental features saved me. ;) Or being always on the latest Developer Beta. What version of macOS do you both have installed? And are there maybe any outdated extensions or plugins?

Two of my of my four extensions are betas, one is even a 0.1.1 version (alpha?) and I also have the latest Java 9 and Flash 27 plugin betas installed and something from Skype for Business what itself on the "Office Insider Fast" update channel.

Almost everything on my Mac is Beta or even Alpha. ;) Very strange that Safari TP never crashes.

I would even use the nightly version of the Webkit Browser if possible:

Screen Shot 2017-08-24 at 3.26.54 AM.png
:(
 
Running 10.12.6 on a 13"MBP 2015

Both Safari 11 Safari Technology Preview Betas.

To clarify, crashing does not occur every time those actions are done; it's completely random with when it will crash, and just overall completely unstable.

I'll just have to stick with the standard Safari for now. I *might* file a bug report, but that is kind of a PItA.
[doublepost=1503541124][/doublepost]Apple should be getting my crash logs automatically, anyway.
 
10.12.6, MBP 2011

Tried it with all extensions and plugins off, only time I encounter the bug is when I take the tab overview button out of the toolbar.
 
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