Safari Technology Preview contains the most recent additions and improvements to WebKit and the latest advances in Safari web technologies. And once installed, you will receive notifications of updates from the Mac App Store.
Features
Shared Links Extensibility. Use the new Shared Links API extension to add link suggestions to the shared links feed on Safari for OS X and iOS.
Content Blocking API for Safari extensions. Easily block content from a large collection of webpage resources with minimal overhead and incredibly high performance.
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Safari Technology Preview contains the most recent additions and improvements to WebKit and the latest advances in Safari web technologies. And once installed, you will receive notifications of updates from the Mac App Store.
Features
Shared Links Extensibility. Use the new Shared Links API extension to add link suggestions to the shared links feed on Safari for OS X and iOS.
Content Blocking API for Safari extensions. Easily block content from a large collection of webpage resources with minimal overhead and incredibly high performance.
Force Touch Trackpad Mouse Events. Create interactivity like never before using new events and force information from the Force Touch Trackpad.
CSS Scroll Snapping. Use CSS scroll snapping to keep the focal point of your content in view when scrolling momentum stops.
FairPlay Streaming. Stream premium web video content securely with FairPlay Streaming support in Safari on OS X.
AirPlay for HTML5 Video. If you use custom controls for your HTML5 media, use JavaScript AirPlay support to add your own control to stream video to Apple TV.
HTML5 Video PiP. Use new JavaScript PiP support for iOS to add your own Picture in Picture control to custom controls for HTML5 videos.
Backdrop Filters. Add advanced image filters to the backdrop of your elements to achieve modern iOS and OS X material effects in your web content layouts.
Version 11.1: (12605.1.2, Release 37):
Note: Now requires macOS 10.12.5 or later.
Web API
Added initial support for navigator.sendBeacon behind an experimental feature flag
Implemented document.elementsFromPoint
Made cross-origin properties enumerable
Fixed dispatching the click event to the parent when the child target stops hit testing after mouseDown
Moved DOMException properties to the prototype and changed to use Error.prototype.toString()
JavaScript
Added finally method support to Promise
Added support for optional catch binding
WebAssembly
Reduced the size of generated binaries
Apple Pay
Added "carteBancaire" as a supported payment network
CSS
Aligned quirky number parsing with other browsers
Web Inspector
Added a context menu item to the Elements tab for taking a screenshot of a node
The debugger now captures async stack traces when web content calls addEventListener
Prevented outputting "No message" for multi-value logs like console.log(x, y)
Fixed warnings about console.assert lines without semicolons
Inlined multiple console log values if they are simple
Fixed inspect(aFunction) to jump to the function definition
Fixed the page overlay highlight to fade out when a page is constantly updating
Fixed some controls overlaying the header in the Settings tab
WebDriver
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Fixed an issue where implicit navigations didn’t cause a browsing context switch
Fixed link and partial link queries if the text link contains trailing or leading whitespaces
Fixed an issue that caused some script evaluations to be attributed to the wrong frame
Rendering
Changed to disable async image decoding for large images after the first time a tile is painted
Fixed the minimum font size preference to affect absolute line-height values and prevent text lines from overlapping
Fixed getting round-trip stroke-width styles causing text to gain a stroke
Fixed Reeder’s default font to correctly use San Francisco
Accessibility
Fixed zoom to follow the keyboard insertion point
Added a background color for the focus state of the icon buttons in the media controls
Fixed the incorrect range from index and length on p tags with contenteditable
Changed to dispatch accessibilityPerformPressAction asynchronously on macOS
Fixed silent VoiceOver or skipping over time values on the media player
Fixed the web page getting reloaded when a node is labelling multiple child nodes
Media
Fixed media controls missing content in fullscreen when the document has a scroll offset
Fixed the mouse pointer not hiding during fullscreen playback
Fixed pressing the Escape key to not be a valid user gesture to enter fullscreen
Unlike what users with a serious Apple hangup (Helmo Hass) who misuse the Discussions page, I have found nothing wrong with the Safari Technology Preview application. It's significantly quicker than regular Safari, imports bookmarks just fine, and has the access to the Keychain as well.
Like most things from Apple, it just works.
That being said, I have only been using it for a little while, and it works great.
icon. Plus, keep all your apps updated.
Safari Technology Preview User Discussion
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