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.
Fixed an issue that could lead to large memory use in the Safari Technology Preview and web content processes when certain Safari Extensions are installed
Fixed for-in optimization static analysis in the bytecode generator
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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 11.0: (12604.1.25.0.2, Release 33):
Performance:
Fixed an issue that could lead to large memory use in the Safari Technology Preview and web content processes when certain Safari Extensions are installed
Fixed for-in optimization static analysis in the bytecode generator
Improved performance of String.prototype.concat
Improved the bytecode and type information provided for toLength
Optimized Map and Set constructors
Added WebRTC stats logging
Fixed getUserMedia prompting too often
Prevented getUserMedia requests from background tabs unless the tab is already capturing
Prevented getUserMedia from prompting again if the user denied access
Enabled clients to specify a list of codecs that should require hardware decode support
Exempted exclusively wall-powered devices from client-required hardware codec support
Aligned Web Audio implementation to specifications when clients pass a value of 0 for bufferSize to the createScriptProcessor() method
Added support for orthogonally positioned grid items
Fixed the behavior of positioned items without specific dimensions
Fixed the logical margin applied in the tracks sizing algorithm of auto tracks
Fixed margin applied when stretching an orthogonal item in a fixed size track
Aligned
and
limits with the latest HTML specification
Fixed null content-type and content-length when fetching Blob URLs with XHR
Fixed getComputedStyle() to return pixel values for left, right, top, and bottom, matching the specifications
Implemented fromFloat32Array, fromFloat64Array, toFloat32Array, and toFloat64Array for DOMMatrix
Implemented DOMPointReadOnly.matrixTransform()
Enabled script modules to be imported via data URLs
Updated to slightly stricter rules for custom element names from the recent draft standards
Used the parent box style to adjust RenderStyle for alignment
Added conditional support for media preloading and aligned media as values
Aligned preload implementation to specifications with mandatory as value and other alignments
Changed behavior to remove backing store for layers that are outside the viewport
Fixed an issue where a frame’s composited content is visible when the frame has visibility:hidden
Changed behavior to destroy the associated renderer subtree when display:contents node is deleted
Added contextual menu item to log a WebSocket object to the console
Added Debug view to the Settings tab for debug settings and experimental features
Added the ability for the user to choose stylesheet when creating new rules
Changed the Node Details Sidebar to allow editable key and values in the Attributes table
Prevented unnecessary layout triggered when a Sidebar is resized while collapsed
Fixed performing search on reload for an existing query in the Search tab
Fixed images dragged from Web Inspector to Desktop being named "Unknown.png"
Fixed an issue where reloading the page after switching from the Resource tab switches back
Fixed the CodeMirror instance in the ConsolePrompt
getting refreshed each time it is shown
Fixed showing active Web Sockets when opening Web Inspector
Fixed an issue preventing the go-to arrow to inspect Web Sockets that receive >50 messages per second
Improved the reliability of automatically pausing in auto-attach when inspecting a JSContext
Enabled AirPoded performance of proved the bytecode and type informatMedia requests frupport Aligned Web Aal margin applied ior media preloading aisible when the frame hasiWeb Sockets that rececting a JSContext
Bug fixes:
Enabled AirPods to work with Netflix
Fixed stuttering audio in YouTube when the page changes visibility
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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