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Safari Technology Preview Release 117 for macOS

Safari Technology Preview Release 117 for macOS
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Apple Safari is the fastest, easiest to use web browser in the world. With its simple, elegant interface, Safari gets out of your way and lets you enjoy the web. It loads web pages faster than ever. It’s the best way to read on the web.

This Apple product works with iCloud across your Mac, iPad, iPhone, and iPod touch. And Safari takes advantage of Multi-Touch technology built into these devices. It even checks your spelling and grammar.

Apple Safari is a web browser that’s so innovative, you’ll do much more than just browse. The new advanced features in Apple Safari make it an even better place to explore the web.

Apple Safari searches even smarter so you’ll find web pages faster. It shows you all your open tabs in a great new way. Right from Apple Safari, you can tweet web pages, post them to Facebook, or share them via Mail or Messages. And with even more features, browsing is just the beginning.

  • Elegant Design. Enjoy the content you’re browsing, distraction free.
  • Innovation at Work. Apple Safari does things that no browser has ever done before.
  • High Technology. Blazing speed. Open standards. One powerful web engine.
  • Built-in Security. Browse worry free, your privacy protected, your security assured.
  • Apple Safari – 250 features available in the world’s fastest and most innovative web browser.

Unified Smart Search Field. Get everywhere from here.

Now there’s one simple field for both search terms and web addresses. When you enter a web address, Safari takes you right to the web page — and even fills in the entire URL. Safari finds what you’re looking for in a faster and smarter way. As you type in the field, Safari stays one step ahead and suggests a Top Hit — the closest match to what you’re looking for. Safari uses pages from your bookmarks and history to find a Top Hit, so you find the right web page fast. As you type, Apple Safari suggests a Top Hit — the closest match based on your bookmarks and browsing history — and popular search terms from Google, Yahoo!, Bing, or Baidu.

Tab View. A new point of view.

Tab View gives you the big picture of your browsing. Just pinch to see all your open tabs. Swipe left or right to move between them. And tap a tab to go right to the website. Multi-Touch makes Tab View a fun and natural way to browse. You can also use the View Tabs button to get to Tab View. Or choose Show All Tabs from the View menu.

iCloud Tabs. Pick up the web wherever you left off.

iCloud Tabs makes the last websites you had open on your Mac available in Apple Safari on your iPad, iPhone, and iPod touch. So you can go from one device to another without having to search for the web pages you were reading. It happens without syncing. Just click the iCloud Tabs button in the Safari toolbar to see the web pages you last viewed on any device. The URLs are encrypted for privacy. If you don’t want the web pages you view on your Mac to be visible on your other devices, you can turn on Private Browsing.

Built-in sharing. Everyone’s in on it.

Now you can share anything you come across on the web right when you come across it – without leaving Safari. Just click the Share button, then choose how you want to send it off. Share web pages using Mail or Messages. Post them on Facebook. Tweet links. And even add comments and locations. A single sign-on sets up Facebook and Twitter for Safari, so you need to log in only once. If you want to send a web page using Mail, Apple Safari gives you four options. Send it in Reader format so text appears in a clean, clutter-free format. Send the entire web page in your message. Send the web page as a PDF attachment. Or just send the link.

Improved performance. It’s power-browsing.

With improved performance in Apple Safari, web pages load faster. The Nitro JavaScript engine takes advantage of the multiple processor cores on your Mac, so you’ll notice fewer lags and pauses while you browse. Safari also uses a new approach to CSS that speeds up rendering. And with improved hardware acceleration, 2D drawing of text and graphics is faster and scrolling is smoother, even when your Mac is processing new content on a web page.

More Apple Safari Features:

  • Better Privacy. Safari takes your privacy seriously. You can turn on Do Not Track, an emerging privacy standard. Checking this Privacy pane preference sends websites you visit a request not to track you online. Safari also sends a request to websites not to track you when you use Private Browsing.
  • Offline Reading List. Safari now stores the content from web pages in your Reading List so you can catch up on your reading even when you don’t have an Internet connection. If an article in your Reading List contains multiple pages, Safari fetches the pages ahead of time so you can read the entire article offline.
  • Developer Features. Bring on the next generation of advanced, interactive web apps. Safari supports the latest edition of the JavaScript standard. With CSS filters, developers can create advanced filter and pixel effects such as blurs and gradients and vary brightness, adjust hues, invert colors, or convert elements to sepia or grayscale. The Web Audio API lets developers create and customize audio effects in interactive web applications with rich media content.
  • And Safari supports HTML5 media synchronization for web pages that require precise timing integration between multiple media elements and text. Such as captions, subtitles, descriptions, and chapters. With website notifications, developers can keep users up to date about their sites.

Safari 14 Release Notes

What’s New in Safari Technology Preview Release 117:

Web Inspector

  • Elements
    • Added the option to “Edit Breakpoint…” or “Reveal Breakpoint” in Sources Tab (r269337)
    • Extra closing parenthesis added after var in styles panel (r269201)
  • Network
    • Fixed background color of rows from previous session (r269127)
    • Truncated data URLs in the Resources sidebar and Headers panel (r269075)
  • Search
    • Prevented stealing focus from the search field when shown (r269074)
  • Sources
    • Changed the default breakpoint action to be evaluate (r269547)
  • Console
    • Exposed console command line API to breakpoint conditions and actions (r269023, r269044)
    • Fixed using Show JavaScript Console in an empty tab in Safari Technology Preview (r270060)
  • Other Changes
    • Updated styles to use CSS properties with neutral directionality (r269166)


  • Added support for discrete animations of many CSS properties (r269812, r269333, r269357, r268792, r268718, r268726)
  • Added support for animations on more pseudo-elements (such as :marker) (r269813)
  • Added support for more properties on ::marker (r269774)
  • Added parse support for aspect-ratio CSS property (r269641)
  • Made CSS font shorthands parsable within a worker (r269957)
  • Changed images as flex items to use the overridingLogicalHeight when defined to compute the logical width (r270073)
  • Changed images as flex items to use the overridingLogicalWidth when defined to compute the logical height (r270116)
  • Changed background-size to not accept negative values (r269237)
  • Fixed issues with percentage height on grid item replaced children when the grid item has a scrollbar (r269717)
  • Serialized aspect ratio with spaces around the slash (r268659)


  • Enabled static public class fields (r269922, r269939)
  • Enabled static and instance private class fields (r270066)
  • Implemented Intl.DateTimeFormat.formatRangeToParts (r269706)
  • Implemented Intl.ListFormat (r268956)
  • Aligned %TypedArray% behavior with recent spec adjustments (r269670)
  • Implemented @@species support in ArrayBuffer#slice (r269574)
  • Fixed toLocaleDateString() resolving incorrect date for some old dates (r269502)
  • Resurrected SharedArrayBuffer and Atomics behind a flag (JSC_useSharedArrayBuffer=1) (r269531)

Web Assembly

  • Added wasm atomics instructions, partially behind a flag (JSC_useSharedArrayBuffer=1) (r270208)
  • Fixed opcodes for table.grow and table.size (r269790)
  • Implemented shared WebAssembly.Memory behind a flag (JSC_useSharedArrayBuffer=1) (r269940)
  • Implemented i32 sign-extension-ops (r269929)


  • Added proper garbage collection to ResizeObserver (r268860)
  • Changed Worklet.addModule() to reject promise with an AbortError when the network load fails (r270033)
  • Changed event targets to be cleared after dispatch if the target pointed to a shadow tree (r269546)
  • Changed WebSocket constructor to not throw when the port is blocked (r269459)
  • Fixed toggling dark mode to update the scrollbar appearance in overflow: scroll elements (r269437)
  • Fixed navigator.clipboard to be exposed on *.localhost pages (r269960)
  • Fixed auto-focus of text input to not select text (r269587)
  • Fixed Canvas drawImage to not raise an IndexSizeError on empty sources (r270126)
  • Fixed getIndexedParameter indexing crash (r270160)
  • Fixed text getting clobbered when assigning to input.defaultValue (r269528)
  • Fixed <input disabled> to fire click events after dispatchEvent (r269452)
  • Fixed the space between minute and meridiem fields in time inputs being too large (r270148)
  • Fixed window.event to not be affected by nodes moving post-dispatch (r269500)
  • Improved exception messages when AudioContext.suspend() / resume() promises are rejected (r268999)
  • Promises returned by our DOM API have the caller’s global instead of the callee’s (r269227)
  • Removed unneeded whitespace between content and <br> (r268958, r269036)

Speech Recognition

  • Added audio capture for SpeechRecognition (r270158)
  • Added a default action for SpeechRecognition permission request (r269918)
  • Implemented basic permission check for SpeechRecognition (r269810)


  • Added WebRTC SFrame transform (r269830)
  • Added infrastructure for WebRTC transforms (r269764)
  • Added support for RTCPeerConnection.onicecandidateerror event (r270101)
  • Added support for RTCRtpScriptTransform (r270107)
  • Added support for VP9 Profile 2 (10-bit color) in WebRTC (r268971)
  • Increased camera failing timer to 30 seconds (r269190)


  • A video element may fail to enter picture-in-picture from fullscreen (r268816)
  • Added handling trackId changes across Initialization Segments in MSE (r269121)
  • Added addOutput() and removeOutput() utility functions to AudioSummingJunction (r268820)
  • Added skeleton implementation of Media Session API (r268735)
  • Changed to ensure WebAudio API throws exceptions with useful error messages (r268812)
  • Changed AudioBuffer channels to be neuterable and detachable (r269108)
  • Fixed an infinite loop in sample eviction when duration is NaN in MSE (r270106)
  • Fixed Web Audio continuing to play when navigating off the web page via an iframe (r268893)
  • Fixed poor resampling quality when using AudioContext sampleRate parameter (r270141, r270157)
  • Fixed AudioBuffer.getChannelData(x) to keep returning the same JavaScript wrapper for a given channel (r269081)
  • Fixed AudioContext.suspend() to not reject promise when the audio session is interrupted (r269039)
  • Fixed transparent video poster image to keep element transparent once the first frame is preloaded (r269407)
  • Fixed fetching an audio worklet module using a data URL (r270046)
  • Improved the speed of audio and video element creation up to 50x faster (r269077)

Web Animations

  • Ensured animation updates are not scheduled when there are no styles to update (r269963)
  • Fixed KeyframeEffect.pseudoElement to return a valid string when targeting ::marker or ::first-letter (r269623)
  • Fixed accelerated animations of individual transform properties to apply rotate before scale (r269527)


  • Changed programmatic scroll to stop rubberbanding (r269373, r269559)
  • Changed to update scrolling geometry immediately for programmatic scrolls (r269558)

Scroll Snap

  • Fixed scroll snap specified on :root (r269506)
  • Fixed scroll-snap on root aligning to the body margin edge, not the viewport edge (r269622)
  • Made axis in scroll-snap-type required (r268665)
  • Made scroll-margin independent of scroll snapping and applied it when scrolling to anchors (r269144)
  • Made scroll-padding independent of scroll-snap and have it affect scrollIntoView (r270023)
  • Stopped creating implicit snap points at scrollmin and scrollmax (r268856)

Private Click Measurement

  • Added persistence for pending ad clicks and attributions so they survive browser restart (
  • Changed to accept ad click data when the link opens a new window
  • Changed attribute and JSON key names according to the W3C conversation

Web Driver

  • Added handling for surrogate pairs in keyboard actions
  • Added support for a sequence of character key presses
  • Added handling HTTPS configuration for WebDriver tests
  • Fixed elements in Shadow DOM incorrectly marked as stale