Safari Technology Preview 13 14
  • Safari Technology Preview. Safari Technology Preview was first released alongside OS X El Capitan 10.11.4. Safari Technology Preview releases include the latest version of WebKit, incorporating Web technologies to be incorporated in future stable releases of Safari, so that developers and users can install the Technology Preview release on a.
  • Safari Technology Preview is a standalone app that works side-by-side with the current version of Safari, so you can continue to use and reference the current release. Surf seamlessly with iCloud. Safari Technology Preview works with iCloud, so you can access your latest Safari.

The latest, Preview 109, includes 'new Safari and WebKit features that will be present in Safari 14.' The developer preview can be run side-by-side with the stable, release-format Safari in macOS.

Apple on Thursday released Safari Technology Preview 109, the latest version of their developer preview web browser. The preview version of Apple’s popular browser offers developers and other interested users the ability to try out features that may or may not, debut in future public release versions of Safari.

The new Preview release is the first version built on the new Safari 14 update included in macOS Big Sur.

Release 109

Safari Technology Preview Release 109 is now available for download for macOS Catalina. With this release, Safari Technology Preview is now available for betas of macOS Big Sur. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. Safari Technology Preview is currently only available for Intel-based Macs.

This release includes new Safari and WebKit features that will be present in Safari 14. The following Safari 14 features are new in Safari Technology Preview 109:

Safari Web Extensions. Extensions written for Chrome, Firefox, and Edge that use the WebExtension APIs can be converted to Safari Web Extensions using Xcode 12.

Privacy Report. See the trackers that Intelligent Tracking Prevention prevented from accessing identifying information.

Improved tab management with tab previews. Tabs feature a new space-efficient design that lets you view more tabs on-screen and preview tabs to find the one you’re looking for.

Website icons in tabs. Icons in tabs are turned on by default in Safari 14.

Password breach notifications. On macOS Big Sur, Safari will notify users when one of their saved passwords in iCloud Keychain has shown up in a data breach; requesting a password change uses the well-known URL for changing passwords (https://example.com/.well-known/change-password), enabling websites to specify the page to open for updating a password.

Domain-bound codes. On macOS Big Sur, added support to Security Code AutoFill for domain-bound, one-time codes sent over SMS; in the following 2FA SMS, Safari only offers to fill the code on example.com, and no other domain.

Web Authentication. Added a Web Authentication platform authenticator using Touch ID, if that capability is present (macOS Big Sur-only). Added support for PIN entry and account selection on external FIDO2 security keys.

Adobe Flash is no longer supported in Safari.

In addition to these new Safari 14 features, this release covers WebKit revisions 262502-263214 and Password Manager Resources version 10e3fca9.

Web API

  • Changed the file picker of the <input> file element to show the selection filter
  • Changed to disallow XHR+Fetch responses when a response contains invalid header values
  • Changed image referrerpolicy mutations to be considered “relevant mutations”
  • Fixed empty dataTransfer.types when handling the dragstart event
  • Fixed a case of being unable to select an item from dropdown
  • Made ReadableStream robust against user code

CSS

  • Fixed align-content to apply for a single line
  • Fixed pseudo-elements (::after) in shadow roots to animate
  • Fixed CSS custom properties for specific border properties

Web Animations

  • Fixed animating font-size values with em units

SVG

  • Fixed Document.currentScript to work for SVGScriptElements
  • Fixed multiple SVG filters unexpectedly lightening the image using linearRGB

IndexedDB

  • Added support for IDBFactory databases method
Safari technology preview 13 14 inch

Scrolling

  • Fixed horizontally scrolling elements that are broken when revealed by toggling visibility

Layout

  • Changed to not apply the special anchor handling when the anchor content is visible after clamping
  • Fixed inserted text placeholder to vertically align to top and behave like a block-level element when it has 0 width

Media

  • Fixed a YouTube video that gets stuck after rapidly tapping on touchbar’s picture-in-picture button
  • Added a quirk to allow starting AudioContext if document was interacted

WebRTC

  • Improved SCTP cookie generation

Back-forward Cache

  • Stopped allowing pages served over HTTPS with Cache-Control: no-store into the back-forward cache

JavaScript

  • Added support for private class fields
  • Added “el” (Greek) to our maintained available locales list
  • Changed Logical Assignment to perform NamedEvaluation of anonymous functions
  • Changed JSON.stringify to throw stack overflow error
  • Changed RegExp.prototype getters to throw on cross-realm access
  • Changed super to not depend on proto
  • Fixed AsyncGenerator to await return completions
  • Made errors an own property of AggregateError instead of a prototype accessor

Editing

  • Fixed text form controls to prevent scrolling by a pixel when the value is the same length as the size
  • Fixed observing a newly displayed element inside previously observed content
  • Fixed text manipulation to exclude characters outside of the unicode private use area
  • Fixed editing to handle nested item boundary elements
  • Fixed to not re-extract elements whose children have been manipulated
  • Fixed first and last unit in a paragraph to not contain only excluded tokens
Safari

Accessibility

  • Changed <address> element to no longer map to ARIA contentinfo role

Apple Pay

  • Added new values for -apple-pay-button-type

Web Inspector

  • Changed text inputs to not spellcheck or autocomplete
  • Fixed an issue where XHRs with the same URL as the main resource were not shown in the Sources Tab
  • Improved the performance of resizing the Scope Chain panel in the details sidebar of the Sources Tab

Web Driver

  • Fixed Automation.computeElementLayout to return iframe-relative element rects when the coordinate system is “Page”
  • Fixed WebDriver on non-iOS ports that cannot perform ActionChain which has scrolling down to the element and click it

The update can be downloaded from the Safari Technology Preview website, or if the browser is already installed, it can be updated via the “Update” tab in the Mac App Store. Full release notes for the update are also available on the Safari Technology Preview website.

While the preview is intended for use by developers and advanced users, in order to provide Apple with feedback on the development of the Safari browser, it can be run side-by-side with the release version of Safari. The app doesn’t require a developer account to download and install. For more information, visit the Safari Technology Preview website.


Starting today, there’s a new, convenient way to see what features and improvements are coming to Safari and other applications that use WebKit. Safari Technology Preview is a version of Safari for OS X, distributed by Apple, that includes a cutting-edge, in-development version of the WebKit browser engine. It’s a great way to test upcoming WebKit features and give feedback to the people building them when it’s most useful — early in development.

Safari Technology Preview is a standalone application that can be used side-by-side with Safari or other web browsers, making it easy to compare behaviors between them. Besides having the latest web features and bug fixes from WebKit, Safari Technology Preview includes the latest improvements to Web Inspector, which you can use to develop and debug your websites. Updates for Safari Technology Preview will be available every two weeks through the Updates pane of the Mac App Store.

How to Get It

You can download Safari Technology Preview from Apple’s Developer website. No account is required to download. You only need to install it once; afterward, updates will be delivered through the App Store.

Features You Can Try Today

Here are just a few areas of recent developments in WebKit that you can try in Safari Technology Preview today.

ECMAScript 6

Safari Technology Preview supports ECMAScript 6, the latest iteration of the JavaScript programming language. ES6 has many new features, including classes; lexical scoping using let, const, and class; iterators and generators; arrow functions; default parameters values; and many new built-in APIs.

B3 JavaScript JIT compiler

B3 is a new low-latency, high-throughput compiler designed from the ground up to support JavaScript and other dynamic languages. B3 delivers great performance benefits, especially on systems with fewer CPU cores.

Improved IndexedDB implementation

WebKit’s revamped IndexedDB implementation is more stable, more standards compliant, and still undergoing rapid improvement.

Shadow DOM

Safari Technology Preview

The latest version of Shadow DOM has been heavily revised based on input from web content authors and browser developers. WebKit is the first browser engine to implement this new version of the Shadow DOM spec.

Programmatic cut and copy to the clipboard

It’s now possible to programmatically copy and cut text in response to a user gesture with document.execCommand('copy') and document.execCommand('cut'). Having this ability may eliminate some websites’ last need for the Flash plug-in.

Content Security Policy Level 2

You can define a policy for your web application to mitigate content injection vulnerabilities, such as cross-site scripting (XSS). Level 2 expands on Level 1 with support for <script> and <style> hashes, nonces, and new policy directives to control which websites can embed your web content.

What about the WebKit Nightly?

You may already be familiar with the WebKit Nightly, which serves a purpose similar to that of Safari Technology Preview. For most people, we think Safari Technology Preview is a more convenient and stable way to live on recent WebKit changes. Unlike the nightlies, Safari Technology Preview supports the full set of iCloud-based Safari features, including iCloud History and iCloud Tabs. And we’ll use the time between Safari Technology Preview releases to curate and test updates to a point where we think developers will find it practical to use as their primary browser.

Safari Tech Preview

Sharing Your Feedback

We want to hear your feedback about WebKit features before Safari ships them. Your requests and experiences help the WebKit project figure out what’s most important, and the stories of your successes or struggles with features help us refine our implementations. Hearing from the community earlier will give us more perspectives to consider, with more time to act on what we’ve learned.

You can file bugs or feature requests at the WebKit bug tracker, or you can submit feedback or bugs to Apple on Apple’s bug reporting website. For other questions or feedback, feel free to reach me on Twitter at @rmondello or Jonathan Davis at @jonathandavis.

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