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Thursday, 29 April, 2021 UTC
New WebKit Features in Safari 14.1
Safari 14.1 for macOS Big Sur, iPadOS 14.5, and iOS 14.5 brings new WebKit features, APIs, performance improvements, and improved compatibility for web developers. Take a look. Flexbox Gap Support Safari 14.1 now supports the gap property inside Flexbox ... moreWednesday, 31 March, 2021 UTC
Release Notes for Safari Technology Preview 123
Note: The original end revision for this release was incorrect. These release notes have been updated for the set of changes included in the corrected revision range. Safari Technology Preview Release 123 is now available for download for macOS Big Sur ... moreThursday, 11 March, 2021 UTC
Release Notes for Safari Technology Preview 122
Safari Technology Preview Release 122 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreFriday, 26 February, 2021 UTC
Release Notes for Safari Technology Preview 121
Safari Technology Preview Release 121 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreWednesday, 10 February, 2021 UTC
Release Notes for Safari Technology Preview 120
Safari Technology Preview Release 120 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreMonday, 1 February, 2021 UTC
Introducing Private Click Measurement, PCM
This blog post covers a new feature called Private Click Measurement, or PCM, for measuring ad clicks across websites and from iOS apps to websites. It is part of iOS and iPadOS 14.5 betas. Motivation and Goals Classic ad attribution on the web is done ... moreWednesday, 27 January, 2021 UTC
Release Notes for Safari Technology Preview 119
Safari Technology Preview Release 119 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreFriday, 8 January, 2021 UTC
Release Notes for Safari Technology Preview 118
Safari Technology Preview Release 118 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreThursday, 10 December, 2020 UTC
Release Notes for Safari Technology Preview 117
Safari Technology Preview Release 117 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreFriday, 20 November, 2020 UTC
Release Notes for Safari Technology Preview 116
Safari Technology Preview Release 116 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreMonday, 16 November, 2020 UTC
New WebKit Features in Safari 14
With the release of Safari 14 for macOS Big Sur, iPadOS 14, iOS 14, and watchOS 7, WebKit brings significant improvements to performance and privacy along with a host of new features for web developers. Take a look at all of the improvements WebKit is ... moreFriday, 13 November, 2020 UTC
CNAME Cloaking and Bounce Tracking Defense
This blog post covers several enhancements to Intelligent Tracking Prevention (ITP) in Safari 14 on macOS Big Sur, Catalina, and Mojave, iOS 14, and iPadOS 14 to address our latest discoveries in the industry around tracking. CNAME Cloaking Defense ITP ... moreThursday, 22 October, 2020 UTC
Release Notes for Safari Technology Preview 115
Safari Technology Preview Release 115 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreTuesday, 20 October, 2020 UTC
Meet Face ID and Touch ID for the Web
People often see passwords are the original sin of authentication on the web. Passwords can be easy to guess and vulnerable to breaches. Frequent reuse of the same password across the web makes breaches even more profitable. As passwords are made stronger ... moreThursday, 8 October, 2020 UTC
Release Notes for Safari Technology Preview 114
Safari Technology Preview Release 114 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreTuesday, 18 August, 2020 UTC
Release Notes for Safari Technology Preview 112
Safari Technology Preview Release 112 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreWednesday, 29 July, 2020 UTC
Speculation in JavaScriptCore
This post is all about speculative compilation, or just speculation for short, in the context of the JavaScriptCore virtual machine. Speculative compilation is ideal for making dynamic languages, or any language with enough dynamic features, run faster. ... moreWednesday, 29 July, 2020 UTC
Release Notes for Safari Technology Preview 111
Safari Technology Preview Release 111 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreThursday, 16 July, 2020 UTC
Release Notes for Safari Technology Preview 110
Safari Technology Preview Release 110 is now available for download for macOS Big Sur and macOS Catalina. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreFriday, 26 June, 2020 UTC
App-Bound Domains
Many applications use WKWebView as a convenient way to display websites without requiring users to leave the app, referred to as in-app browsing . Although this can provide a great user experience, the powerful features available to developers using ... moreThursday, 25 June, 2020 UTC
Release Notes for Safari Technology Preview 109 with Safari 14 Features
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 ... moreTuesday, 23 June, 2020 UTC
Async Clipboard API
Safari 13.1 adds support for the async Clipboard API. This API allows you, as web developers, to write and read data to and from the system clipboard, and offers several advantages over the current state of the art for reading and writing clipboard data ... moreThursday, 11 June, 2020 UTC
Release Notes for Safari Technology Preview 108
Safari Technology Preview Release 108 is now available for download for macOS Catalina and macOS Mojave. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreThursday, 28 May, 2020 UTC
Release Notes for Safari Technology Preview 107
Safari Technology Preview Release 106 is now available for download for macOS Catalina and macOS Mojave. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreFriday, 15 May, 2020 UTC
Release Notes for Safari Technology Preview 106
Safari Technology Preview Release 106 is now available for download for macOS Catalina and macOS Mojave. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreThursday, 23 April, 2020 UTC
Release Notes for Safari Technology Preview 105
Safari Technology Preview Release 105 is now available for download for macOS Catalina and macOS Mojave. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS. This release ... moreFriday, 10 April, 2020 UTC
A Tour of Inline Caching with Delete
If you search for any JavaScript performance advice, a very popular recommendation is to avoid the delete operator. Today, this seems to be good advice, but why should it be vastly more expensive to delete a property than to add it? The goal of my internship ... moreFriday, 10 April, 2020 UTC
Web Animations in Safari 13.1
With the release of iOS 13.4, iPadOS 13.4, and Safari 13.1 in macOS Catalina 10.15.4, web developers have a new API at their disposal: Web Animations. We have been working on this feature for well over 2 years and it’s now available to all Safari users, ... moreFriday, 3 April, 2020 UTC
New WebKit Features in Safari 13.1
This year’s spring releases of Safari 13.1 for macOS Catalina, iPadOS, iOS, and watchOS bring a tremendous number of WebKit improvements for the web across Apple’s platforms. All of this with many more updates for improved privacy, performance, and a ... moreThursday, 26 March, 2020 UTC