IPHONE EXPERIMENTAL WEBKIT FEATURES MP4
IPHONE EXPERIMENTAL WEBKIT FEATURES OFFLINE

code()Д¬ontent authors sometimes need a loaded, fully decoded image that is available immediately. These provide a rich set of behaviors for web developers to control the loading and display experience that best suits the design of their web content.ДЇind more details in the CSS Fonts Module Level 4 specification. If it isnвЂ™t there, it skips using it at all. Finally, the optional behavior will use the font if it is available in the browserвЂ™s cache. There is a fallback behavior to show an installed font for up to 3 seconds and if the desired font doesnвЂ™t load in that time, it will never be shown. Using font-display, the page author can use the swap value to immediately show an installed font until the specified web font is downloaded. WebKitвЂ™s new default behavior will show invisible text for up to 3 seconds before switching to an installed font until the desired font finishes downloading. Page authors have more control over font loading behavior using the newly support font-display descriptor. Some detailed information about this change is available in the blog post Evolution of : Gif without the GIF by Colin Bendell. Beyond the performance gains, this change also allows web content authors to use videos as a CSS background-image. This allows content authors to replace animated GIF files that are much larger than H.264 video files and require more processing power to display.

IPHONE EXPERIMENTAL WEBKIT FEATURES MP4

To address the performance impact, WebKit in Safari now supports loading H.264 encoded MP4 video with an HTML tag. Video as Image AssetsДЄnimated image formats are very popular, but they easily become large, bandwidth intensive file sizes. Read more about the improvements to the Clipboard API and Directory Upload API. Users can now upload an entire directory onto cloud storage and file sharing services such as iCloud or Dropbox. WebKit also added support for uploading directories using DataTransfer.webkitGetAsEntry() and input.webkitdirectory, allowing interoperability with other browsers. It adds support for ems, reading and writing of HTML content and custom MIME types, and fixed a number of bugs including copying & pasting images from native applications. The Clipboard API has a number of improvements focusing on a modernized implementation of the DataTransfer API. See the Beacon specification for more information. This is useful for sending diagnostics data about the web application without impacting perceived page load performance.

Beacon APIД«eacon API schedules asynchronous requests to send before the page is unloaded and completes them without a blocking request. See Introducing the Payment Request API for Apple Pay for more details.

This enables merchants to offer payment methods across multiple browsers using a standard API, greatly reducing the effort of supporting secure payments across different browsers and platforms. WebKit added support for the Payment Request API to perform Apple Pay transactions. Read the вЂњ Workers at Your SerivceвЂќ blog post for more details about the WebKit implementation fo Service Workers. WebKitвЂ™s implementation respects user privacy partitioning Service Workers by the top level document origin to help prevent cross-site tracking.

IPHONE EXPERIMENTAL WEBKIT FEATURES OFFLINE

Service Worker scripts commonly work with other complimentary APIs, such as the Cache API, also included in this release, to store fetch requests and responses that to improve network performance or provide an offline experience.

The Service Worker API enables scripts that run in the background to handle generalized processing for web pages.

Iphone experimental webkit features