Display web content in windows. Implement browser features such as following user-activated links, managing a back-forward list, and managing a history of recently visited pages.


WebKit provides a set of classes to display web content in windows, and implements browser features such as following links when clicked by the user, managing a back-forward list, and managing a history of pages recently visited. WebKit greatly simplifies the complicated process of loading webpages—that is, asynchronously requesting web content from an HTTP server where the response may arrive incrementally, in random order, or partially due to network errors. WebKit also simplifies the process of displaying that content which can contain various MIME types, and compound frame elements each with their own set of scroll bars.



protocol WKNavigationDelegate

The methods of the WKNavigationDelegate protocol help you implement custom behaviors that are triggered during a web view's process of accepting, loading, and completing a navigation request.

class WKProcessPool

A WKProcessPool object represents a pool of Web Content processes.

class WKWindowFeatures

A WKWindowFeatures object specifies optional attributes for the containing window when a new web view is requested.

class WKWebView

A WKWebView object displays interactive web content, such as for an in-app browser. You can use the WKWebView class to embed web content in your app. To do so, create a WKWebView object, set it as the view, and send it a request to load web content.

class WKWebViewConfiguration

A collection of properties used to initialize a web view.

class WKPreferences

A WKPreferences object encapsulates the preference settings for a web view.

protocol WKUIDelegate

The WKUIDelegate class provides methods for presenting native user interface elements on behalf of a webpage.


class WKNavigation

A WKNavigation object contains information for tracking the loading progress of a webpage.

class WKNavigationAction

A WKNavigationAction object contains information about an action that may cause a navigation, used for making policy decisions.

class WKNavigationResponse

A WKNavigationResponse object contains information about a navigation response, used for making policy decisions.

Back-Forward List

class WKBackForwardList

A WKBackForwardList object maintains a list of visited pages used to go back and forward to the most recent page.

class WKBackForwardListItem

A WKBackForwardListItem object represents a webpage in the back-forward list of a web view.

Element and Frame Information

class WKFrameInfo

A WKFrameInfo object contains information about a frame on a webpage.

Website Data

class WKWebsiteDataRecord

A WKWebsiteDataRecord object represents website data grouped by the originating URL’s domain name and suffix.

class WKWebsiteDataStore

A WKWebsiteDataStore object represents various types of data used by a chosen website. Data types include cookies, disk and memory caches, and persistent data such as WebSQL, IndexedDB databases, and local storage.

File Loading

class WKOpenPanelParameters

A WKOpenPanelParameters object contains the parameters that a file upload control has specified.


class WKUserContentController

A WKUserContentController object provides a way for JavaScript to post messages and inject user scripts to a web view.

class WKScriptMessage

A WKScriptMessage object contains information about a message sent from a webpage.

class WKUserScript

A WKUserScript object represents a script that can be injected into a webpage.

protocol WKScriptMessageHandler

A class conforming to the WKScriptMessageHandler protocol provides a method for receiving messages from JavaScript running in a webpage.

URL Scheme Handling

protocol WKURLSchemeHandler

A protocol for loading resources with URL schemes that WebKit doesn't know how to handle.

protocol WKURLSchemeTask

A task created to load a resource.


First-party webpages

class WKSecurityOrigin

A WKSecurityOrigin object consists of a host name, a protocol, and a port number. A first-party load is any load URL has the same security origin as the requesting web site. First-party webpages can access each other’s resources such as scripts and databases.


class WKPreviewElementInfo

The WKPreviewElement object contains information for previewing a webpage.

protocol WKPreviewActionItem

The WKPreviewActionItem protocol provides access to the properties of a Preview action item.


WebKit Enumerations

WebKit enumerations affecting multiple classes.

WebKit Data Types

WebKit data types affecting multiple classes.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

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