WebKit是一种用来让网页浏览器绘制网页的排版引擎。它被用于Apple Safari。其分支被用于基于Chromuim的网页浏览器，如：Opera与Google Chrome。

Webkit亦使用于Apple iOS、BlackBerry Tablet OS、Tizen及Amazon Kindle的缺省浏览器。WebKit的C++应用进程接口提供了一系列的Class以在窗口上显示网页内容，并且实现了一些浏览器的特色，如用户链接点击、管理前后页面列表及近期历史页面等等。

WebKit的HTML及JavaScript代码源自KDE的KHTML及KJS函式库的一个分支，现已由KDE、Apple、Google、Nokia、Bitstream、BlackBerry及Igalia等独立开发。OS X、Windows、GNU/Linux以及其他类Unix系统操作系统，皆支持这个专案。2013年4月3日，Google宣布它创建了WebKit中WebCore组件的分支——Blink，Blink将用于新版Google Chrome与Opera。

WebKit is a layout engine software component for rendering web pages in web browsers. It powers Apple's Safari web browser, and a fork of the project is used by Chromium-based browsers, such as Google Chrome or Opera.

WebKit also forms the basis for the experimental browser included with the Amazon Kindle e-book reader, as well as the default browser in the Apple iOS, BlackBerry Browser in OS 6 and above, and Tizen mobile operating systems. WebKit's C++ application programming interface 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.