A fast, open source
web browser engine.

WebKit is the web browser engine used by Safari, Mail, App Store, and many other apps on macOS, iOS, and Linux. Get started contributing code, or reporting bugs.

Web developers can follow development, check feature status, download Safari Technology Preview to try out the latest web technologies, and report bugs.

Release Notes for Safari Technology Preview 87

Release Notes for Safari Technology Preview 87

Safari Technology Preview Release 87 is now available for download for macOS Mojave and the macOS Catalina beta.

Read more

WebDriver is Coming to Safari in iOS 13

WebDriver is Coming to Safari in iOS 13

As anyone who has developed a mobile-friendly site can tell you, mobile browsers and desktop browsers are different.

Read more

A New Bytecode Format for JavaScriptCore

A New Bytecode Format for JavaScriptCore

In revision r237547 we introduced a new bytecode format for JavaScriptCore (JSC).

Read more

What’s New in the Payment Request API for Apple Pay

What’s New in the Payment Request API for Apple Pay

Since announcing last April that WebKit supports the W3C Payment Request API for Apple Pay, we’ve been hard at work adding even more features to the API.

Read more

CPU Timeline in Web Inspector

CPU Timeline in Web Inspector

Web Inspector now includes a new CPU usage timeline that lets developers measure a page’s CPU usage, estimate its energy impact, and more easily investigate sources of script execution that may be contributing to poor energy utilization.

Read more