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.

Workers at Your Service

Workers at Your Service

The Service Worker API exposes persistent background processing capabilities to web pages.

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Speedometer 2.0:
A Benchmark for Modern Web App Responsiveness

Speedometer 2.0:
A Benchmark for Modern Web App Responsiveness

In 2014, the WebKit team at Apple released Speedometer 1.0, a benchmark for web app responsiveness.

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What Spectre and Meltdown Mean For WebKit

What Spectre and Meltdown Mean For WebKit

Security researchers have recently uncovered security issues known as Meltdown and Spectre.

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Introducing WebKit Build Archives

Introducing WebKit Build Archives

Today we’re excited to roll out some improvements to how we deliver WebKit builds.

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New WebKit Features in Safari 11

New WebKit Features in Safari 11

With the release of iOS 11 and macOS High Sierra, the new Safari brings impressive performance improvements and great new WebKit features to the web.

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