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 151

Release Notes for Safari Technology Preview 151

Safari Technology Preview Release 151 is now available for download for macOS Monterey 12.3 or later and macOS Ventura beta.

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Speedometer 2.1

Speedometer 2.1

We are announcing an update to the Speedometer benchmark.

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Understanding Garbage Collection in JavaScriptCore From Scratch

Understanding Garbage Collection in JavaScriptCore From Scratch

JavaScript relies on garbage collection (GC) to reclaim memory.

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New WebKit Features in Safari 15.6

New WebKit Features in Safari 15.6

Safari 15.6 is the seventh major release of Safari since last fall’s Safari 15.0.

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Meet Web Push

Meet Web Push

Websites have many reasons to notify their users of time-sensitive or high-priority events, even if the user does not currently have the site open.

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