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Complex CSS Selectors Inside Selectors

WebKit supports many selectors defined in the draft of CSS Selectors Level 4 — like matches(), not(), nth-child(…of…) and nth-last-child(…of…).

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Introducing Backdrop Filters

The proposed backdrop-filter property adds a feature that designers have been demanding for some time — allowing for beautiful blur effects.

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Web Inspector User Interface Changes

Web Inspector’s core functions have been divided out into their own tabs — like the tabs in Safari.

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Using the System Font in Web Content

On iOS 9 and OS X El Capitan, specifying “font-family: -apple-system” allows you to use Apple’s new system font: San Francisco.

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Announcing JetStream 1.1

JetStream 1.1 fixes bugs in two existing tests and adds a new test to replace the oldest and smallest test in the latency component.

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Web Inspector Console Improvements

We improved both the Console and Object views to make it more powerful and fun to use.

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Introduction to WebKit Content Blockers

Describing content blocking rules in a structured format ahead-of-time, rather than running extension-provided code.

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RefPtr Basics

History Many objects in WebKit are reference counted.

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Building WebKit for iOS Simulator

You can now build and run top-of-tree WebKit for iOS in the iOS Simulator — included are a summary of steps to get you up and running.

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Using ARIA 1.0 and the WebKit Accessibility Node Inspector

Most major web apps use ARIA and related techniques to improve accessibility and general usability for everyone.

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Introducing the JetStream Benchmark Suite

A new JavaScript benchmark test suite that codifies what our de facto process has been — to combine latency and throughput benchmarks.

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Speedometer:
Benchmark for Web App Responsiveness

We are pleased to announce Speedometer, a new benchmark that measures the responsiveness of web applications.

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