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Breakpoint Options

Get more from the Debugger tab in Web Inspector: customizing breakpoints with conditions and actions for logging and executing scripts, and creating probe expressions.

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Targeting Domains with Content Blockers

Content Blockers extensions are enjoying a tremendous success on iOS and Mac — especially domain-based blockers.

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Introducing Slot-Based Shadow DOM API

We’re pleased to announce that basic support for the new slot-based shadow DOM API is now available in the nightly builds.

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ECMAScript 6 in WebKit

In Safari 9 for OS X and iOS 9 you’ll be able to use some great ES6 features — there are even more you can try out if you run the nightly build.

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Web Inspector Keyboard Shortcuts

To help you become more efficient, Web Inspector includes keyboard shortcuts for many commonly used actions.

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Scroll Snapping with CSS Snap Points

WebKit now supports paginated scrolling through CSS Snap Points — making sophisticated paginated scrolling a snap.

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Introducing the Rendering Frames Timeline

Web Inspector includes a new tool to help locate and resolve rendering performance issues — in addition to the familiar event-based timelines.

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Styles Sidebar Refinements in Web Inspector

Learn about the various enhancements we made to Web Inspector’s Style sidebar in Safari 9 — such as text filtering and intelligent editing.

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JavaScript Type and Code Coverage Profiling

Web Inspector now has two great tools designed to make debugging JavaScript programs easier: the Code Coverage Profiler and the Type Profiler.

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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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