Introducing the WebKit FTL JIT
WebKit’s FTL JIT (Faster Than Light Just In Time compiler) has switched to a new backend — Bare Bones Backend (B3) replaces LLVM as the low-level optimizer in the FTL JIT. Just a decade ago, JavaScript – the programming language used to drive web page interactions – was thought to be too slow for serious application development. But thanks to continuous optimization efforts, it’s now possible to w
Improved Support for Images on High-Resolution Displays
WebKit now supports the srcset attribute on image (<img>) elements (official specification from the W3C). This allows you, the developer, to specify higher-quality images for your users who have high-resolution displays, without penalizing the users who don’t. Importantly, it also provides a graceful fallback for browsers that don’t yet support the feature. See the new feature in action. Note that
Announcing SunSpider 1.0
The popular SunSpider JavaScript benchmark suite was originally released by the WebKit team over five years ago, in December 2007. It was engineered to be a balance of real JavaScript code from the web, and to serve as a blueprint for the sorts of language-level operations that the WebKit JavaScript engine should, but was as yet unable to, optimize. And optimize we did: intriguingly, the original
CSS Canvas Drawing
Currently the set of images you can use from CSS consists of the following: Bitmap Images (PNG, GIF, JPG) SVG Images Gradients A notable missing ability when compared with explicit DOM content is programmatic drawing into CSS images. The <canvas> element represents a foreground bitmap image that can be drawn into programmatically, but – aside from inefficient hacks involving toDataURL – there hasn
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Chris Rogers is a WebKit Reviewer!
