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JavaScript slows down the Internet; WebKit to the rescue

Despite increases in CPU and broadband speeds, the 'Net stubbornly refuses to get much faster. The WebKit team behind Apple's browser Safari has found an important contributor to the Web's slowness: external JavaScripts that are part of many web sites get in the way of a browser's ability to load in parallel the different elements that make up a page. This means that browsers-and users-spend most of their time waiting for packets to flow to and from remote servers, which, even at the speed of light, takes a considerable amount of time. Addressing this issue made WebKit almost twice as fast in some cases.

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arstechnica.com
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