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<Mastering HTML5 Prefetching ⁄ >




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Among other great features, HTML5 introduces prefetching, the art of loading pages before the user requested them. In this article, I'm going to discuss this new technique as well as showing you some ready to use examples to drastically improve your website loading time.

What is prefetching, and why it is useful

According to whatwg.org, rel=prefetch "indicates that preemptively fetching and caching the specified resource is likely to be beneficial, as it is highly likely that the user will require this resource." Search engines sometimes add to the search results page if they feel that the top result is wildly more popular than any other.
For example: using Firefox, search Google for CNN; view source; search for the keyword "prefetch".

As loading time is a very important factor of a website quality, prefetching can definitely improve the user experience by loading pages before the user actually requested them. Of course, you have to be careful (Don't prefetch your entire website!) but prefetching is definitely a feature that will make the web a better place.



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http://www.catswhocode.com/blog/mastering-html5-prefetching




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