Your Web, Half a Second Sooner

Google has introduced a new version of show_ads.js to enhance the speed of web page loading by optimizing how AdSense advertisements are displayed. This updated script, used by over two million publishers, places ads within a same-origin iframe, allowing the browser to focus more efficiently on loading the rest of the web page. As a result, billions of pages load half a second faster, with the latency overhead from ads effectively eliminated, making the load times comparable to those of ad-free pages. The new implementation is a seamless replacement for the old one, requiring no changes from website owners, although it is currently only supported on Chrome, Firefox, and Internet Explorer 8. For sites that manipulate ads in ways incompatible with the new method, there is an option to revert to the old blocking behavior, but Google encourages trying the new, faster approach for improved performance.

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