iPhones and iPads now account for more web traffic than Macs, according to a study by ad network Chitika.

Chitika measured the percentage of its ad impressions that were delivered to iOS devices and the percentage going to OS X devices. According to the firm, iOS has been steadily gaining ground since August, 2011, while OS X has lost 25 percent of its market share since September.

As of February, 2011, the iOS market share surpassed OS X for the first time, with both notching approximately 8 percent of overall web page views.

It’s worth noting that this study applies only to web pages within Chitika’s network, but the company says that the data set includes hundreds of millions of ad impressions. Because the web-based data applies to devices that people are actually using, not what they’re buying, it’s an interesting correlation to sales-based data. In the first quarter of 2012, for instance, Apple sold 37.04 million iPhones, 15.43 million iPads, and just 5.2 million Macs.

It’s not quite the death of the desktop, but mobile devices are gaining ground on their traditional brethren, at least within the Apple-centric world.

Still, Apple CEO Tim Cook is unlikely to be worried about one of his products losing market share to another, as Ars Technica’s Jacqui Cheng noted.

“There is cannibalization, clearly, of the Mac by the iPad, but we continue to believe that there’s much more cannibalization of Windows PCs by the iPad,” Cook said on Apple’s most recent quarterly earnings call, “and there’s much more left to cannibalize.”

Hat tip: BGR

Chart courtesy Chitika.

Filed under: mobile