During a conference call with financial analysts, Page said the quarter had been a strong one and that Google has big opportunities for growth, especially in mobile advertising.

"As we transition from one screen to multiscreens, Google has enormous opportunities to innovate and drive ever higher monetization," Page said, referring to the popularity of smartphones and tablets.

To back up his claim, Page said that Google's annual run rate of mobile-related revenue is US$8 billion, mostly composed of ad sales but also containing revenue from the purchase of content, like books, movies and music, and of applications on the company's Play store.

"That's quite a business," he said.

The seed for this was planted back in 2005 when Google launched its Android mobile OS, he said, adding that there are now half-a-billion Android devices worldwide, and that 1.3 million are activated daily.