More than two billion people - more than a quarter of the world's population - log into the site every month, a powerful draw for advertisers.

The firm said revenues hit $9.3bn (£7.09bn) over the April to June period, jumping 45% year-on-year.

Profits climbed 71% to $3.9bn.

"We had a good second quarter and first half of the year," said chief executive Mark Zuckerberg, who founded Facebook in 2004.

Facebook has been adding more advertising as well as more consumers, as it explores how to monetise its other social networking platforms, Instagram and WhatsApp.

The company said that Instagram was making an increasing contribution to growth, but that the news feed at the heart of Facebook remained the biggest driver.

It was still early days for advertising on Facebook's messenger service, said Mr Zuckerberg, but he told an investor call he was "confident we're going to get this right in the long term".

Chief Operating Officer Sheryl Sandberg said brands were experimenting with different advertising formats within Facebook's platforms, for example Tropicana had found that six-second ads gave better results than longer versions, she said.

Stories

Facebook faces competition from Snapchat, a platform particularly popular amongst young social media users, which pioneered the idea of "stories", a series of messages aimed at a wider audience that lasts for 24 hours.

Instagram and WhatsApp are now offering similar features.

Facebook shares, which have risen steadily this year, bounced 3.6% in after-hours trade.

The company said mobile ads represented 87% of its advertising revenue of $9.16bn, up from 84% a year ago.

The firm now employs more than 20,600 people, up 43% year-on-year.

The firm said the number of monthly active users at the end of June - 2.01 billion - was 17% higher than a year ago and two thirds of those logged onto the site daily.