Instagram now has 550 million users, according to a report posted on The Guardian news site.
The photo-sharing app reaped the benefits from the growth of selfies and the propensity for celebrities such as Kim Kardashian to share images with a wider audience, the report said.
Launched in 2010, Instagram was bought but Facebook for $1 billion when it had 30 million users, the report said.
Quoting from Kevin Systrom, one of its founders, in an interview with Forbes Magazine, the report said: “500 million is a milestone very few companies get to”.
“This scale is not a badge on our uniform, but a signal of our ambition. If we can have a billion or a billion and a half on Instagram, we get closer to capturing every experience in the world.”
More than 80% of its half-billion users are outside the US, the company said, and that 300 million used the app every day, according to the report.
In a blogpost entitled 500 million windows to the world, Instagram announced its number of users saying: “Whether you’re an illustrator, a sneakerhead or an astronaut on the International Space Station, every photo and video you share helps bring people closer to friends and interests, broadens perspectives and inspires a sense of wonder”.
In early 2016, Instagram caused controversy by introducing a system that changed the order in which photographs were posted, the report said.