The parent company of Snapchat, Snap Inc, published its IPO filing on Thursday night, revealing for the first time how much money the messaging app makes.

Snapchat is beloved of teens and young adults - as well as a fair few of their parents - but as soon as its accounts became public its ability to live up to a valuation of up to $25bn (£20bn) was called into question.

Snap lost $515m last year, while its filing revealed that user growth was already slowing.

How many people use Snapchat?

At the end of 2016, Snapchat had 161 million daily users, some 60 million of which are based in the United States and 10 million in the UK.