Twitter is trying to improve its interface, but analysts said the challenge was to do that before more users and advertisers defect to Facebook and Google. Twitter said on Tuesday monthly active users ticked up to 310 million in the March quarter, but revenue fell short of expectations. Facebook has about 1.6 billion users.

In the past 12 months, the company's market value has declined by more than $26 billion.

Analysts said the benefits from the improvements that Twitter had made to its services might come not come in soon enough.

The company's stock has lost about two-thirds of its value over the past year, but is still much more expensive than most of its peers.

Twitter has improved the way tweets appear even when a user is not logged in and tweaked timelines so that some tweets are prioritized over others.

It has also signed a content streaming deal with the National Football League that could help the social media site expand its user base.

Twitter said on Tuesday its users were spending more time watching and sharing video, but added that advertisers' budgets had not yet shifted from legacy advertising products such as promoted tweets.