Twitter is finding ways to advertise to people who view tweets on its website without having an account. The company is testing a feature to show advertising to people who checked Twitter without logging in, to cash in on an additional half a billion people each month.

Currently, advertisers on Twitter are able to target only the users who are logged in.

Twitter's move is aimed at targeting promoted tweets and videos at people who read tweets without having a Twitter account, or who aren't signed in at the time.

Promoted tweets are ads that appear intermittently throughout users' timelines when they're logged in.

The promoted tweets and videos will be available on the desktop version of the website on profile pages and "tweet detail" pages.

The company is testing the feature with certain advertisers in the United States, UK, Japan and Australia and plans to roll it out to more markets around the world.

On Wednesday, the Twitter also said it was testing a feature where tweets would be sorted by relevance instead of reverse chronological order.