An online no deposit bonus is a type of promotional offer provided by online casinos to attract new players. It allows players to try out casino games without having to deposit any money. These bonuses are usually smaller in amount compared to deposit bonuses. Players can use online no deposit bonuses to test out different games and see if they enjoy the casino experience. Keep in mind that online no deposit bonuses often come with terms and conditions that must be met before any winnings can be withdrawn.