A casino online is a website or app that allows players to place wagers on casino games like blackjack, roulette and video poker over the internet. Most of these sites offer a range of bonuses and promotions to entice new players and retain existing ones. They also support responsible gambling through tools such as time limits and deposit amounts that players can set to limit their losses.

The legitimacy of an online casino can be determined by its licensing and compliance. Regulatory bodies like Gibraltar, the UK, Malta and the Isle Of Man regulate the operation of casinos online to ensure that their operations are safe for players. These regulators have set minimum standards that a casino should meet to be considered legitimate. Several online casinos display various seals of legitimacy from these agencies along with audited payout certifications.

Another factor to consider when choosing an online casino is its customer service. A casino that provides prompt, professional customer service is likely to be a trustworthy and legitimate one. It should also provide a variety of ways to contact their support team, including email, phone and live chat.

Casinos that cater to players around the world should accept a number of different currencies and payment methods. They should use encryption software to keep players’ financial information private. They should also be licensed and regulated by state authorities to guarantee player safety. Most reputable casinos also offer responsible gambling tools, which can help players control their spending habits by setting deposit limits and time restrictions.