The best online casinos have a wide selection of games, especially slots. They also feature video poker, keno, and scratch cards. Some have giant progressive slot jackpots that can reach millions of dollars. These jackpots are often publicized on a casino’s website, and the winners’ names and/or images are published to show how happy they are to win.

Before you sign up with an online casino, you should make sure it’s licensed. This will ensure that it operates legally and meets certain standards of fairness and security. The best way to verify a casino’s license is to look for it on its homepage or in its help pages. The casino should also have links to safe gambling organizations.

Choosing an online casino is a personal decision that depends on your own needs and preferences. Many newer casinos offer innovative features like a mobile app and social media integration, and they may also have higher payout percentages than older casinos. However, some new casinos are not yet established enough to have a solid reputation, so it’s important to research them carefully.

Another thing to keep in mind is that the best online casinos have professional and responsive customer support. Most of them are available around the clock and can be reached via email or live chat. The latter is an excellent option because it allows you to speak with a live representative instantly. This makes it easier to solve any problem you might have.