UptimeRobot is a web-based monitoring service that helps users keep track of their websites and online services. It checks the availability of a website at regular intervals, typically every five minutes, and alerts users if the site goes down. This ensures that website owners can quickly address any issues that may affect their online presence. The platform offers various monitoring options, including HTTP(s), ping, and port monitoring. Users can receive notifications via email, SMS, or third-party services like Slack and Discord. With its user-friendly interface, UptimeRobot is suitable for both individuals and businesses looking to maintain their online reliability.