Highcharts is a popular JavaScript library used for creating interactive charts and graphs on websites. It allows developers to visualize data in various formats, such as line, bar, and pie charts, making it easier for users to understand complex information. Highcharts is known for its flexibility and ease of use, enabling quick integration into web applications. The library is compatible with all modern web browsers and can be used with various frameworks like React, Angular, and Vue. Highcharts also offers extensive documentation and a supportive community, making it accessible for both beginners and experienced developers looking to enhance their data presentation.