Mermaid is a JavaScript-based diagramming tool that generates diagrams and charts from Markdown-like text definitions. It simplifies the creation of complex diagrams, making it accessible even to non-programmers through its Live Editor. Mermaid supports a wide range of diagram types, including flowcharts, sequence diagrams, Gantt charts, class diagrams, state diagrams, pie charts, and more. It integrates seamlessly with platforms like GitHub and can be embedded in various applications. Designed to keep documentation up-to-date with development, Mermaid reduces the time and effort required to maintain accurate diagrams. Its text-based syntax allows for easy modifications, and it offers features like sandboxed rendering for enhanced security. Mermaid is open-source, community-driven, and widely used for visualizing processes, systems, and data.