DotMap is a free Chrome add-on designed to enhance the security of web applications by detecting exposed JavaScript source map files while you browse. This tool is specifically tailored to identify misconfigurations in Continuous Integration/Continuous Deployment (CI/CD) processes that may inadvertently leak original source code. By monitoring the web environment, DotMap provides developers and security professionals with critical insights into potential vulnerabilities, ensuring that sensitive information remains protected.

The functionality of DotMap revolves around its ability to scan and alert users about the presence of these .map files, which can reveal the underlying code structure of JavaScript applications. This capability helps in maintaining best practices for web security, allowing users to take necessary actions to mitigate risks associated with exposed source maps. As a valuable addition to any web developer's toolkit, DotMap plays a crucial role in safeguarding applications from unintended data exposure.