HeaderSentry is a Chrome add-on designed to enhance web security by checking HTTP security headers on websites. This free tool allows users to easily identify missing or present security headers, which are crucial for protecting against various online threats. With its straightforward interface, users can quickly analyze the security posture of any website they visit.

The add-on focuses on providing detailed insights into security headers, helping users understand which protections are in place and what might be lacking. By utilizing HeaderSentry, web developers and security-conscious users can ensure that their websites are properly configured to mitigate risks associated with insecure headers. This tool is essential for anyone looking to improve their online safety.