헤더 수정기 is a free Chrome extension designed for developers who need to modify HTTP request and response headers effortlessly. This tool allows users to add or delete headers, streamlining web development tasks that require precise control over data transmission. With its straightforward interface, it caters especially to developers looking to test or debug web applications by adjusting header information quickly.

The extension falls under the category of browsers and is specifically categorized as an add-on and tool. It simplifies the process of managing headers, making it an essential utility for those working with web requests. By providing a user-friendly way to manipulate headers, 헤더 수정기 enhances the efficiency of web development and testing processes.