Explore HTTP headers for responsible web development in this GOTO Berlin 2019 conference talk. Discover how to build inclusive, secure, and performant websites by leveraging HTTP headers. Learn about encryption, upgrading HTTP requests, implementing Content Security Policy (CSP), managing third-party cookies, and optimizing data transfer. Gain insights into making the web more accessible, affordable, and user-friendly. Understand the importance of crafting thoughtful user interfaces and the role of HTTP headers in creating a better web experience. Dive into topics such as Brotli compression, data-saving techniques, and resource prioritization to enhance website performance and user satisfaction.