Trusted Types is a web browser security feature designed to prevent cross-site scripting (XSS) attacks. It works by restricting how JavaScript can create and inject dynamic HTML into web pages. Instead of allowing any string to be used as HTML, Trusted Types enforces the use of special objects for potentially dangerous operations, such as assigning to innerHTML or setting event handlers. This ensures that only content explicitly marked as safe by the application can be injected, reducing the risk of XSS vulnerabilities. Trusted Types are especially useful for large web applications and frameworks, helping developers enforce safer coding practices and comply with strict Content Security Policies (CSP).