Developer.mozilla.org

MDN Web Docs is your go-to site for comprehensive and up-to-date information on web technologies such as HTML, CSS, and JavaScript. It helps you learn, reference, and use these technologies effectively whether you're a beginner or an experienced developer. You can find detailed guides, API documentation, and compatibility data all in one place.

The site also supports community collaboration and real-time assistance, making it easy to get help and share knowledge with fellow developers. MDN includes interactive tools to test and write code, helping you practice and implement what you’ve learned. It’s designed to be friendly and accessible for all skill levels, whether you’re building simple websites or complex progressive web apps.

With browser compatibility updates, accessibility guidance, and extensive learning resources, MDN Web Docs is a practical, user-focused platform that empowers you to build modern web experiences confidently.