* Skip to main content 
  * Skip to search 
  * Skip to select language 

[ MDN Web Docs  ](/en-US/) Open main menu

  * References  [ References ](/en-US/docs/Web)
    * [ Overview / Web Technology  Web technology reference for developers  ](/en-US/docs/Web)
    * [ HTML  Structure of content on the web  ](/en-US/docs/Web/HTML)
    * [ CSS  Code used to describe document style  ](/en-US/docs/Web/CSS)
    * [ JavaScript  General-purpose scripting language  ](/en-US/docs/Web/JavaScript)
    * [ HTTP  Protocol for transmitting web resources  ](/en-US/docs/Web/HTTP)
    * [ Web APIs  Interfaces for building web applications  ](/en-US/docs/Web/API)
    * [ Web Extensions  Developing extensions for web browsers  ](/en-US/docs/Mozilla/Add-ons/WebExtensions)
    * [ Web Technology  Web technology reference for developers  ](/en-US/docs/Web)
  * Guides  [ Guides ](/en-US/docs/Learn)
    * [ Overview / MDN Learning Area  Learn web development  ](/en-US/docs/Learn)
    * [ MDN Learning Area  Learn web development  ](/en-US/docs/Learn)
    * [ HTML  Learn to structure web content with HTML  ](/en-US/docs/Learn/HTML)
    * [ CSS  Learn to style content using CSS  ](/en-US/docs/Learn/CSS)
    * [ JavaScript  Learn to run scripts in the browser  ](/en-US/docs/Learn/JavaScript)
    * [ Accessibility  Learn to make the web accessible to all  ](/en-US/docs/Web/Accessibility)
  * Plus  [ Plus ](/en-US/plus)
    * [ Overview  A customized MDN experience  ](/en-US/plus)
    * [ AI Help (beta)  Get real-time assistance and support  ](/en-US/plus/ai-help)
    * [ Updates  All browser compatibility updates at a glance  ](/en-US/plus/updates)
    * [ Documentation  Learn how to use MDN Plus  ](/en-US/plus/docs/features/overview)
    * [ FAQ  Frequently asked questions about MDN Plus  ](/en-US/plus/docs/faq)
  * [ Curriculum  New  ](/en-US/curriculum/)
  * [ Blog ](/en-US/blog/)
  * [ Play ](/en-US/play)
  * [ AI Help  Beta  ](/en-US/plus/ai-help)

Search MDN  Clear search input  Search

Theme

  * [ Log in ](/users/fxa/login/authenticate/?next=%2Fen-US%2Fdocs%2FWeb)
  * [ Sign up for free  ](/users/fxa/login/authenticate/?next=%2Fen-US%2Fdocs%2FWeb)

  1. [ References  ](/en-US/docs/Web)

Article Actions

  * English (US) 

Filter sidebar  Clear filter input

##  In this article

  * Documentation for Web developers 
  * Web technology references 
  * Developer tools documentation 

  1. [ Accessibility ](/en-US/docs/Web/Accessibility)
  2. [ CSS: Cascading Style Sheets ](/en-US/docs/Web/CSS)
  3. [ Demos of open web technologies ](/en-US/docs/Web/Demos)
  4. [ Developer guides ](/en-US/docs/Web/Guide)
  5. [ EXSLT ](/en-US/docs/Web/EXSLT)
  6. [ Event reference ](/en-US/docs/Web/Events)
  7. [ HTML: HyperText Markup Language ](/en-US/docs/Web/HTML)
  8. [ HTTP ](/en-US/docs/Web/HTTP)
  9. [ JavaScript ](/en-US/docs/Web/JavaScript)
  10. [ MathML ](/en-US/docs/Web/MathML)
  11. [ OpenSearch description format ](/en-US/docs/Web/OpenSearch)
  12. [ Privacy on the web ](/en-US/docs/Web/Privacy)
  13. [ Progressive web apps ](/en-US/docs/Web/Progressive_web_apps)
  14. [ SVG: Scalable Vector Graphics ](/en-US/docs/Web/SVG)
  15. [ Security on the web ](/en-US/docs/Web/Security)
  16. [ Text fragments ](/en-US/docs/Web/Text_fragments)
  17. [ Tutorials ](/en-US/docs/Web/Tutorials)
  18. [ Web APIs ](/en-US/docs/Web/API)
  19. [ Web app manifests ](/en-US/docs/Web/Manifest)
  20. [ Web media technologies ](/en-US/docs/Web/Media)
  21. [ Web performance ](/en-US/docs/Web/Performance)
  22. [ WebDriver ](/en-US/docs/Web/WebDriver)
  23. [ XML: Extensible Markup Language ](/en-US/docs/Web/XML)
  24. [ XPath ](/en-US/docs/Web/XPath)
  25. [ XSLT: Extensible Stylesheet Language Transformations ](/en-US/docs/Web/XSLT)

##  In this article

  * Documentation for Web developers 
  * Web technology references 
  * Developer tools documentation 

#  Web technology for developers

The open Web presents incredible opportunities for developers. To take full
advantage